public enum Season { winter, spring, summer, fall }
涓涓猠num鏄畾涔変竴緇勫肩殑瀵硅薄,瀹冨彲浠ュ寘鎷浂涓垨澶氫釜鍊兼垚鍛?瀹冩槸灞炰簬enum綾誨瀷鐨?涓涓猠num瀵硅薄涓笉鍙湁涓や釜鎴栧涓浉鍚岀殑灞炴ф垨鍊?鍦ㄦ涔嬪墠鐨刯ava紼嬪簭鍛樹竴鑸槸 鐢ㄦ帴鍙ｇ殑鏂規硶瀹炵幇鍒椾婦鐨?濡?:
public interface Season {
static winter = 0; static spring = 1; //etc..
}寮曞叆浜唀num鐨刯ava鐨勫垪涓劇殑緙栧啓鏂逛究浜嗚澶?鍙』瀹氫箟涓涓猠num鍨嬬殑瀵硅薄.enum瀵硅薄鐨勫奸兘鍥炶嚜鍔ㄨ幏寰椾竴涓暟瀛楀?浠?寮濮?渚濇閫掑.鐪嬩竴涓瘮杈冪畝鍗曠殑enum瀹炵幇鐨勪緥瀛?EnumDemo.java
/* We can loop over the values we put into the enum using the values() method. Note that the enum Seasons is compiled into a separate unit, called EnumDemo$Seasons.class */ public class EnumDemo {
/*declare the enum and add values to it. note that, like in C#, we don't use a ; to
end this statement and we use commas to separate the values */ private enum Seasons { winter, spring, summer, fall } //list the values public static void main(String[] args) { for (Seasons s : Seasons.values()){ System.out.println(s); } } }榪愯涓婅堪浠ｇ爜浣犲洖寰楀埌 浠ヤ笅緇撴灉:
winter
spring
summer
fall
Enum鐨勫睘鎬ц皟鐢?
涓嬮潰鐨勪唬鐮佸睍紺轟簡璋冪敤enum瀵硅薄鐨勬柟娉?榪欎篃鏄畠閫氬父鐨勭敤娉?
package net.javagarage.enums; /* File: EnumSwitch.java Purpose: show how to switch against the values in an enum. */ public class EnumSwitch { private enum Color { red, blue, green } //list the values public static void main(String[] args) { //refer to the qualified value doIt(Color.red); } /*note that you switch against the UNQUALIFIED name. that is, "case Color.red:" is a compiler error */ private static void doIt(Color c){ switch (c) { case red: System.out.println("value is " + Color.red); break; case green: System.out.println("value is " + Color.green); break; case blue: System.out.println("value is : " + Color.blue); break; default : System.out.println("default"); } } }DreamFight 2008-12-20 18:03 鍙戣〃璇勮
]]>final鏂規硶鏄湪媧劇敓綾諱腑涓嶈兘琚鐩栫殑鏂規硶,final綾繪槸涓嶈兘琚鐩栫殑綾匯備竴涓被鍙互鍚湁final鏂規硶final綾誨拰final鏂規硶浣跨敤final澹版槑鎶宸inal static綾誨瀷鎴愬憳鍙橀噺銆俿tatic浣垮緱鍙橀噺鍙瓨鍦ㄤ竴涓嫹璐濄俧inal浣垮緱瀹冧笉鑳芥敼鍙樸?
DreamFight 2008-12-16 10:50 鍙戣〃璇勮
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