分享程序员开发的那些事...
更新时间：2022-09-19 18:59:36
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package com.wetuo.javabase;
public class SingletonDemo {
private static SingletonDemo instance = new SingletonDemo();
private SingletonDemo() {}
public static SingletonDemo getInstance() {
return instance;
}//充血模式
}方法二public class SingletonDemo {
private static SingletonDemo instance = null;
private SingletonDemo() {}
public static synchronized SingletonDemo getInstance() {//保证只new一次
if(null==instance)
return new SingletonDemo();
else
return instance;
}//饥饿模式
} |