/***
*饿汉式|
/********
class Singleton{
public static Singleton s = new Singleton();
private Singleton(){}
public static Singleton getInstance(){
return s;
}
}
/***
*懒汉式|
/********
class Singleton2{
private static Singleton2 s;
private Singleton2(){}
public static Singleton2 getInstance(){
if( s == null){
s = new Singleton2();
}return s;
}
}
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