package com.heima.single;
public class DemoSingle {
public static void main(String[] args) {
}
}
//饿汉式
class Single {
private static final Single single=new Single();
private Single(){
}
public Single getIntance(){
return single;
}
}
//懒汉式
class Single2 {
private static Single2 single;
private Single2(){
}
public Single2 getIntance(){
if(single==null){
single=new Single2();
}
return single;
}
}
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