锘??xml version="1.0" encoding="utf-8" standalone="yes"?><rss version="2.0" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:trackback="http://madskills.com/public/xml/rss/module/trackback/" xmlns:wfw="http://wellformedweb.org/CommentAPI/" xmlns:slash="http://purl.org/rss/1.0/modules/slash/"><channel><title>&#x4E9A;&#x6D32;&#x4E00;&#x533A;&#x4E8C;&#x533A;&#x4E09;&#x533A;&#x65E0;&#x7801;&#x56FD;&#x4EA7;&#x2C;&#x4E9A;&#x6D32;&#x7CBE;&#x54C1;&#x5728;&#x7EBF;&#x89C6;&#x9891;&#x89C2;&#x770B;&#x2C;&#x4E45;&#x4E45;&#x4E9A;&#x6D32;&#x7CBE;&#x54C1;&#x31;&#x31;&#x70;</title><link>http://www.tkk7.com/JafeLee/category/24815.html</link><description /><language>zh-cn</language><lastBuildDate>Tue, 28 Aug 2007 01:26:20 GMT</lastBuildDate><pubDate>Tue, 28 Aug 2007 01:26:20 GMT</pubDate><ttl>60</ttl><item><title>Puzzlers with Character (1)</title><link>http://www.tkk7.com/JafeLee/archive/2007/08/26/139649.html</link><dc:creator>Jafe</dc:creator><author>Jafe</author><pubDate>Sun, 26 Aug 2007 14:53:00 GMT</pubDate><guid>http://www.tkk7.com/JafeLee/archive/2007/08/26/139649.html</guid><wfw:comment>http://www.tkk7.com/JafeLee/comments/139649.html</wfw:comment><comments>http://www.tkk7.com/JafeLee/archive/2007/08/26/139649.html#Feedback</comments><slash:comments>0</slash:comments><wfw:commentRss>http://www.tkk7.com/JafeLee/comments/commentRss/139649.html</wfw:commentRss><trackback:ping>http://www.tkk7.com/JafeLee/services/trackbacks/139649.html</trackback:ping><description><![CDATA[
		<div align="center">Puzzle 11:<br /><div align="left"><div style="border: 1px solid rgb(204, 204, 204); padding: 4px 5px 4px 4px; background-color: rgb(238, 238, 238); font-size: 13px; width: 98%;"><img id="Code_Closed_Image_224823" onclick="this.style.display='none'; Code_Closed_Text_224823.style.display='none'; Code_Open_Image_224823.style.display='inline'; Code_Open_Text_224823.style.display='inline';" src="http://www.tkk7.com/images/OutliningIndicators/ContractedBlock.gif" align="top" height="16" width="11" /><img id="Code_Open_Image_224823" style="display: none;" onclick="this.style.display='none'; Code_Open_Text_224823.style.display='none'; Code_Closed_Image_224823.style.display='inline'; Code_Closed_Text_224823.style.display='inline';" src="http://www.tkk7.com/images/OutliningIndicators/ExpandedBlockStart.gif" align="top" height="16" width="11" /><span id="Code_Closed_Text_224823" style="border: 1px solid rgb(128, 128, 128); background-color: rgb(255, 255, 255);">LastLaugh.java</span><span id="Code_Open_Text_224823" style="display: none;"><br /><!--<br><br>Code highlighting produced by Actipro CodeHighlighter (freeware)<br>http://www.CodeHighlighter.com/<br><br>--><span style="color: rgb(0, 0, 255);">public</span><span style="color: rgb(0, 0, 0);">聽</span><span style="color: rgb(0, 0, 255);">class</span><span style="color: rgb(0, 0, 0);">聽LastLaugh<br />{<br />聽聽聽聽</span><span style="color: rgb(0, 0, 255);">public</span><span style="color: rgb(0, 0, 0);">聽</span><span style="color: rgb(0, 0, 255);">static</span><span style="color: rgb(0, 0, 0);">聽</span><span style="color: rgb(0, 0, 255);">void</span><span style="color: rgb(0, 0, 0);">聽main(String聽args[])<br />聽聽聽聽{<br />聽聽聽聽聽聽聽聽System.out.print(</span><span style="color: rgb(0, 0, 0);">"</span><span style="color: rgb(0, 0, 0);">H</span><span style="color: rgb(0, 0, 0);">"</span><span style="color: rgb(0, 0, 0);">聽</span><span style="color: rgb(0, 0, 0);">+</span><span style="color: rgb(0, 0, 0);">聽</span><span style="color: rgb(0, 0, 0);">"</span><span style="color: rgb(0, 0, 0);">a</span><span style="color: rgb(0, 0, 0);">"</span><span style="color: rgb(0, 0, 0);">);聽</span><span style="color: rgb(0, 128, 0);">//</span><span style="color: rgb(0, 128, 0);">Ha</span><span style="color: rgb(0, 128, 0);"><br /></span><span style="color: rgb(0, 0, 0);">聽聽聽聽聽聽聽聽System.out.println(</span><span style="color: rgb(0, 0, 0);">'</span><span style="color: rgb(0, 0, 0);">H</span><span style="color: rgb(0, 0, 0);">'</span><span style="color: rgb(0, 0, 0);">聽</span><span style="color: rgb(0, 0, 0);">+</span><span style="color: rgb(0, 0, 0);">聽</span><span style="color: rgb(0, 0, 0);">'</span><span style="color: rgb(0, 0, 0);">a</span><span style="color: rgb(0, 0, 0);">'</span><span style="color: rgb(0, 0, 0);">);聽</span><span style="color: rgb(0, 128, 0);">//</span><span style="color: rgb(0, 128, 0);">169</span><span style="color: rgb(0, 128, 0);"><br /></span><span style="color: rgb(0, 0, 0);">聽聽聽聽}<br />}<br /></span></span></div>浣?+ 鍜宑har鍨嬪悓鏃跺嚭鐜扮殑鏃跺�欙紝鍒嗘竻榪愮畻鏄瓧絎︿覆榪炴帴榪愮畻榪樻槸綆�鍗曠殑綆楁湳榪愮畻銆?br />JSL 5.1.2銆?.6.2<br /><div align="center">Puzzle 12:<br /><div align="left"><div style="border: 1px solid rgb(204, 204, 204); padding: 4px 5px 4px 4px; background-color: rgb(238, 238, 238); font-size: 13px; width: 98%;"><img id="Code_Closed_Image_092315" onclick="this.style.display='none'; Code_Closed_Text_092315.style.display='none'; Code_Open_Image_092315.style.display='inline'; Code_Open_Text_092315.style.display='inline';" src="http://www.tkk7.com/images/OutliningIndicators/ContractedBlock.gif" align="top" height="16" width="11" /><img id="Code_Open_Image_092315" style="display: none;" onclick="this.style.display='none'; Code_Open_Text_092315.style.display='none'; Code_Closed_Image_092315.style.display='inline'; Code_Closed_Text_092315.style.display='inline';" src="http://www.tkk7.com/images/OutliningIndicators/ExpandedBlockStart.gif" align="top" height="16" width="11" /><span id="Code_Closed_Text_092315" style="border: 1px solid rgb(128, 128, 128); background-color: rgb(255, 255, 255);">Abc.java</span><span id="Code_Open_Text_092315" style="display: none;"><br /><!