]]>
javascrip 鎿嶄綔 java瀵硅薄銆?br />
GEllipse ellipse = new GEllipse();//鑷畾涔塲ava瀵硅薄
//娣誨姞涓婁笅鏂囩粦瀹氭暟鎹?br /> SimpleBindings bindings = new SimpleBindings();
bindings.put("ellipse", ellipse);
ScriptEngine engine = sem.getEngineByExtension("js");
engine.setBindings(bindings, ScriptContext.ENGINE_SCOPE);
try{
engine.eval(" ellipse.setX(101);");//鑴氭湰閲岃緗嚜瀹氫箟java瀵硅薄瀵硅薄灞炴?br /> System.out.println(ellipse.getX());//杈撳嚭101錛屾祴璇昈K
}catch(Exception ex){
ex.printStackTrace();
}
]]>
寰堟棭灝卞惉璇翠簡榪欎釜鍔熻兘涓鐩存病浠旂粏鐪嬬湅錛屽皾璇曚簡涓?鍔熻兘涓嶉敊錛?br />
public static void main(String[] args) {
ScriptEngineManager sem = new ScriptEngineManager();
//娣誨姞涓婁笅鏂囩粦瀹氭暟鎹?br /> SimpleBindings bindings = new SimpleBindings();
bindings.put("aaa_av", new Double(10000.1));
bindings.put("bbb_av", new Double(20000.2));
ScriptEngine engine = sem.getEngineByExtension("js");
engine.setBindings(bindings, ScriptContext.ENGINE_SCOPE);
try{
//鐩存帴瑙ｆ瀽
Object res = engine.eval(" res = Math.max(aaa_av , bbb_av) + aaa_av");
System.out.println(res);
//鍒涘緩鑴氭湰
String script = "function getMax() "
+ "{ return Math.max(aaa_av , bbb_av)}";
//鎵ц鑴氭湰
engine.eval(script);
Invocable inv = (Invocable) engine;
//鎵ц鏂規硶騫朵紶閫掑弬鏁?br /> Object obj = inv.invokeFunction("getMax", null);
//鎵撳嵃緇撴灉
System.out.println(obj);
}catch(Exception ex){
ex.printStackTrace();
}
}
]]>
褰揝et瑕佹坊鍔犳柊鐨勫厓绱犳椂錛屽厛璋冪敤榪欎釜鍏冪礌鐨刪ashCode鏂規硶錛屽氨涓涓嬪瓙鑳藉畾浣嶅埌瀹冨簲璇ユ斁緗殑鐗╃悊浣嶇疆涓娿傚鏋滆繖涓綅緗笂娌℃湁鍏冪礌錛屽畠灝卞彲浠ョ洿鎺ュ瓨鍌ㄥ湪 榪欎釜浣嶇疆涓婏紝涓嶇敤鍐嶈繘琛屼換浣曟瘮杈冧簡錛涘鏋滆繖涓綅緗笂宸茬粡鏈夊厓绱犱簡錛屽氨璋冪敤瀹冪殑equals鏂規硶涓庢柊鍏冪礌榪涜姣旇緝錛岀浉鍚岀殑璇濆氨涓嶅瓨浜嗭紝涓嶇浉鍚屽氨鏁ｅ垪鍏跺畠鐨勫湴鍧銆?br />
鎵浠ヤ袱涓笉equal鐨勫璞★紝鏈夌浉鍚岀殑hash錛屾槸鍙互瀛樿繘Set鐨勩?/strong>
