java 枚舉，java
枚舉類
public enum
枚舉元素: 枚舉類的一個實例對象
復雜的枚舉：自由的構造方法.
枚舉元素實現一個枚舉類的抽象方法
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package test;
public class TestEnum {
public static void main(String[] args) {
Triffic tr=Triffic.GREEN;
System.out.println(tr+" 下一個燈是: "+tr.nextDeng());
}
public enum Triffic{
RED (400){
@Override
public Triffic nextDeng() {
return GREEN;
}
},
GREEN (200){
@Override
public Triffic nextDeng() {
return YELLOW;
}
},
YELLOW(10) {
@Override
public Triffic nextDeng() {
return RED;
}
};
public abstract Triffic nextDeng();
int time;
private Triffic(int time){
this.time=time;
}
public int getTime() {
return time;
}
public String toString(){
return this.name()+":"+this.time;
}
}
}
