单例模式

public class Singleton {
     private volatile static Singleton uniqueInstance;
    private Singleton();
public static Singleton getInstance(){
   if(uniqueInstance==null){

<span style="white-space:pre">	</span>synchronized(Singleton.class){
<span style="white-space:pre">	</span>if(uniqueInstance== null){

<span style="white-space:pre">		</span>uniqueInstance = new Singleton();

}

{

}

return uniqueInstance;

}
    


}




}