--<br><br>Code highlighting produced by Actipro CodeHighlighter (freeware)<br>http://www.CodeHighlighter.com/<br><br>--><span style="color: rgb(0, 0, 255);">public</span><span style="color: rgb(0, 0, 0);">聽</span><span style="color: rgb(0, 0, 255);">class</span><span style="color: rgb(0, 0, 0);">聽Abc<br />{<br />聽聽聽聽</span><span style="color: rgb(0, 0, 255);">public</span><span style="color: rgb(0, 0, 0);">聽</span><span style="color: rgb(0, 0, 255);">static</span><span style="color: rgb(0, 0, 0);">聽</span><span style="color: rgb(0, 0, 255);">void</span><span style="color: rgb(0, 0, 0);">聽main(String[]聽args)<br />聽聽聽聽{<br />聽聽聽聽聽聽聽聽String聽letters聽</span><span style="color: rgb(0, 0, 0);">=</span><span style="color: rgb(0, 0, 0);">聽</span><span style="color: rgb(0, 0, 0);">"</span><span style="color: rgb(0, 0, 0);">ABC</span><span style="color: rgb(0, 0, 0);">"</span><span style="color: rgb(0, 0, 0);">;<br />聽聽聽聽聽聽聽聽</span><span style="color: rgb(0, 0, 255);">char</span><span style="color: rgb(0, 0, 0);">[]聽numbers聽</span><span style="color: rgb(0, 0, 0);">=</span><span style="color: rgb(0, 0, 0);">聽{</span><span style="color: rgb(0, 0, 0);">'</span><span style="color: rgb(0, 0, 0);">1</span><span style="color: rgb(0, 0, 0);">'</span><span style="color: rgb(0, 0, 0);">,聽</span><span style="color: rgb(0, 0, 0);">'</span><span style="color: rgb(0, 0, 0);">2</span><span style="color: rgb(0, 0, 0);">'</span><span style="color: rgb(0, 0, 0);">,聽</span><span style="color: rgb(0, 0, 0);">'</span><span style="color: rgb(0, 0, 0);">3</span><span style="color: rgb(0, 0, 0);">'</span><span style="color: rgb(0, 0, 0);">};<br />聽聽聽聽聽聽聽聽</span><span style="color: rgb(0, 0, 255);">char</span><span style="color: rgb(0, 0, 0);">聽[]聽chars聽</span><span style="color: rgb(0, 0, 0);">=</span><span style="color: rgb(0, 0, 0);">聽{</span><span style="color: rgb(0, 0, 0);">'</span><span style="color: rgb(0, 0, 0);">a</span><span style="color: rgb(0, 0, 0);">'</span><span style="color: rgb(0, 0, 0);">,聽</span><span style="color: rgb(0, 0, 0);">'</span><span style="color: rgb(0, 0, 0);">b</span><span style="color: rgb(0, 0, 0);">'</span><span style="color: rgb(0, 0, 0);">,聽</span><span style="color: rgb(0, 0, 0);">'</span><span style="color: rgb(0, 0, 0);">c</span><span style="color: rgb(0, 0, 0);">'</span><span style="color: rgb(0, 0, 0);">};<br />聽聽聽聽聽聽聽聽System.out.println(letters聽</span><span style="color: rgb(0, 0, 0);">+</span><span style="color: rgb(0, 0, 0);">聽</span><span style="color: rgb(0, 0, 0);">"</span><span style="color: rgb(0, 0, 0);">easy聽as聽</span><span style="color: rgb(0, 0, 0);">"</span><span style="color: rgb(0, 0, 0);">聽</span><span style="color: rgb(0, 0, 0);">+</span><span style="color: rgb(0, 0, 0);">聽numbers);聽</span><span style="color: rgb(0, 128, 0);">//</span><span style="color: rgb(0, 128, 0);">聽ABCeasy聽as聽[C@de6ced</span><span style="color: rgb(0, 128, 0);"><br /></span><span style="color: rgb(0, 0, 0);">聽聽聽聽聽聽聽聽System.out.println(letters聽</span><span style="color: rgb(0, 0, 0);">+</span><span style="color: rgb(0, 0, 0);">聽</span><span style="color: rgb(0, 0, 0);">"</span><span style="color: rgb(0, 0, 0);">聽easy聽as聽</span><span style="color: rgb(0, 0, 0);">"</span><span style="color: rgb(0, 0, 0);">聽</span><span style="color: rgb(0, 0, 0);">+</span><span style="color: rgb(0, 0, 0);">聽chars);聽</span><span style="color: rgb(0, 128, 0);">//</span><span style="color: rgb(0, 128, 0);">聽ABC聽easy聽as聽[C@c17164</span><span style="color: rgb(0, 128, 0);"><br /></span><span style="color: rgb(0, 0, 0);">聽聽聽聽聽聽聽聽System.out.println(numbers);聽</span><span style="color: rgb(0, 128, 0);">//</span><span style="color: rgb(0, 128, 0);">聽123</span><span style="color: rgb(0, 128, 0);"><br /></span><span style="color: rgb(0, 0, 0);">聽聽聽聽聽聽聽聽System.out.println(chars);聽</span><span style="color: rgb(0, 128, 0);">//</span><span style="color: rgb(0, 128, 0);">聽abc</span><span style="color: rgb(0, 128, 0);"><br /></span><span style="color: rgb(0, 0, 0);">聽聽聽聽}<br />}<br /></span></span></div>鍏充簬鏁扮粍鐨勶紝鍙傝JSL 10<br /></div></div></div></div>
<img src ="http://www.tkk7.com/JafeLee/aggbug/139649.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://www.tkk7.com/JafeLee/" target="_blank">Jafe</a> 2007-08-26 22:53 <a href="http://www.tkk7.com/JafeLee/archive/2007/08/26/139649.html#Feedback" target="_blank" style="text-decoration:none;">鍙戣〃璇勮</a></div>]]></description></item><item><title>Expressive Puzzlers (2)</title><link>http://www.tkk7.com/JafeLee/archive/2007/08/23/138900.html</link><dc:creator>Jafe</dc:creator><author>Jafe</author><pubDate>Thu, 23 Aug 2007 09:56:00 GMT</pubDate><guid>http://www.tkk7.com/JafeLee/archive/2007/08/23/138900.html</guid><wfw:comment>http://www.tkk7.com/JafeLee/comments/138900.html</wfw:comment><comments>http://www.tkk7.com/JafeLee/archive/2007/08/23/138900.html#Feedback</comments><slash:comments>0</slash:comments><wfw:commentRss>http://www.tkk7.com/JafeLee/comments/commentRss/138900.html</wfw:commentRss><trackback:ping>http://www.tkk7.com/JafeLee/services/trackbacks/138900.html</trackback:ping><description><![CDATA[
		<div align="center">Puzzle 8:<br /><div align="left"><div style="border: 1px solid rgb(204, 204, 204); padding: 4px 5px 4px 4px; background-color: rgb(238, 238, 238); font-size: 13px; width: 98%;"><img id="Code_Closed_Image_183153" onclick="this.style.display='none'; Code_Closed_Text_183153.style.display='none'; Code_Open_Image_183153.style.display='inline'; Code_Open_Text_183153.style.display='inline';" src="http://www.tkk7.com/images/OutliningIndicators/ContractedBlock.gif" align="top" height="16" width="11" /><img id="Code_Open_Image_183153" style="display: none;" onclick="this.style.display='none'; Code_Open_Text_183153.style.display='none'; Code_Closed_Image_183153.style.display='inline'; Code_Closed_Text_183153.style.display='inline';" src="http://www.tkk7.com/images/OutliningIndicators/ExpandedBlockStart.gif" align="top" height="16" width="11" /><span id="Code_Closed_Text_183153" style="border: 1px solid rgb(128, 128, 128); background-color: rgb(255, 255, 255);">DosEquiz.java</span><span id="Code_Open_Text_183153" style="display: none;"><br /><!--<br><br>Code highlighting produced by Actipro CodeHighlighter (freeware)<br>http://www.CodeHighlighter.com/<br><br>--><span style="color: rgb(0, 0, 255);">public</span><span style="color: rgb(0, 0, 0);">聽</span><span style="color: rgb(0, 0, 255);">class</span><span style="color: rgb(0, 0, 0);">聽DosEquis<br />{<br />聽聽聽聽</span><span style="color: rgb(0, 0, 255);">public</span><span style="color: rgb(0, 0, 0);">聽</span><span style="color: rgb(0, 0, 255);">static</span><span style="color: rgb(0, 0, 0);">聽</span><span style="color: rgb(0, 0, 255);">void</span><span style="color: rgb(0, 0, 0);">聽main(String[]聽args)<br />聽聽聽聽{<br />聽聽聽聽聽聽聽聽</span><span style="color: rgb(0, 0, 255);">char</span><span style="color: rgb(0, 0, 0);">聽x聽</span><span style="color: rgb(0, 0, 0);">=</span><span style="color: rgb(0, 0, 0);">聽</span><span style="color: rgb(0, 0, 0);">'</span><span style="color: rgb(0, 0, 0);">X</span><span style="color: rgb(0, 0, 0);">'</span><span style="color: rgb(0, 0, 0);">;<br />聽聽聽聽聽聽聽聽</span><span style="color: rgb(0, 0, 255);">int</span><span style="color: rgb(0, 0, 0);">聽i聽</span><span style="color: rgb(0, 0, 0);">=</span><span style="color: rgb(0, 0, 0);">聽</span><span style="color: rgb(0, 0, 0);">89</span><span style="color: rgb(0, 0, 0);">;<br />聽聽聽聽聽聽聽聽</span><span style="color: rgb(0, 0, 255);">final</span><span style="color: rgb(0, 0, 0);">聽</span><span style="color: rgb(0, 0, 255);">int</span><span style="color: rgb(0, 0, 0);">聽j聽</span><span style="color: rgb(0, 0, 0);">=</span><span style="color: rgb(0, 0, 0);">聽</span><span style="color: rgb(0, 0, 0);">89</span><span style="color: rgb(0, 0, 0);">;<br />聽聽聽聽聽聽聽聽</span><span style="color: rgb(0, 0, 255);">final</span><span style="color: rgb(0, 0, 0);">聽</span><span style="color: rgb(0, 0, 255);">int</span><span style="color: rgb(0, 0, 0);">聽k聽</span><span style="color: rgb(0, 0, 0);">=</span><span style="color: rgb(0, 0, 0);">聽</span><span style="color: rgb(0, 0, 0);">6666666</span><span style="color: rgb(0, 0, 0);">;<br />聽聽聽聽聽聽聽聽System.out.println(</span><span style="color: rgb(0, 0, 255);">true</span><span style="color: rgb(0, 0, 0);">聽</span><span style="color: rgb(0, 0, 0);">?