单例模式

最新推荐文章于 2025-05-23 19:33:43 发布

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/**
 * Created by chao on 2017/9/4.
 * 懒汉式
 */
public class Singleton {
    private static Singleton instrance;
    private Singleton(){}
    public static synchronized Singleton getInstrance(){
        if (instrance==null){
             instrance = new Singleton();
        }
        return instrance;
    }
}
/**
 * Created by chao on 2017/9/4.
 * 恶汉式
 */
public class Singleton{
    private static Singleton instrance = new Singleton();
    private Singleton(){}
    public static Singleton getInstrance(){
        return instrance;
    }
}