enum 点点啦

 

enum ProgramFlags { showErrors(211), includeFileOutput(0x02), useAlternateProcessor(0x04); private int bit; ProgramFlags(int bitNumber) { bit = bitNumber; } public int getBitNumber() { return(bit); }}public class EnumBitmapExample { public static void main(String args[]) { ProgramFlags flag = ProgramFlags.showErrors; System.out.println("Ãû³Æ£º"+flag+" Ñ¡Öֵıêʶ: " +flag.ordinal() +" ±êʶÃû³Æ" +flag.name()+ " È¡Öµ£º"+flag.getBitNumber()); //Ãû³Æ:showErrors : 0 ????:showErrors ??:211 }}

enum 是一个类，它的常量其实都是对象。都应该大写。

SMALL("S")  括号中间的是属性值。

 

Enum.valueOf(Size.class,"SMALL");

Size[] sizes = Size.values();

Size.SMALL.ordinal(); 返回小标，从0开始.

Size.SMALL.toString();  Size.SMALL.name() 结果都是SMALL