class HashNode {
int id;
public HashNode(int id){
this.id = id;
}
public int hashCode() {
return id;
}
public boolean equals(Object obj) {
return false;
}
}
public class HashTest {
public static void main(String[] args) {
HashNode n1 = new HashNode(1);
HashNode n2 = new HashNode(1);
HashMap map = new HashMap();
map.put(n1, "111");
map.put(n2, "222");
System.out.println(n1.equals(n2));
System.out.println(n1.hashCode() == n2.hashCode());
System.out.println(map.keySet().size());
}
}
]]>
MVC綆楁槸涓浜鴻鐑傛帀鐨勪笢瑗夸簡錛孧VP涔熷薄灞¤浜烘彁鍙娿?br /> 鏈澶х殑鍖哄埆鍦ㄥ摢閲屽憿錛熶負浠涔堣鍐嶆紨鍙樹釜MVP鍑烘潵鍛紵
灝卞畾涔変笂鏉ヨ鏈澶х殑鍖哄埆鍦ㄤ簬C鍜孭錛屽氨鏋勬灦涓婃潵璇達紝鏄疺iew灞傚疄鐜扮殑鏂瑰紡涓嶅悓銆?br /> MVC錛歏iew灞傝偐璐熷緢澶т換鍔★紝View鍏寵仈Model錛孷iew鐨勬覆鏌撴槸鐩存帴閫氳繃Model灞傜殑鏁版嵁鏉ョ‘瀹氱殑銆傝繕鏄湁寰堝涓氬姟閫昏緫鍦╒iew涓婂畬鎴愩?br /> MVP錛歏iew灞傜殑浠誨姟澶уぇ緙╁噺錛孷iew涓嶅啀鐭ラ亾Model錛孭灞傚畬鎴愪笂闈㈡彁鍒扮殑View灞傚畬鎴愮殑涓氬姟閫昏緫銆?br /> 鎬諱箣涓鍙ヨ瘽MVP閲岋紝View灞傜粷瀵逛笉鑳藉啀璁塊棶Model浜嗭紝
浠諱綍涓縐嶈璁℃ā寮忕殑鍑虹幇緇濆涓嶆槸涓轟簡鍑虹幇鑰屽嚭鐜扮殑銆傛繪槸涓轟簡瑙ｅ喅鐜板疄涓瓨鍦ㄧ殑鏌愪簺鑰佺殑妯″紡鏃犳硶鎴栭毦浠ヨВ鍐崇殑闂鎵嶅嚭鐜扮殑銆?br />
涓轟粈涔堜細鍑虹幇MVP鍛紵
鐪嬬湅瀹㈡埛鎷垮埌涓涓璁＄簿鑹殑MVC鐨勪駭鍝侊紝鍋氫簩嬈″紑鍙戠殑鏃跺欙紝濡傛灉浠栭」鐩凍澶熷ぇ錛岃偗瀹氫細鍙戠幇MVC鐨勫ソ澶勩備換鍔￠泦涓湪Model灞傦紝璁捐濂組odel灞傛暟鎹殑濉厖錛岀畝鍗曠殑瀹炵幇灝卞畬鎴愪簡銆侻VC鐨勬灦鏋勫府浠栬В鍐充簡寰堝闂錛屽ぇ瀹跺緢Happy錛?br /> 褰撶劧瀹㈡埛鐨勯渶姹傛繪槸姘告棤姝㈠鐨勶紝褰撶畝鍗曢渶姹傝婊¤凍鐨勬椂鍊欙紝浠栧張浼氬線楂樺眰嬈″彂灞曪紝涔熻浠栧氨瀹屽叏闇瑕佷笉鍚岀殑View鏉ュ仛鍚屾牱鐨凪odel鐨勫睍紺?姣斿涓涓湪JSP錛屼竴涓湪Swing鎴栬匒ndroid涓?錛屽湪榪欎釜鏃跺欙紝紼嶅井鎯充笅錛屼粬灝卞彂鐜頒粬瑕佸仛鐨勪換鍔″紑濮嬪彉鐨勫緢澶т簡銆侻odel灞傜殑鏁版嵁綰典嬌鍙互鍏變韓錛屼簨浠舵帶鍒?杞彂)涔熻兘錛岃孷iew灞傛棤璁哄浣曟槸閫冧笉浜嗕簡銆備簬鏄疻eb紼嬪簭鍛樼‖鐫澶寸毊涔熻瀛wing錛孲wing鐨勭▼搴忓憳閮侀椃鐨勫JSP銆?br /> 璇曟兂榪欎釜鏃跺欏鏋滄湁涓漢錛岃兘鎶婇櫡鍦╒iew涓婄殑涓婁竾琛宑ode錛屾媺鍒頒竴涓嵆鑳借仈緋誨埌Model錛屽張鑳借仈緋誨埌View鐨勫眰嬈′笂錛岄偅鐪熺殑瑕佹劅璋㈣媿澶╁ぇ鍦頒簡銆?br />