</span><span style="color: rgb(0, 0, 0);">聽x聽:聽</span><span style="color: rgb(0, 0, 0);">88</span><span style="color: rgb(0, 0, 0);">);聽聽</span><span style="color: rgb(0, 128, 0);">//</span><span style="color: rgb(0, 128, 0);">聽X</span><span style="color: rgb(0, 128, 0);"><br /></span><span style="color: rgb(0, 0, 0);">聽聽聽聽聽聽聽聽System.out.println(</span><span style="color: rgb(0, 0, 255);">false</span><span style="color: rgb(0, 0, 0);">聽</span><span style="color: rgb(0, 0, 0);">?</span><span style="color: rgb(0, 0, 0);">聽i聽:聽x);聽</span><span style="color: rgb(0, 128, 0);">//</span><span style="color: rgb(0, 128, 0);">聽88</span><span style="color: rgb(0, 128, 0);"><br /></span><span style="color: rgb(0, 0, 0);">聽聽聽聽聽聽聽聽<br />聽聽聽聽聽聽聽聽System.out.println(</span><span style="color: rgb(0, 0, 255);">true</span><span style="color: rgb(0, 0, 0);">聽</span><span style="color: rgb(0, 0, 0);">?</span><span style="color: rgb(0, 0, 0);">聽j聽:聽x);聽</span><span style="color: rgb(0, 128, 0);">//</span><span style="color: rgb(0, 128, 0);">聽Y</span><span style="color: rgb(0, 128, 0);"><br /></span><span style="color: rgb(0, 0, 0);">聽聽聽聽聽聽聽聽System.out.println(</span><span style="color: rgb(0, 0, 255);">false</span><span style="color: rgb(0, 0, 0);">聽</span><span style="color: rgb(0, 0, 0);">?</span><span style="color: rgb(0, 0, 0);">聽j聽:聽x);聽</span><span style="color: rgb(0, 128, 0);">//</span><span style="color: rgb(0, 128, 0);">聽X</span><span style="color: rgb(0, 128, 0);"><br /></span><span style="color: rgb(0, 0, 0);">聽聽聽聽聽聽聽聽System.out.println(</span><span style="color: rgb(0, 0, 255);">true</span><span style="color: rgb(0, 0, 0);">聽</span><span style="color: rgb(0, 0, 0);">?</span><span style="color: rgb(0, 0, 0);">聽k聽:聽x);聽聽</span><span style="color: rgb(0, 128, 0);">//</span><span style="color: rgb(0, 128, 0);">聽6666666</span><span style="color: rgb(0, 128, 0);"><br /></span><span style="color: rgb(0, 0, 0);">聽聽聽聽聽聽聽聽System.out.println(</span><span style="color: rgb(0, 0, 255);">false</span><span style="color: rgb(0, 0, 0);">聽</span><span style="color: rgb(0, 0, 0);">?</span><span style="color: rgb(0, 0, 0);">聽k聽:聽x);聽聽</span><span style="color: rgb(0, 128, 0);">//</span><span style="color: rgb(0, 128, 0);">聽88<br />聽聽聽聽聽聽聽聽<br />聽聽聽聽聽聽聽聽<br />聽聽聽聽聽聽聽聽</span><span style="color: rgb(0, 128, 0);">//</span><span style="color: rgb(0, 128, 0);">System.out.println((true聽?聽true聽:聽new聽Boolean(true)).booleanValue());聽\\聽a聽compile-time聽error聽<br />聽聽聽聽聽聽聽聽</span><span style="color: rgb(0, 128, 0);">//</span><span style="color: rgb(0, 128, 0);">System.out.println((true聽?聽false聽:聽new聽Boolean(true)).booleanValue());聽\\聽a聽compile-time聽error聽</span><span style="color: rgb(0, 128, 0);"><br /></span><span style="color: rgb(0, 0, 0);">聽聽聽聽聽聽聽聽System.out.println(</span><span style="color: rgb(0, 0, 255);">new</span><span style="color: rgb(0, 0, 0);">聽Boolean((</span><span style="color: rgb(0, 0, 255);">true</span><span style="color: rgb(0, 0, 0);">聽</span><span style="color: rgb(0, 0, 0);">?</span><span style="color: rgb(0, 0, 0);">聽</span><span style="color: rgb(0, 0, 255);">true</span><span style="color: rgb(0, 0, 0);">聽:聽</span><span style="color: rgb(0, 0, 255);">new</span><span style="color: rgb(0, 0, 0);">聽Boolean(</span><span style="color: rgb(0, 0, 255);">true</span><span style="color: rgb(0, 0, 0);">))).booleanValue());聽</span><span style="color: rgb(0, 128, 0);">//</span><span style="color: rgb(0, 128, 0);">ok<br />聽聽聽聽聽聽聽聽<br />聽聽聽聽聽聽聽聽</span><span style="color: rgb(0, 128, 0);">//</span><span style="color: rgb(0, 128, 0);">Double聽aInt聽=聽true聽?聽new聽I(yíng)nteger(1)聽:聽null;聽--聽a聽compile-time聽error聽<br />聽聽聽聽聽聽聽聽</span><span style="color: rgb(0, 128, 0);">//</span><span style="color: rgb(0, 128, 0);">Double聽aInt聽=聽false聽?聽new聽I(yíng)nteger(1)聽:聽null;聽--聽a聽compile-time聽error聽</span><span style="color: rgb(0, 128, 0);"><br /></span><span style="color: rgb(0, 0, 0);">聽聽聽聽聽聽聽聽<br />聽聽聽聽聽聽聽聽<br />聽聽聽聽}<br />}<br /></span></span></div><br />榪欎釜璋滈鏄叧浜?<font color="#006400"><i>Conditional Operator </i><tt><i>? :</i></tt></font>[JLS 15.25]銆?br />1銆丆onditional Operator 鏈変笁涓繍綆楃琛ㄨ揪寮忥紝絎竴涓繀欏繪槸 boolean鎴?Boolean鍨嬬殑錛屽惁鍒欏紩鍙戜竴涓猚ompile-time error 銆?br />2銆佷竴涓?Conditional Expression鐨勭被鍨婽鏄敱絎簩涓〃杈懼紡 T2鍜岀涓変釜琛ㄨ揪寮廡3鐨勭被鍨嬫潵鍐沖畾鐨勩�傚叿浣撹鍒欏涓嬶細(xì)<br /><ul><li>rule 1:聽 濡傛灉T2 == T3錛堝寘鎷琓2 == T3 == null鐨勬儏鍐碉級(jí)錛岄偅涔?T = T2錛圱3錛夈�?/li><li>rule 2:聽 濡傛灉 T2涓嶵3榪欎袱涓箣涓湁涓�涓槸boolean鍨嬶紝鍙﹀涓�涓槸Boolean鍨嬶紝閭ｄ箞 T = boolean銆?/li><li>rule 3:聽 濡傛灉T2涓嶵3涔嬩腑鏈変竴涓槸null綾誨瀷錛岃�屽彟澶栦竴涓槸涓�涓紩鐢ㄧ被鍨?reference type) RT錛岄偅涔圱 = RT</li><li>濡傛灉T2涓嶵3鏄彲浠ヨ漿鍖栨垚鏁板�肩被鍨嬬殑錛岄偅涔堢粨鏋滄湁浠ヤ笅鍑犵鎯呭喌錛?/li><ol><li>rule 4:聽 濡傛灉T2涓嶵3鏈変竴涓槸byte鎴栬�匓yte錛屽彟涓�涓槸short鎴栬�匰hort錛岄偅涔圱 = short</li><li>rule 5:聽 濡傛灉T2涓嶵3涓湁涓�涓槸 GT 鍨嬶紝榪欓噷 GT 娉涙寚byte, short, char涓殑浠諱綍涓�涓? 鑰屼笖鍙︿竴涓槸涓�涓猧nt鍨嬬殑甯擱噺琛ㄨ揪寮?娉ㄦ剰錛屽繀欏繪槸涓�涓?int鍨嬬殑constant expression)錛岃�屼笖 璇ュ父閲忚〃杈懼紡鍙互鐢℅T琛ㄧず錛堝嵆涓嶄細(xì)浜х敓綺懼害鎹熷け鐨勬儏鍐碉紝涓漢鐨勭悊瑙_^錛夛紝鍒橳=GT銆?/li><li>rule 6錛?濡傛灉T2鍜孴3鏈変竴涓槸Byte鍨嬶紝鍙︿竴涓槸鍙互鐢╞yte鍨嬭〃紺虹殑int鍨嬪父閲忚〃杈懼紡錛岄偅涔圱=byte</li><li>rule 7錛?濡傛灉T2鍜孴3鏈変竴涓槸Short鍨嬶紝鍙︿竴涓槸鍙互鐢╞yte鍨嬭〃紺虹殑int鍨嬪父閲忚〃杈懼紡錛岄偅涔圱=short</li><li>rule 8錛?濡傛灉T2鍜孴3鏈変竴涓槸Character鍨嬶紝鍙︿竴涓槸鍙互鐢╟har鍨嬭〃紺虹殑int鍨嬪父閲忚〃杈懼紡錛岄偅涔圱=char</li><li>rule 9:聽 Otherwise, binary numeric promotion (<span id="tn1znz9"    class="docLink">JLS 5.6.2</span>) is applied to the operand 
types, and the type of the conditional expression is the promoted type of the 
second and third operands. Note that binary numeric promotion performs unboxing 
conversion (JLS <span id="hfhrhjz"    class="docLink">5.1.8</span>) 
and value set conversion (JLS <span id="73hrflp"    class="docLink">5.1.13</span>).(榪欎釜寰堝璇嶈閮戒笉鐭ヨ鎬庝箞緲昏瘧錛屽氨鐩存帴copy榪囦簡(jiǎn)銆傘�傘�傦級(jí)</li></ol><li><p class="docList">rule 10:聽 Otherwise, the second and third operands are of types <span id="1dt9vrp"    class="docEmphasis">S1</span> and <span id="53xvfh3"    class="docEmphasis">S2</span> respectively. 
