单例模式

Posted 2020-07-06 仙人掌的刺

/**
 * Created by hero on 16-4-6.
 */
public class Singleton {
    
    public static Singleton getInstance() {
        return SingletonHolder.singleton;
    }

    private static class SingletonHolder {
        private static Singleton singleton = new Singleton();
    }

    private Singleton() {
    }
}