MVP鎴戞兂搴旇灝辨槸鍦ㄨ繖涓椂鍊欏嚭鐜扮殑銆傚畠澶勭悊鎵鏈塚iew鍜孧odel涔嬮棿鐨勬秷鎭紶閫掞紝鏁版嵁鏇存柊錛屼氦浜掓搷浣溿傛瘮濡備粠Swing鐨凾extField閲岃緭鍏ヤ釜瀛楁淇℃伅錛屽拰浠嶫SP閲岀殑Form閲岃緭鍏ヨ繖涓瓧孌典俊鎭紝澶勭悊鐨勬祦紼嬪簲璇ユ槸鍙互鍏變韓榪欐浠ｇ爜鐨勩傚綋鐒惰繖涓椂鍊欙紝涓轟簡瑙ｅ喅涓嶅悓View涓婄殑涓浜涚壒孌婃儏鍐碉紝鍙互浣跨敤閫傞厤鍣ㄦā寮忥紝鏉ュ鐞嗗涓猇iew鐨勭▼搴忚璁￠棶棰樸?br />
璁捐妯″紡娌℃湁濂藉潖涔嬪垎錛屽彧鏈夊悎涓嶅悎閫傘備綘鐨勪駭鍝佸鏋滃彧闇瑕佽緭鍏ヤ釜A榪斿洖涓狟錛屾病鏈夊鉤鍙板緩璁紝娌℃湁緋葷粺鍗囩駭錛岄偅灝卞繕浜嗘墍鏈夌殑璁捐妯″紡錛岃蛋閭ｆ潯鏈蹇疄鐜扮殑璺惂銆?br />
]]>
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/*
* show the arthimetic character of '<<' '>>' '>>>'
*/
public class TestArithmetic {
聽聽 public TestArithmetic() {
聽聽 }
聽聽
聽聽 public聽聽 static void聽聽 main(String [] args){
聽聽聽聽 int minus = -10;
聽聽聽聽 System.out.println(" Binary of -10 is " + Integer.toBinaryString(minus));
聽聽聽聽 System.out.println(" Arthimetic minus by -10 << 2 = " +
(minus<<2) + " Binary is " +
Integer.toBinaryString(minus<<2));
聽聽聽聽 System.out.println(" Arthimetic minus by -10 >> 2 = " +
(minus>>2) + " Binary is " +
Integer.toBinaryString(minus>>2));
聽聽聽聽 System.out.println(" Arthimetic minus by -10 >>>2 =聽聽 " +
(minus >>> 2) + " Binary is " +
Integer.toBinaryString(minus>>>2)
聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽 + ",length is " + Integer.toBinaryString(minus>>>2).length());
聽聽聽聽
聽聽聽聽 int plus = 10;
聽聽聽聽 System.out.println(" Binary of 10 is " + Integer.toBinaryString(plus));
聽聽聽聽 System.out.println(" Arthimetic minus by 10 << 2 = " +
(plus<<2)+ "Binary is " + Integer.toBinaryString(plus<<2));
聽聽聽聽 System.out.println(" Arthimetic minus by 10 >> 2 = " +
(plus>>2)+ "Binary is "+ Integer.toBinaryString(plus>>2));
聽聽聽聽 System.out.println(" Arthimetic minus by 10 >>>2 =聽聽 " +
(plus >>> 2)+ "Binary is "+ Integer.toBinaryString(plus
>>> 2));
聽聽 }
琛ュ厖鐭ヨ瘑錛氭暟鍊肩殑琛ョ爜琛ㄧず涔熷垎涓ょ鎯呭喌錛?