Let <span id="x9ld9t9"    class="docEmphasis">T1</span> be the type that results from applying 
boxing conversion to <span id="ppxrjzn"    class="docEmphasis">S1</span>, and let <span id="9l9tvvb"    class="docEmphasis">T2</span> be the type that results from applying boxing 
conversion to <span id="73np3dx"    class="docEmphasis">S2</span>. The type of the conditional 
expression is the result of applying capture conversion (JLS <span id="jdrt1xz"    class="docLink">5.1.10</span>) to <span id="p3hhjxx"    class="docEmphasis">lub(T1, T2)</span> (JLS <span id="dhhxbjp"    class="docLink">15.12.2.7</span>).</p></li></ul><br /><div align="center">Puzzle 9:<br /><div align="left"><div style="border: 1px solid rgb(204, 204, 204); padding: 4px 5px 4px 4px; background-color: rgb(238, 238, 238); font-size: 13px; width: 98%;"><img id="Code_Closed_Image_152238" onclick="this.style.display='none'; Code_Closed_Text_152238.style.display='none'; Code_Open_Image_152238.style.display='inline'; Code_Open_Text_152238.style.display='inline';" src="http://www.tkk7.com/images/OutliningIndicators/ContractedBlock.gif" align="top" height="16" width="11" /><img id="Code_Open_Image_152238" style="display: none;" onclick="this.style.display='none'; Code_Open_Text_152238.style.display='none'; Code_Closed_Image_152238.style.display='inline'; Code_Closed_Text_152238.style.display='inline';" src="http://www.tkk7.com/images/OutliningIndicators/ExpandedBlockStart.gif" align="top" height="16" width="11" /><span id="Code_Closed_Text_152238" style="border: 1px solid rgb(128, 128, 128); background-color: rgb(255, 255, 255);">Tweedledum.java</span><span id="Code_Open_Text_152238" style="display: none;"><br /><!--<br><br>Code highlighting produced by Actipro CodeHighlighter (freeware)<br>http://www.CodeHighlighter.com/<br><br>--><span style="color: rgb(0, 0, 255);">public</span><span style="color: rgb(0, 0, 0);">聽</span><span style="color: rgb(0, 0, 255);">class</span><span style="color: rgb(0, 0, 0);">聽Tweedledum<br />{<br />聽聽聽聽</span><span style="color: rgb(0, 0, 255);">public</span><span style="color: rgb(0, 0, 0);">聽</span><span style="color: rgb(0, 0, 255);">static</span><span style="color: rgb(0, 0, 0);">聽</span><span style="color: rgb(0, 0, 255);">void</span><span style="color: rgb(0, 0, 0);">聽main(String聽[]聽args)<br />聽聽聽聽{<br />聽聽聽聽聽聽聽聽</span><span style="color: rgb(0, 0, 255);">long</span><span style="color: rgb(0, 0, 0);">聽i聽</span><span style="color: rgb(0, 0, 0);">=</span><span style="color: rgb(0, 0, 0);">聽</span><span style="color: rgb(0, 0, 0);">1</span><span style="color: rgb(0, 0, 0);">;<br />聽聽聽聽聽聽聽聽</span><span style="color: rgb(0, 0, 255);">int</span><span style="color: rgb(0, 0, 0);">聽x聽</span><span style="color: rgb(0, 0, 0);">=</span><span style="color: rgb(0, 0, 0);">聽</span><span style="color: rgb(0, 0, 0);">0</span><span style="color: rgb(0, 0, 0);">;<br />聽聽聽聽聽聽聽聽x聽</span><span style="color: rgb(0, 0, 0);">+=</span><span style="color: rgb(0, 0, 0);">聽i;聽聽聽</span><span style="color: rgb(0, 128, 0);">//</span><span style="color: rgb(0, 128, 0);">It聽is聽ok聽because聽it聽contains聽a聽hidden聽cast</span><span style="color: rgb(0, 128, 0);"><br /></span><span style="color: rgb(0, 0, 0);">聽聽聽聽聽聽聽聽x聽</span><span style="color: rgb(0, 0, 0);">=</span><span style="color: rgb(0, 0, 0);">聽x聽</span><span style="color: rgb(0, 0, 0);">+</span><span style="color: rgb(0, 0, 0);">聽i;聽</span><span style="color: rgb(0, 128, 0);">//</span><span style="color: rgb(0, 128, 0);">聽a聽compile-error</span><span style="color: rgb(0, 128, 0);"><br /></span><span style="color: rgb(0, 0, 0);">聽聽聽聽}<br />}</span></span></div>鍏充簬Compound Assignment Operators錛屽弬瑙丣LS 15.26.2.<br /><div align="center">Puzzle 10:<br /><div align="left"><div style="border: 1px solid rgb(204, 204, 204); padding: 4px 5px 4px 4px; background-color: rgb(238, 238, 238); font-size: 13px; width: 98%;"><img id="Code_Closed_Image_132910" onclick="this.style.display='none'; Code_Closed_Text_132910.style.display='none'; Code_Open_Image_132910.style.display='inline'; Code_Open_Text_132910.style.display='inline';" src="http://www.tkk7.com/images/OutliningIndicators/ContractedBlock.gif" align="top" height="16" width="11" /><img id="Code_Open_Image_132910" style="display: none;" onclick="this.style.display='none'; Code_Open_Text_132910.style.display='none'; Code_Closed_Image_132910.style.display='inline'; Code_Closed_Text_132910.style.display='inline';" src="http://www.tkk7.com/images/OutliningIndicators/ExpandedBlockStart.gif" align="top" height="16" width="11" /><span id="Code_Closed_Text_132910" style="border: 1px solid rgb(128, 128, 128); background-color: rgb(255, 255, 255);">Tweedledee.java</span><span id="Code_Open_Text_132910" style="display: none;"><br /><!--<br><br>Code highlighting produced by Actipro CodeHighlighter (freeware)<br>http://www.CodeHighlighter.com/<br><br>--><span style="color: rgb(0, 0, 255);">public</span><span style="color: rgb(0, 0, 0);">聽</span><span style="color: rgb(0, 0, 255);">class</span><span style="color: rgb(0, 0, 0);">聽Tweedledee<br />{<br />聽聽聽聽</span><span style="color: rgb(0, 0, 255);">public</span><span style="color: rgb(0, 0, 0);">聽</span><span style="color: rgb(0, 0, 255);">static</span><span style="color: rgb(0, 0, 0);">聽</span><span style="color: rgb(0, 0, 255);">void</span><span style="color: rgb(0, 0, 0);">聽main(String[]聽args)<br />聽聽聽聽{<br />聽聽聽聽聽聽聽聽</span><span style="color: rgb(0, 128, 0);">//</span><span style="color: rgb(0, 128, 0);">聽Put聽your聽declarations聽for聽x聽and聽i聽here</span><span style="color: rgb(0, 128, 0);"><br /></span><span style="color: rgb(0, 0, 0);"><br />聽聽聽聽聽聽聽聽Object聽x聽</span><span style="color: rgb(0, 0, 0);">=</span><span style="color: rgb(0, 0, 0);">聽</span><span style="color: rgb(0, 0, 0);">"</span><span style="color: rgb(0, 0, 0);">Buy聽</span><span style="color: rgb(0, 0, 0);">"</span><span style="color: rgb(0, 0, 0);">;<br />聽聽聽聽聽聽聽聽String聽i聽</span><span style="color: rgb(0, 0, 0);">=</span><span style="color: rgb(0, 0, 0);">聽</span><span style="color: rgb(0, 0, 0);">"</span><span style="color: rgb(0, 0, 0);">Effective聽Java!</span><span style="color: rgb(0, 0, 0);">"</span><span style="color: rgb(0, 0, 0);">;<br />聽聽聽聽聽聽聽聽x聽</span><span style="color: rgb(0, 0, 0);">=</span><span style="color: rgb(0, 0, 0);">聽x聽</span><span style="color: rgb(0, 0, 0);">+</span><span style="color: rgb(0, 0, 0);">聽i;<br />聽聽聽聽聽聽聽聽</span><span style="color: rgb(0, 128, 0);">//</span><span style="color: rgb(0, 128, 0);">聽Must聽be聽LEGAL</span><span style="color: rgb(0, 128, 0);"><br /></span><span style="color: rgb(0, 0, 0);">聽聽聽聽聽聽聽聽x聽</span><span style="color: rgb(0, 0, 0);">+=</span><span style="color: rgb(0, 0, 0);">聽i;<br />聽聽聽聽聽聽聽聽</span><span style="color: rgb(0, 128, 0);">//</span><span style="color: rgb(0, 128, 0);">聽Must聽be聽I(yíng)LLEGAL</span><span style="color: rgb(0, 128, 0);"><br /></span><span style="color: rgb(0, 0, 0);"><br />聽聽聽聽}<br />}<br /></span></span></div><br /></div></div></div></div></div></div>
