單元素的枚舉類型實現單例

/**
 * Created by kaizige on 2017/7/4.
 */
public enum  Singleton {
    INSTANCE("yangkai");
    private  String name;
     Singleton(String name){
        this.name = name;
    }

    public String getName() {
        return name;
    }

    public static void main(String[] args) {
        String name=Singleton.INSTANCE.getName();
        System.out.println(name);
    }
}