饿汉式 public class Single { private Single(){ } private static Single single =new Single ();
public static Single getInstance() { return single; } } 懒汉式 public class Single { private static Single single=null; private Single(){ } public static Single getInstance() { if(single==null) single=new Single(); return single; }
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private Single single = new Single();
private single(){
}
public Single getInstance(){
this.single;
}
}
饿汉式
public class Single {
private static Single single =new Single ();
public static Single getInstance() {
return single;
}
}
懒汉式
public class Single {
private static Single single=null;
public static Single getInstance() {
if(single==null)
single=new Single();
return single;
}
}
public class Single {
private Single(){ }
private static Single single =new Single ();
public static Single getInstance() {
return single;
}
}
懒汉式
public class Single {
private static Single single=null;
private Single(){ }
public static Single getInstance() {
if(single==null)
single=new Single();
return single;
}
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