<img src ="http://www.tkk7.com/JafeLee/aggbug/138900.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://www.tkk7.com/JafeLee/" target="_blank">Jafe</a> 2007-08-23 17:56 <a href="http://www.tkk7.com/JafeLee/archive/2007/08/23/138900.html#Feedback" target="_blank" style="text-decoration:none;">鍙戣〃璇勮</a></div>]]></description></item><item><title>Expressive Puzzlers (1)</title><link>http://www.tkk7.com/JafeLee/archive/2007/08/11/136015.html</link><dc:creator>Jafe</dc:creator><author>Jafe</author><pubDate>Sat, 11 Aug 2007 05:46:00 GMT</pubDate><guid>http://www.tkk7.com/JafeLee/archive/2007/08/11/136015.html</guid><wfw:comment>http://www.tkk7.com/JafeLee/comments/136015.html</wfw:comment><comments>http://www.tkk7.com/JafeLee/archive/2007/08/11/136015.html#Feedback</comments><slash:comments>0</slash:comments><wfw:commentRss>http://www.tkk7.com/JafeLee/comments/commentRss/136015.html</wfw:commentRss><trackback:ping>http://www.tkk7.com/JafeLee/services/trackbacks/136015.html</trackback:ping><description><![CDATA[錛?	<div align="center"><font color="#ff0000">Puzzle 1:</font><br /></div><br />褰撴眰浣欒繍綆?remainder operation)絎?% 榪斿洖涓�涓潪闆朵綑鏁版椂錛屼綑鏁扮殑絎﹀彿浣嶅拰宸﹁竟鎿嶄綔鏁扮殑絎﹀彿浣嶇浉鍚屻�備緥濡?div style="border: 1px solid rgb(204, 204, 204); padding: 4px 5px 4px 4px; background-color: rgb(238, 238, 238); font-size: 13px; width: 98%;"><!--<br><br>Code highlighting produced by Actipro CodeHighlighter (freeware)<br>http://www.CodeHighlighter.com/<br><br>--><span style="color: rgb(0, 0, 0);">聽聽聽聽聽聽聽聽System.out.println((</span><span style="color: rgb(0, 0, 0);">-</span><span style="color: rgb(0, 0, 0);">53</span><span style="color: rgb(0, 0, 0);">)</span><span style="color: rgb(0, 0, 0);">%</span><span style="color: rgb(0, 0, 0);">9</span><span style="color: rgb(0, 0, 0);">);聽</span><span style="color: rgb(0, 128, 0);">//</span><span style="color: rgb(0, 128, 0);">聽-8</span><span style="color: rgb(0, 128, 0);"><br /></span><span style="color: rgb(0, 0, 0);">聽聽聽聽聽聽聽聽System.out.println(</span><span style="color: rgb(0, 0, 0);">53</span><span style="color: rgb(0, 0, 0);">%</span><span style="color: rgb(0, 0, 0);">(</span><span style="color: rgb(0, 0, 0);">-</span><span style="color: rgb(0, 0, 0);">9</span><span style="color: rgb(0, 0, 0);">));聽</span><span style="color: rgb(0, 128, 0);">//</span><span style="color: rgb(0, 128, 0);">8</span><span style="color: rgb(0, 128, 0);"><br /></span><span style="color: rgb(0, 0, 0);">聽聽聽聽聽聽聽聽System.out.println((</span><span style="color: rgb(0, 0, 0);">-</span><span style="color: rgb(0, 0, 0);">53</span><span style="color: rgb(0, 0, 0);">)</span><span style="color: rgb(0, 0, 0);">%</span><span style="color: rgb(0, 0, 0);">(</span><span style="color: rgb(0, 0, 0);">-</span><span style="color: rgb(0, 0, 0);">9</span><span style="color: rgb(0, 0, 0);">));聽</span><span style="color: rgb(0, 128, 0);">//</span><span style="color: rgb(0, 128, 0);">-8</span></div><br /><div align="center"><font color="#ff0000">Puzzle 2:</font><br /></div><br /><div style="border: 1px solid rgb(204, 204, 204); padding: 4px 5px 4px 4px; background-color: rgb(238, 238, 238); font-size: 13px; width: 98%;"><img id="Code_Closed_Image_164040" onclick="this.style.display='none'; Code_Closed_Text_164040.style.display='none'; Code_Open_Image_164040.style.display='inline'; Code_Open_Text_164040.style.display='inline';" src="http://www.tkk7.com/images/OutliningIndicators/ContractedBlock.gif" align="top" height="16" width="11" /><img id="Code_Open_Image_164040" style="display: none;" onclick="this.style.display='none'; Code_Open_Text_164040.style.display='none'; Code_Closed_Image_164040.style.display='inline'; Code_Closed_Text_164040.style.display='inline';" src="http://www.tkk7.com/images/OutliningIndicators/ExpandedBlockStart.gif" align="top" height="16" width="11" /><span id="Code_Closed_Text_164040" style="border: 1px solid rgb(128, 128, 128); background-color: rgb(255, 255, 255);">Change.java</span><span id="Code_Open_Text_164040" style="display: none;"><br /><!--<br><br>Code highlighting produced by Actipro CodeHighlighter (freeware)<br>http://www.CodeHighlighter.com/<br><br>--><span style="color: rgb(0, 0, 255);">import</span><span style="color: rgb(0, 0, 0);">聽java.math.BigDecimal;<br /></span><span style="color: rgb(0, 0, 255);">public</span><span style="color: rgb(0, 0, 0);">聽</span><span style="color: rgb(0, 0, 255);">class</span><span style="color: rgb(0, 0, 0);">聽Change<br />{<br />聽聽聽聽</span><span style="color: rgb(0, 0, 255);">public</span><span style="color: rgb(0, 0, 0);">聽</span><span style="color: rgb(0, 0, 255);">static</span><span style="color: rgb(0, 0, 0);">聽</span><span style="color: rgb(0, 0, 255);">void</span><span style="color: rgb(0, 0, 0);">聽main(String聽args[])<br />聽聽聽聽{<br />聽聽聽聽聽聽聽聽System.out.println(</span><span style="color: rgb(0, 0, 0);">2.00</span><span style="color: rgb(0, 0, 0);">聽</span><span style="color: rgb(0, 0, 0);">-</span><span style="color: rgb(0, 0, 0);">聽</span><span style="color: rgb(0, 0, 0);">1.10</span><span style="color: rgb(0, 0, 0);">);</span><span style="color: rgb(0, 128, 0);">//</span><span style="color: rgb(0, 128, 0);">0.8999999999999999</span><span style="color: rgb(0, 128, 0);"><br /></span><span style="color: rgb(0, 0, 0);">聽聽聽聽聽聽聽聽System.out.println(</span><span style="color: rgb(0, 0, 255);">new</span><span style="color: rgb(0, 0, 0);">聽BigDecimal(</span><span style="color: rgb(0, 0, 0);">"</span><span style="color: rgb(0, 0, 0);">2.00</span><span style="color: rgb(0, 0, 0);">"</span><span style="color: rgb(0, 0, 0);">).subtract(</span><span style="color: rgb(0, 0, 255);">new</span><span style="color: rgb(0, 0, 0);">聽BigDecimal(</span><span style="color: rgb(0, 0, 0);">"</span><span style="color: rgb(0, 0, 0);">1.10</span><span style="color: rgb(0, 0, 0);">"</span><span style="color: rgb(0, 0, 0);">)));</span><span style="color: rgb(0, 128, 0);">//</span><span style="color: rgb(0, 128, 0);">0.90</span><span style="color: rgb(0, 128, 0);"><br /></span><span style="color: rgb(0, 0, 0);">聽聽聽聽聽聽聽聽System.out.printf(</span><span style="color: rgb(0, 0, 0);">"</span><span style="color: rgb(0, 0, 0);">%.2f%n</span><span style="color: rgb(0, 0, 0);">"</span><span style="color: rgb(0, 0, 0);">,聽</span><span style="color: rgb(0, 0, 0);">2.00</span><span style="color: rgb(0, 0, 0);">-</span><span style="color: rgb(0, 0, 0);">1.10</span><span style="color: rgb(0, 0, 0);">);</span><span style="color: rgb(0, 128, 0);">//</span><span style="color: rgb(0, 128, 0);">0.90</span><span style="color: rgb(0, 128, 0);"><br /></span><span style="color: rgb(0, 0, 0);">聽聽聽聽}<br />}<br /></span></span></div><br />鍏充簬嫻偣鏁扮殑浜岃繘鍒惰〃紺猴綖锝?br />錛?錛変簩榪涘埗嫻偣鏁板茍涓嶈兘綺劇‘琛ㄧず鎵�鏈夌殑灝忔暟<br />錛?錛夊璁＄畻綺懼害瑕佹眰姣旇緝鍑嗙‘錛堜緥濡傞噾铻嶈綆楋級(jí)鏃訛紝涓嶈浣跨敤float鍜宒ouble錛屽敖閲忎嬌鐢╥nt, long錛孊igDecimal.<br />錛?錛夋帹鑽愰槄璇繪枃绔狅細(xì)What Every Computer Scientist Should Know About Floating-Point Arithmetic<br />緗戜笂寰堝鍦版柟閮芥湁鐨勩�傚彟涓�鏈墰涔?Computer Systems A Programmers's Perspective涓婁篃鏈夎嫻偣鏁?br />錛?錛塉LS 3.10.1鐢辮鑼冨彲鐭?0.1, .1, 1. 閮芥槸鍚堟硶鐨勬誕鐐規(guī)暟銆傞渶瑕佹敞鎰忕殑鏄湪java涓紝嫻偣鏁版湁涓ょ鍘熺敓綾誨瀷float,double錛屽綋嫻偣鏁扮殑鍚庣紑鏄疐鎴栬�協(xié)鏃訛紝璇ユ誕鐐規(guī)暟涓篺loat綾誨瀷錛屾病鏈夊悗緙�鎴栬�呭悗緙�鏄疍鎴栬�卍鏃訛紝璇ユ誕鐐規(guī)暟鏄痙ouble綾誨瀷鐨勩�傛敞鎰忎笅闈㈢殑渚嬪瓙<br /><div style="border: 1px solid rgb(204, 204, 204); padding: 4px 5px 4px 4px; background-color: rgb(238, 238, 238); font-size: 13px; width: 98%;"><img id="Code_Closed_Image_185827" onclick="this.style.display='none'; Code_Closed_Text_185827.style.display='none'; Code_Open_Image_185827.style.display='inline'; Code_Open_Text_185827.style.display='inline';" src="http://www.tkk7.com/images/OutliningIndicators/ContractedBlock.gif" align="top" height="16" width="11" /><img id="Code_Open_Image_185827" style="display: none;" onclick="this.style.display='none'; Code_Open_Text_185827.style.display='none'; Code_Closed_Image_185827.style.display='inline'; Code_Closed_Text_185827.style.display='inline';" src="http://www.tkk7.com/images/OutliningIndicators/ExpandedBlockStart.gif" align="top" height="16" width="11" /><span id="Code_Closed_Text_185827" style="border: 1px solid rgb(128, 128, 128); background-color: rgb(255, 255, 255);">FloatPoint.java</span><span id="Code_Open_Text_185827" style="display: none;"><br /><!--<br><br>Code highlighting produced by Actipro CodeHighlighter (freeware)<br>http://www.CodeHighlighter.com/<br><br>--><span style="color: rgb(0, 0, 255);">public</span><span style="color: rgb(0, 0, 0);">聽</span><span style="color: rgb(0, 0, 255);">class</span><span style="color: rgb(0, 0, 0);">聽FloatPoint<br />{<br />聽聽聽聽</span><span style="color: rgb(0, 0, 255);">public</span><span style="color: rgb(0, 0, 0);">聽</span><span style="color: rgb(0, 0, 255);">static</span><span style="color: rgb(0, 0, 0);">聽</span><span style="color: rgb(0, 0, 255);">void</span><span style="color: rgb(0, 0, 0);">聽main(String聽[]聽args)<br />聽聽聽聽{<br />聽聽聽聽聽聽聽聽</span><span style="color: rgb(0, 0, 255);">double</span><span style="color: rgb(0, 0, 0);">聽x聽</span><span style="color: rgb(0, 0, 0);">=</span><span style="color: rgb(0, 0, 0);">聽.