用java程序实现一个单例类？_迅雷笔试题

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MyGoodHelper

public class Singleton {  
      private volatile static Singleton singleton;  
      
      private Singleton (){}   
      
      public static Singleton getSingleton() {  
      if (singleton == null) {  
          synchronized (Singleton.class) {  
          if (singleton == null) {  
              singleton = new Singleton();  
           }  
         }  
     }  
     return singleton;  
  }

双重检查锁定

编辑于 2015-02-04 16:12:54 回复(0)

牛客979526号

class Singel{

private Singel(){}

public static Single getInstance(){

return next.singel;

}

static class next{

private next(){}

public static Singel singel=new Singel();

}

发表于 2016-06-21 16:59:48 回复(0)

Hanjx

public class Connect {

private Connect c;

private Connect() {}

public static Connect getConnect() {

if(c == null)

c = new Connect();

return c;

}

编辑于 2015-04-01 16:03:43 回复(0)

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用java程序实现一个单例类？

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