基於java枚舉類別綜合應用的說明

public static void main(String[] args) {
Trafficlight light = Trafficlight.RED;

System.out.println(light.time);
System.out.println(light.nextLigth());
// ordinal()方法傳回枚舉宣告的順序
System.out.println(light.ordinal());
// values()方法得到所有枚舉類型的一個數組
for(Trafficlight light1:light.values()){
System.out.println(light1.name());
}

// valueOf()方法可以把字串轉換成對應的枚舉對象
System.out.println(light.RED ==light.valueOf("RED"));
}

public enum Trafficlight {
GREEN(30) {

@Override
public Trafficlight nextLigth() {
return RED;
}
},
RED(30) {

@Override
public Trafficlight nextLigth() {
return YELLOW;
}
},
YELLOW(10) {

@Override
public Trafficlight nextLigth() {
return GREEN;
}
};
public abstract Trafficlight nextLigth();

private int time;

// 建構方法
private Trafficlight(int time) {
this.time = time;
}

public int getTime(){
return time;
}

}

}