java写法小结

来源：互联网发布：ubuntu安装最新wine 编辑：程序博客网时间：2024/05/16 11:28

一：

public class Singleton {    private Singleton() {    }    private static class SingletonHolder {        public final static Singleton SINGLETON = new Singleton();    }    public final static Singleton getSingleton() {        return SingletonHolder.SINGLETON;    }}

Singleton SINGLETON = new Singleton();采用的是递归写法

二：

匿名类的使用：

 BroadcastUtil.registerReceiver(this, new BroadcastUtil.IReceiver() {            @Override            public void onReceive(Context ctx, Intent intent) {                Log.v("-->", "Bingo");            }        }, BroadcastFlag);

等价于：

BroadcastUtil.IReceiver iReceiver = new BroadcastUtil.IReceiver() {            @Override            public void onReceive(Context ctx, Intent intent) {                Log.v("-->", "Bingo");            }        };BroadcastUtil.registerReceiver(this, iReceiver, BroadcastFlag);

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