</span><span style="color: rgb(0, 0, 0);">12345</span><span style="color: rgb(0, 0, 0);">;<br />聽聽聽聽聽聽聽聽</span><span style="color: rgb(0, 0, 255);">double</span><span style="color: rgb(0, 0, 0);">聽y聽</span><span style="color: rgb(0, 0, 0);">=</span><span style="color: rgb(0, 0, 0);">聽</span><span style="color: rgb(0, 0, 0);">1234</span><span style="color: rgb(0, 0, 0);">.;<br />聽聽聽聽聽聽聽聽</span><span style="color: rgb(0, 0, 255);">double</span><span style="color: rgb(0, 0, 0);">聽z聽</span><span style="color: rgb(0, 0, 0);">=</span><span style="color: rgb(0, 0, 0);">聽</span><span style="color: rgb(0, 0, 0);">1.123432343</span><span style="color: rgb(0, 0, 0);">;<br />聽聽聽聽聽聽聽聽<br />聽聽聽聽聽聽聽聽</span><span style="color: rgb(0, 128, 0);">//</span><span style="color: rgb(0, 128, 0);">float聽a聽=聽0.1;聽--聽鍙兘鎹熷け綺懼害</span><span style="color: rgb(0, 128, 0);"><br /></span><span style="color: rgb(0, 0, 0);">聽聽聽聽聽聽聽聽</span><span style="color: rgb(0, 0, 255);">float</span><span style="color: rgb(0, 0, 0);">聽b聽</span><span style="color: rgb(0, 0, 0);">=</span><span style="color: rgb(0, 0, 0);">聽</span><span style="color: rgb(0, 0, 0);">0.1f</span><span style="color: rgb(0, 0, 0);">;<br />聽聽聽聽聽聽聽聽</span><span style="color: rgb(0, 0, 255);">float</span><span style="color: rgb(0, 0, 0);">聽c聽</span><span style="color: rgb(0, 0, 0);">=</span><span style="color: rgb(0, 0, 0);">聽.1234f;<br />聽聽聽聽聽聽聽聽</span><span style="color: rgb(0, 128, 0);">//</span><span style="color: rgb(0, 128, 0);">float聽d聽=聽.123;聽錛嶏紞鍙兘鎹熷け綺懼害</span><span style="color: rgb(0, 128, 0);"><br /></span><span style="color: rgb(0, 0, 0);">聽聽聽聽聽聽聽聽System.out.println(</span><span style="color: rgb(0, 0, 0);">"</span><span style="color: rgb(0, 0, 0);">x聽=聽</span><span style="color: rgb(0, 0, 0);">"</span><span style="color: rgb(0, 0, 0);">聽</span><span style="color: rgb(0, 0, 0);">+</span><span style="color: rgb(0, 0, 0);">聽x);<br />聽聽聽聽聽聽聽聽System.out.println(</span><span style="color: rgb(0, 0, 0);">"</span><span style="color: rgb(0, 0, 0);">y聽=聽</span><span style="color: rgb(0, 0, 0);">"</span><span style="color: rgb(0, 0, 0);">聽</span><span style="color: rgb(0, 0, 0);">+</span><span style="color: rgb(0, 0, 0);">聽y);<br />聽聽聽聽聽聽聽聽System.out.println(</span><span style="color: rgb(0, 0, 0);">"</span><span style="color: rgb(0, 0, 0);">z聽=聽</span><span style="color: rgb(0, 0, 0);">"</span><span style="color: rgb(0, 0, 0);">聽</span><span style="color: rgb(0, 0, 0);">+</span><span style="color: rgb(0, 0, 0);">聽z);<br />聽聽聽聽聽聽聽聽<br />聽聽聽聽聽聽聽聽System.out.println(</span><span style="color: rgb(0, 0, 0);">"</span><span style="color: rgb(0, 0, 0);">b聽=聽</span><span style="color: rgb(0, 0, 0);">"</span><span style="color: rgb(0, 0, 0);">聽</span><span style="color: rgb(0, 0, 0);">+</span><span style="color: rgb(0, 0, 0);">聽b);<br />聽聽聽聽聽聽聽聽System.out.println(</span><span style="color: rgb(0, 0, 0);">"</span><span style="color: rgb(0, 0, 0);">c聽=聽</span><span style="color: rgb(0, 0, 0);">"</span><span style="color: rgb(0, 0, 0);">聽</span><span style="color: rgb(0, 0, 0);">+</span><span style="color: rgb(0, 0, 0);">聽c);<br />聽聽聽聽}<br />}</span></span></div><br />緇撴灉錛?br /><div style="border: 1px solid rgb(204, 204, 204); padding: 4px 5px 4px 4px; background-color: rgb(238, 238, 238); font-size: 13px; width: 98%;"><img id="Code_Closed_Image_185939" onclick="this.style.display='none'; Code_Closed_Text_185939.style.display='none'; Code_Open_Image_185939.style.display='inline'; Code_Open_Text_185939.style.display='inline';" src="http://www.tkk7.com/images/OutliningIndicators/ContractedBlock.gif" align="top" height="16" width="11" /><img id="Code_Open_Image_185939" style="display: none;" onclick="this.style.display='none'; Code_Open_Text_185939.style.display='none'; Code_Closed_Image_185939.style.display='inline'; Code_Closed_Text_185939.style.display='inline';" src="http://www.tkk7.com/images/OutliningIndicators/ExpandedBlockStart.gif" align="top" height="16" width="11" /><span id="Code_Closed_Text_185939" style="border: 1px solid rgb(128, 128, 128); background-color: rgb(255, 255, 255);">緇撴灉</span><span id="Code_Open_Text_185939" style="display: none;"><br /><!--<br><br>Code highlighting produced by Actipro CodeHighlighter (freeware)<br>http://www.CodeHighlighter.com/<br><br>--><span style="color: rgb(0, 0, 0);">x聽</span><span style="color: rgb(0, 0, 0);">=</span><span style="color: rgb(0, 0, 0);">聽</span><span style="color: rgb(0, 0, 0);">0.12345</span><span style="color: rgb(0, 0, 0);"><br />y聽</span><span style="color: rgb(0, 0, 0);">=</span><span style="color: rgb(0, 0, 0);">聽</span><span style="color: rgb(0, 0, 0);">1234.0</span><span style="color: rgb(0, 0, 0);"><br />z聽</span><span style="color: rgb(0, 0, 0);">=</span><span style="color: rgb(0, 0, 0);">聽</span><span style="color: rgb(0, 0, 0);">1.123432343</span><span style="color: rgb(0, 0, 0);"><br />b聽</span><span style="color: rgb(0, 0, 0);">=</span><span style="color: rgb(0, 0, 0);">聽</span><span style="color: rgb(0, 0, 0);">0.1</span><span style="color: rgb(0, 0, 0);"><br />c聽</span><span style="color: rgb(0, 0, 0);">=</span><span style="color: rgb(0, 0, 0);">聽</span><span style="color: rgb(0, 0, 0);">0.1234</span></span></div><br /><div align="center"><font color="#ff0000">Puzzle 3:</font><br /></div>闇�瑕佹敞鎰廽ava鏄浣曞鐞嗘暣鏁版孩鍑虹殑錛岀湅涓嬮潰鐨勪緥瀛愬氨涓�鐩簡(jiǎn)鐒朵簡(jiǎn)錛屽埆蹇樹簡(jiǎn)long鏄?8 bytes錛宨nt鏄?4 bytes鐨剘~<br /><div style="border: 1px solid rgb(204, 204, 204); padding: 4px 5px 4px 4px; background-color: rgb(238, 238, 238); font-size: 13px; width: 98%;"><img id="Code_Closed_Image_192116" onclick="this.style.display='none'; Code_Closed_Text_192116.style.display='none'; Code_Open_Image_192116.style.display='inline'; Code_Open_Text_192116.style.display='inline';" src="http://www.tkk7.com/images/OutliningIndicators/ContractedBlock.gif" align="top" height="16" width="11" /><img id="Code_Open_Image_192116" style="display: none;" onclick="this.style.display='none'; Code_Open_Text_192116.style.display='none'; Code_Closed_Image_192116.style.display='inline'; Code_Closed_Text_192116.style.display='inline';" src="http://www.tkk7.com/images/OutliningIndicators/ExpandedBlockStart.gif" align="top" height="16" width="11" /><span id="Code_Closed_Text_192116" style="border: 1px solid rgb(128, 128, 128); background-color: rgb(255, 255, 255);">LongDividion.java</span><span id="Code_Open_Text_192116" style="display: none;"><br /><!--<br><br>Code highlighting produced by Actipro CodeHighlighter (freeware)<br>http://www.CodeHighlighter.com/<br><br>--><span style="color: rgb(0, 0, 255);">public</span><span style="color: rgb(0, 0, 0);">聽</span><span style="color: rgb(0, 0, 255);">class</span><span style="color: rgb(0, 0, 0);">聽LongDivision<br />{<br />聽聽聽聽</span><span style="color: rgb(0, 0, 255);">public</span><span style="color: rgb(0, 0, 0);">聽</span><span style="color: rgb(0, 0, 255);">static</span><span style="color: rgb(0, 0, 0);">聽</span><span style="color: rgb(0, 0, 255);">void</span><span style="color: rgb(0, 0, 0);">聽main(String[]聽args)<br />聽聽聽聽{<br />聽聽聽聽聽聽聽聽</span><span style="color: rgb(0, 0, 255);">final</span><span style="color: rgb(0, 0, 0);">聽</span><span style="color: rgb(0, 0, 255);">long</span><span style="color: rgb(0, 0, 0);">聽MICROS_PER_DAY聽</span><span style="color: rgb(0, 0, 0);">=</span><span style="color: rgb(0, 0, 0);">聽</span><span style="color: rgb(0, 0, 0);">24</span><span style="color: rgb(0, 0, 0);">聽</span><span style="color: rgb(0, 0, 0);">*</span><span style="color: rgb(0, 0, 0);">聽</span><span style="color: rgb(0, 0, 0);">60</span><span style="color: rgb(0, 0, 0);">聽</span><span style="color: rgb(0, 0, 0);">*</span><span style="color: rgb(0, 0, 0);">聽</span><span style="color: rgb(0, 0, 0);">60</span><span style="color: rgb(0, 0, 0);">聽</span><span style="color: rgb(0, 0, 0);">*</span><span style="color: rgb(0, 0, 0);">聽</span><span style="color: rgb(0, 0, 0);">1000</span><span style="color: rgb(0, 0, 0);">聽</span><span style="color: rgb(0, 0, 0);">*</span><span style="color: rgb(0, 0, 0);">聽</span><span style="color: rgb(0, 0, 0);">1000L</span><span style="color: rgb(0, 0, 0);">;<br />聽聽聽聽聽聽聽聽</span><span style="color: rgb(0, 0, 255);">final</span><span style="color: rgb(0, 0, 0);">聽</span><span style="color: rgb(0, 0, 