Java - 枚举(Enum)
public class TestSeason1 {
public static void main(String[] args) {
Season1 spring = Season1.SPRING;
System.out.println(spring);
spring.show();
System.out.println(spring.getSeasonName());
System.out.println();
//1.values()
Season1[] seasons = Season1.values();
for(int i = 0;i < seasons.length;i++){
System.out.println(seasons[i]);
}
//2.valueOf(String name):要求传入的形参name是枚举类对象的名字。
//否则，报java.lang.IllegalArgumentException异常
String str = "WINTER";
Season1 sea = Season1.valueOf(str);
System.out.println(sea);
System.out.println();
Thread.State[] states = Thread.State.values();
for(int i = 0;i < states.length;i++){
System.out.println(states[i]);
}
sea.show();
}
}
interface Info{
void show();
}
//枚举类
enum Season1 implements Info{
SPRING("spring", "春暖花开"){
public void show(){
System.out.println("春天在哪里？");
}
},
SUMMER("summer", "夏日炎炎"){
public void show(){
System.out.println("生如夏花");
}
},
AUTUMN("autumn", "秋高气爽"){
public void show(){
System.out.println("秋天是用来分手的季节");
}
},
WINTER("winter", "白雪皑皑"){
public void show(){
System.out.println("冬天里的一把火");
}
};
private final String seasonName;
private final String seasonDesc;
private Season1(String seasonName,String seasonDesc){
this.seasonName = seasonName;
this.seasonDesc = seasonDesc;
}
public String getSeasonName() {
return seasonName;
}
public String getSeasonDesc() {
return seasonDesc;
}
@Override
public String toString() {
return "Season [seasonName=" + seasonName + ", seasonDesc="
+ seasonDesc + "]";
}
// public void show(){
// System.out.println("这是一个季节");
// }
}