錛?錛夋鏁扮殑琛ョ爜錛氫笌鍘熺爜鐩稿悓銆?
渚嬪錛?9鐨勮ˉ鐮佹槸00001001銆?
錛?錛夎礋鏁扮殑琛ョ爜錛氱鍙蜂綅涓?錛屽叾浣欎綅涓鴻鏁扮粷瀵瑰肩殑鍘熺爜鎸変綅鍙栧弽錛涚劧鍚庢暣涓暟鍔?銆?
渚嬪錛?7鐨勮ˉ鐮侊細鍥犱負鏄礋鏁幫紝鍒欑鍙蜂綅涓衡?鈥?鏁翠釜涓?0000111錛涘叾浣?浣嶄負-7鐨勭粷瀵瑰?7鐨勫師鐮?000111鎸変綅鍙栧弽涓?111000錛涘啀鍔?錛屾墍浠?7鐨勮ˉ鐮佹槸11111001銆?
宸茬煡涓涓暟鐨勮ˉ鐮侊紝姹傚師鐮佺殑鎿嶄綔鍒嗕袱縐嶆儏鍐碉細
錛?錛夊鏋滆ˉ鐮佺殑絎﹀彿浣嶄負鈥?鈥濓紝琛ㄧず鏄竴涓鏁幫紝鎵浠ヨˉ鐮佸氨鏄鏁扮殑鍘熺爜銆?
錛?錛夊鏋滆ˉ鐮佺殑絎﹀彿浣嶄負鈥?鈥濓紝琛ㄧず鏄竴涓礋鏁幫紝姹傚師鐮佺殑鎿嶄綔鍙互鏄細絎﹀彿浣嶄負1錛屽叾浣欏悇浣嶅彇鍙嶏紝鐒跺悗鍐嶆暣涓暟鍔?銆?
渚嬪錛屽凡鐭ヤ竴涓ˉ鐮佷負11111001錛屽垯鍘熺爜鏄?0000111錛?7錛夛細鍥犱負絎﹀彿浣嶄負鈥?鈥濓紝琛ㄧず鏄竴涓礋鏁幫紝鎵浠ヨ浣嶄笉鍙橈紝浠嶄負鈥?鈥濓紱鍏朵綑7浣?111001鍙栧弽鍚庝負0000110錛涘啀鍔?錛屾墍浠ユ槸10000111銆?/p>
]]>
public class MethodDemo {
/**
* @param args
*/
public static void main(String[] args) {
MethodDemo demo = new MethodDemo();
Integer i = Integer.valueOf(1);
demo.add(i);
System.out.println("i:" + i);
String s = "ss";
demo.stringchange(s);
System.out.println("s:" + s);
Person per = new Person();
per.name = "per1";
demo.setDate(per);System.out.println("per:" + per.getName());
}
//鍩烘湰綾誨瀷鍙樹笉浜?br />
public void add(int i) {
i++;
}
/***
* 鍑℃槸鍦ㄥ紩鐢ㄤ腑鍑虹幇淇敼寮曠敤鐨勮祴鍊艱鍙ワ紝
* 淇敼閮藉彉鎴愭棤鏁?br />
* @param i
*/
//鎯充慨鏀瑰紩鐢紝涓嶈
public void add(Integer i) {
int j = i.intValue();
i = Integer.valueOf(j++);//i鐨勫師寮曠敤宸茬粡涓㈠け浜?br />
}
//鎯充慨鏀瑰紩鐢紝涓嶈
public void stringchange(String s){
s = "stringchange";
}
public void setDate(Person per){
Person per2 = new Person();
per2.setName("per2Name");
per = per2;//per鐨勫師寮曠敤宸茬粡涓㈠け浜?/span>,榪欎釜浼拌寰堝浜轟細鍑洪敊
per.setName("name");
}
}
class Person {
String name ;
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
}
]]>