255);">long</span><span style="color: rgb(0, 0, 0);">聽MILLIS_PER_DAY聽</span><span style="color: rgb(0, 0, 0);">=</span><span style="color: rgb(0, 0, 0);">聽</span><span style="color: rgb(0, 0, 0);">24</span><span style="color: rgb(0, 0, 0);">聽</span><span style="color: rgb(0, 0, 0);">*</span><span style="color: rgb(0, 0, 0);">聽</span><span style="color: rgb(0, 0, 0);">60</span><span style="color: rgb(0, 0, 0);">聽</span><span style="color: rgb(0, 0, 0);">*</span><span style="color: rgb(0, 0, 0);">聽</span><span style="color: rgb(0, 0, 0);">60</span><span style="color: rgb(0, 0, 0);">聽</span><span style="color: rgb(0, 0, 0);">*</span><span style="color: rgb(0, 0, 0);">聽</span><span style="color: rgb(0, 0, 0);">1000L</span><span style="color: rgb(0, 0, 0);">;<br /><br />聽聽聽聽聽聽聽聽</span><span style="color: rgb(0, 0, 255);">final</span><span style="color: rgb(0, 0, 0);">聽</span><span style="color: rgb(0, 0, 255);">int</span><span style="color: rgb(0, 0, 0);">聽micros_per_day聽</span><span style="color: rgb(0, 0, 0);">=</span><span style="color: rgb(0, 0, 0);">聽(</span><span style="color: rgb(0, 0, 255);">int</span><span style="color: rgb(0, 0, 0);">)聽MICROS_PER_DAY;<br />聽聽聽聽聽聽聽聽</span><span style="color: rgb(0, 0, 255);">final</span><span style="color: rgb(0, 0, 0);">聽</span><span style="color: rgb(0, 0, 255);">int</span><span style="color: rgb(0, 0, 0);">聽millis_per_day聽</span><span style="color: rgb(0, 0, 0);">=</span><span style="color: rgb(0, 0, 0);">聽(</span><span style="color: rgb(0, 0, 255);">int</span><span style="color: rgb(0, 0, 0);">)MILLIS_PER_DAY;<br />聽聽聽聽聽聽聽聽<br />聽聽聽聽聽聽聽聽System.out.println(Long.toHexString(MICROS_PER_DAY));聽聽</span><span style="color: rgb(0, 128, 0);">//</span><span style="color: rgb(0, 128, 0);">聽聽聽聽聽聽141dd76000</span><span style="color: rgb(0, 128, 0);"><br /></span><span style="color: rgb(0, 0, 0);">聽聽聽聽聽聽聽聽System.out.println(Integer.toHexString(micros_per_day));聽聽</span><span style="color: rgb(0, 128, 0);">//</span><span style="color: rgb(0, 128, 0);">聽聽聽聽聽1dd76000</span><span style="color: rgb(0, 128, 0);"><br /></span><span style="color: rgb(0, 0, 0);">聽聽聽聽聽聽聽聽聽System.out.println(</span><span style="color: rgb(0, 0, 0);">"</span><span style="color: rgb(0, 0, 0);">*********************************</span><span style="color: rgb(0, 0, 0);">"</span><span style="color: rgb(0, 0, 0);">);<br />聽聽聽聽聽聽聽聽System.out.println(micros_per_day);聽</span><span style="color: rgb(0, 128, 0);">//</span><span style="color: rgb(0, 128, 0);">聽500654080</span><span style="color: rgb(0, 128, 0);"><br /></span><span style="color: rgb(0, 0, 0);">聽聽聽聽聽聽聽聽System.out.println(millis_per_day);聽</span><span style="color: rgb(0, 128, 0);">//</span><span style="color: rgb(0, 128, 0);">聽86400000</span><span style="color: rgb(0, 128, 0);"><br /></span><span style="color: rgb(0, 0, 0);">聽聽聽聽}<br />}<br /></span></span></div><br /><div align="center"><font color="#ff0000">Puzzle 4:</font><br /></div>娣誨姞long鍨嬫暣鏁扮殑鍚庣紑鏃惰浣跨敤L閬垮厤鐢╨錛屽悓鏍蜂笉瑕佸崟鐙嬌鐢ㄥ皬鍐欏瓧姣峫浣滀負(fù)鍙橀噺鍚嶏紝鐞嗙敱鏄樉鑰屾槗瑙佺殑錛歭鍜?鍦ㄥぇ澶氭暟瀛椾綋涓お闅懼尯鍒嗐�?br /><div align="center"><font color="#ff0000">Puzzle 5:</font><br /><div align="left">錛?錛夊拰鍗佽繘鍒舵暟涓嶅悓錛屽綋鍗佸叚榪涘埗銆佸叓榪涘埗鏁扮殑鏈�楂樹綅鏄?鏃訛紝琛ㄧず瀹冩槸涓�涓礋鏁幫紙鍦ㄥ崄榪涘埗鏁頒腑錛岃〃紺轟竴涓礋鏁拌鏄懼紡浣跨敤絎﹀彿-)<br />錛?錛夊敖閲忛伩鍏嶆販鍚堢被鍨嬭繍綆楋紝渚嬪鏈緥涓殑 long鍨嬪拰int鍨嬬殑鍔犳硶錛屽湪java涓紝涓�涓暣鏁板鏋滄病鏈夊悗緙�L鎴杔錛屽垯瀹冩槸涓�涓猧nt鍨嬭�屼笉鏄痩ong鍨嬨�?div style="border: 1px solid rgb(204, 204, 204); padding: 4px 5px 4px 4px; background-color: rgb(238, 238, 238); font-size: 13px; width: 98%;"><img id="Code_Closed_Image_144004" onclick="this.style.display='none'; Code_Closed_Text_144004.style.display='none'; Code_Open_Image_144004.style.display='inline'; Code_Open_Text_144004.style.display='inline';" src="http://www.tkk7.com/images/OutliningIndicators/ContractedBlock.gif" align="top" height="16" width="11" /><img id="Code_Open_Image_144004" style="display: none;" onclick="this.style.display='none'; Code_Open_Text_144004.style.display='none'; Code_Closed_Image_144004.style.display='inline'; Code_Closed_Text_144004.style.display='inline';" src="http://www.tkk7.com/images/OutliningIndicators/ExpandedBlockStart.gif" align="top" height="16" width="11" /><span id="Code_Closed_Text_144004" style="border: 1px solid rgb(128, 128, 128); background-color: rgb(255, 255, 255);">JoyOfHex.java</span><span id="Code_Open_Text_144004" style="display: none;"><br /><!--<br><br>Code highlighting produced by Actipro CodeHighlighter (freeware)<br>http://www.CodeHighlighter.com/<br><br>--><span style="color: rgb(0, 0, 255);">public</span><span style="color: rgb(0, 0, 0);">聽</span><span style="color: rgb(0, 0, 255);">class</span><span style="color: rgb(0, 0, 0);">聽JoyOfHex<br />{<br />聽聽聽聽</span><span style="color: rgb(0, 0, 255);">public</span><span style="color: rgb(0, 0, 0);">聽</span><span style="color: rgb(0, 0, 255);">static</span><span style="color: rgb(0, 0, 0);">聽</span><span style="color: rgb(0, 0, 255);">void</span><span style="color: rgb(0, 0, 0);">聽main(String[]聽args)<br />聽聽聽聽{<br />聽聽聽聽聽聽聽聽System.out.println(Long.toHexString(</span><span style="color: rgb(0, 0, 0);">0x100000000L</span><span style="color: rgb(0, 0, 0);">聽</span><span style="color: rgb(0, 0, 0);">+</span><span style="color: rgb(0, 0, 0);">聽</span><span style="color: rgb(0, 0, 0);">0xcafebabe</span><span style="color: rgb(0, 0, 0);">));</span><span style="color: rgb(0, 128, 0);">//</span><span style="color: rgb(0, 128, 0);">cafebabe聽instead聽of聽1cafebabe</span><span style="color: rgb(0, 128, 0);"><br /></span><span style="color: rgb(0, 0, 0);">聽聽聽聽聽聽聽聽System.out.println(Long.toHexString(</span><span style="color: rgb(0, 0, 0);">0x100000000L</span><span style="color: rgb(0, 0, 0);">聽</span><span style="color: rgb(0, 0, 0);">+</span><span style="color: rgb(0, 0, 0);">聽</span><span style="color: rgb(0, 0, 0);">0xcafebabeL</span><span style="color: rgb(0, 0, 0);">));聽</span><span style="color: rgb(0, 128, 0);">//</span><span style="color: rgb(0, 128, 0);">聽1cafebabe</span><span style="color: rgb(0, 128, 0);"><br /></span><span style="color: rgb(0, 0, 0);">聽聽聽聽聽聽聽聽System.out.println(</span><span style="color: rgb(0, 0, 0);">0xffffffffL</span><span style="color: rgb(0, 0, 0);">);聽</span><span style="color: rgb(0, 128, 0);">//</span><span style="color: rgb(0, 128, 0);">聽4294967295</span><span style="color: rgb(0, 128, 0);"><br /></span><span style="color: rgb(0, 0, 0);">聽聽聽聽聽聽聽聽System.out.println(</span><span style="color: rgb(0, 0, 0);">0xffffffff</span><span style="color: rgb(0, 0, 0);">);聽</span><span style="color: rgb(0, 128, 0);">//</span><span style="color: rgb(0, 128, 0);">聽-1</span><span style="color: rgb(0, 128, 0);"><br /></span><span style="color: rgb(0, 0, 0);">聽聽聽聽}<br />}<br /></span></span></div><div align="center"><font color="#ff0000">Puzzle 6:<br /></font><div align="left">The rule "<font color="#0000ff" face="Times New Roman" size="4">Sign
extension is performed if the type of the original value is signed;
zero extension if it is a char, regardless of the type to which it is
being converted</font>" describes the sign extension behavior when converting <font color="#ff1493" size="3">from narrower integral types to wider</font>.<br /><br /></div><div align="left"><div style="border: 1px solid rgb(204, 204, 204); padding: 4px 5px 4px 4px; background-color: rgb(238, 238, 238); font-size: 13px; width: 98%;"><img id="Code_Closed_Image_133155" onclick="this.style.display='none'; Code_Closed_Text_133155.style.display='none'; Code_Open_Image_133155.style.display='inline'; Code_Open_Text_133155.style.display='inline';" src="http://www.tkk7.com/images/OutliningIndicators/ContractedBlock.gif" align="top" height="16" width="11" /><img id="Code_Open_Image_133155" style="display: none;" onclick="this.style.display='none'; Code_Open_Text_133155.style.display='none'; Code_Closed_Image_133155.style.display='inline'; Code_Closed_Text_133155.style.display='inline';" src="http://www.tkk7.com/images/OutliningIndicators/ExpandedBlockStart.gif" align="top" height="16" width="11" /><span id="Code_Closed_Text_133155" style="border: 1px solid rgb(128, 128, 128); background-color: rgb(255, 255, 255);">Multicast.java</span><span id="Code_Open_Text_133155" style="display: none;"><br /><!--<br><br>Code highlighting produced by Actipro CodeHighlighter (freeware)<br>http://www.CodeHighlighter.com/<br><br>--><span style="color: rgb(0, 0, 255);">public</span><span style="color: rgb(0, 0, 0);">聽</span><span style="color: rgb(0, 0, 255);">class</span><span style="color: rgb(0, 0, 0);">聽Multicast<br />{<br />聽聽聽聽</span><span style="color: rgb(0, 0, 255);">public</span><span style="color: rgb(0, 0, 0);">聽</span><span style="color: rgb(0, 0, 255);">static</span><span style="color: rgb(0, 0, 0);">聽</span><span style="color: rgb(0, 0, 255);">void</span><span style="color: rgb(0, 0, 0);">聽main(String[]聽args)<br />聽聽聽聽{<br />聽聽聽聽聽聽聽聽</span><span style="color: rgb(0, 128, 0);">/*</span><span style="color: rgb(0, 128, 0);">聽聽int聽-&gt;聽byte聽:聽0xffffffff聽-&gt;聽0xff<br />聽聽聽聽聽聽聽聽*聽聽聽聽聽聽聽聽byte聽-&gt;聽char:聽0xff聽-&gt;聽0xffff<br />聽聽聽聽聽聽聽聽*聽聽聽聽聽聽聽聽char聽-&gt;聽int聽:聽0xffff聽-&gt;聽0x0000ffff<br />聽聽聽聽聽聽聽聽</span><span style="color: rgb(0, 128, 0);">*/</span><span style="color: rgb(0, 0, 0);"><br />聽聽聽聽聽聽聽聽System.out.println((</span><span style="color: rgb(0, 0, 255);">int</span><span style="color: rgb(0, 0, 0);">)聽(</span><span style="color: rgb(0, 0, 255);">char</span><span style="color: rgb(0, 0, 0);">)聽(</span><span style="color: rgb(0, 0, 255);">byte</span><span style="color: rgb(0, 0, 0);">)聽</span><span style="color: rgb(0, 0, 0);">-</span><span style="color: rgb(0, 0, 0);">1</span><span style="color: rgb(0, 0, 0);">);聽</span><span style="color: rgb(0, 128, 0);">//</span><span style="color: rgb(0, 128, 0);">0x0000ffff聽=聽65535</span><span style="color: rgb(0, 128, 0);"><br /></span><span style="color: rgb(0, 0, 0);">聽聽聽聽}<br />}<br /></span></span></div><div align="center"><font color="#ff0000">Puzzle 6:<br /></font><div align="left">JLS 15.7 Evaluation Order</div></div><div style="border: 1px solid rgb(204, 204, 204); padding: 4px 5px 4px 4px; background-color: rgb(238, 238, 238); font-size: 13px; width: 98%;"><img id="Code_Closed_Image_135811" onclick="this.style.display='none'; Code_Closed_Text_135811.style.display='none'; Code_Open_Image_135811.style.display='inline'; Code_Open_Text_135811.style.display='inline';" src="http://www.tkk7.com/images/OutliningIndicators/ContractedBlock.gif" align="top" height="16" width="11" /><img id="Code_Open_Image_135811" style="display: none;" onclick="this.style.display='none'; Code_Open_Text_135811.style.display='none'; Code_Closed_Image_135811.style.display='inline'; Code_Closed_Text_135811.style.display='inline';" src="http://www.tkk7.com/images/OutliningIndicators/ExpandedBlockStart.gif" align="top" height="16" width="11" /><span id="Code_Closed_Text_135811" style="border: 1px solid rgb(128, 128, 128); background-color: rgb(255, 255, 255);">CleverSwap.java</span><span id="Code_Open_Text_135811" style="display: none;"><br /><!--<br><br>Code highlighting produced by Actipro CodeHighlighter (freeware)<br>http://www.CodeHighlighter.com/<br><br>--><span style="color: rgb(0, 0, 255);">public</span><span style="color: rgb(0, 0, 0);">聽</span><span style="color: rgb(0, 0, 255);">class</span><span style="color: rgb(0, 0, 0);">聽CleverSwap<br />{<br />聽聽聽聽</span><span style="color: rgb(0, 0, 255);">public</span><span style="color: rgb(0, 0, 0);">聽</span><span style="color: rgb(0, 0, 255);">static</span><span style="color: rgb(0, 0, 0);">聽</span><span style="color: rgb(0, 0, 255);">void</span><span style="color: rgb(0, 0, 0);">聽main(String[]聽args)<br />聽聽聽聽{<br />聽聽聽聽聽聽聽聽</span><span style="color: rgb(0, 0, 255);">int</span><span style="color: rgb(0, 0, 0);">聽x聽</span><span style="color: rgb(0, 0, 0);">=</span><span style="color: rgb(0, 0, 0);">聽</span><span style="color: rgb(0, 0, 0);">1984</span><span style="color: rgb(0, 0, 0);">;<br />聽聽聽聽聽聽聽聽</span><span style="color: rgb(0, 0, 255);">int</span><span style="color: rgb(0, 0, 0);">聽y聽</span><span style="color: rgb(0, 0, 0);">=</span><span style="color: rgb(0, 0, 0);">聽</span><span style="color: rgb(0, 0, 0);">2001</span><span style="color: rgb(0, 0, 0);">;<br />聽聽聽聽聽聽聽聽x聽</span><span style="color: rgb(0, 0, 0);">^=</span><span style="color: rgb(0, 0, 0);">聽y聽</span><span style="color: rgb(0, 0, 0);">^=</span><span style="color: rgb(0, 0, 0);">聽x聽</span><span style="color: rgb(0, 0, 0);">^=</span><span style="color: rgb(0, 0, 0);">聽y;<br />聽聽聽聽聽聽聽聽System.out.println(</span><span style="color: rgb(0, 0, 0);">"</span><span style="color: rgb(0, 0, 0);">x聽=聽</span><span style="color: rgb(0, 0, 0);">"</span><span style="color: rgb(0, 0, 0);">聽</span><span style="color: rgb(0, 0, 0);">+</span><span style="color: rgb(0, 0, 0);">聽x聽</span><span style="color: rgb(0, 0, 0);">+</span><span style="color: rgb(0, 0, 0);">聽</span><span style="color: rgb(0, 0, 0);">"</span><span style="color: rgb(0, 0, 0);">;聽y聽=聽</span><span style="color: rgb(0, 0, 0);">"</span><span style="color: rgb(0, 0, 0);">聽</span><span style="color: rgb(0, 0, 0);">+</span><span style="color: rgb(0, 0, 0);">聽y);聽</span><span style="color: rgb(0, 128, 0);">//</span><span style="color: rgb(0, 128, 0);">聽x聽=聽0;聽y聽=聽1984</span><span style="color: rgb(0, 128, 0);"><br /></span><span style="color: rgb(0, 0, 0);">聽聽聽聽}<br />}<br /></span></span></div><br /></div></div></div></div><img src ="http://www.tkk7.com/JafeLee/aggbug/136015.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://www.tkk7.com/JafeLee/" target="_blank">Jafe</a> 2007-08-11 13:46 <a href="http://www.tkk7.com/JafeLee/archive/2007/08/11/136015.html#Feedback" target="_blank" style="text-decoration:none;">鍙戣〃璇勮</a></div>]]></description></item><item><title>Java 瑙ｆ儜錛堣嫳鏂囩増錛?/title><link>http://www.tkk7.com/JafeLee/archive/2007/08/11/136005.html</link><dc:creator>Jafe</dc:creator><author>Jafe</author><pubDate>Sat, 11 Aug 2007 04:40:00 GMT</pubDate><guid>http://www.tkk7.com/JafeLee/archive/2007/08/11/136005.html</guid><wfw:comment>http://www.tkk7.com/JafeLee/comments/136005.html</wfw:comment><comments>http://www.tkk7.com/JafeLee/archive/2007/08/11/136005.html#Feedback</comments><slash:comments>1</slash:comments><wfw:commentRss>http://www.tkk7.com/JafeLee/comments/commentRss/136005.html</wfw:commentRss><trackback:ping>http://www.tkk7.com/JafeLee/services/trackbacks/136005.html</trackback:ping><description><![CDATA[
		<table style="margin-top: 16px;" border="0" cellpadding="0" cellspacing="0" height="206" width="733">
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								<td>銆愬師 涔?鍚嶃�?</td>
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                Java Puzzlers錛歍raps錛孭itfalls錛宎nd Corner Cases
                
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								<td>銆愬師鍑虹増紺俱�?</td>
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								<td>銆愪綔銆�銆�鑰呫�?/td>
								<td>錛堢編錛塉oshua Bloch, Neal Gafter聽<span></span></td>
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								<td>銆愪笡 涔?鍚嶃�?</td>
								<td>鍏歌棌鍘熺増涔﹁嫅</td>
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								<td>銆愬嚭 鐗?紺俱�?</td>
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								<td>銆愪功      鍙楓�?/td>
								<td>7115149569</td>
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								<td>銆愬紑    鏈�?/td>
								<td>16寮�</td>
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								<td>銆愰〉    鐮併�?/td>
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								<td>銆愮増    嬈°�?/td>
								<td>1-1<br /></td>
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		<br />寰堜笉閿欑殑涓�鏈功錛屾瘡涓棶棰樼瘒騫呯煭灝忥紝闂鐭ヨ瘑鎬у緢寮猴紝鍚屾椂鍙堜笉涔忚叮鍛蟲�э綖锝?br />緗戜笂寰堝鍦版柟閮芥湁鐢?shù)瀛愮増涓嬭浇锛屽寘鎷瑆ww.flazx.com<br />btw錛孞oshua Block鏄?Effective Java鐨勪綔鑰?br /><br /><img src ="http://www.tkk7.com/JafeLee/aggbug/136005.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://www.tkk7.com/JafeLee/" target="_blank">Jafe</a> 2007-08-11 12:40 <a href="http://www.tkk7.com/JafeLee/archive/2007/08/11/136005.html#Feedback" target="_blank" style="text-decoration:none;">鍙戣〃璇勮</a></div>]]></description></item></channel></rss>                                                               <footer>
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