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  • 单例模式(懒汉式 与 饿汉式)

    懒汉式:

    public class SingleTon{

      private static SingleTon singleTon;

      private SingleTon(){}

      public static SingleTon getSingleTon(){

        if(singleTon != null){

          synchronized(SingleTon.class){

            if(singleTon != null){

              singleTon = new SingleTon();

            }

          }

        }

        return singleTon;

      }

    }

    饿汉式:

    public class SingleTon{

      private static SingleTon singleTon = new SingleTon();

      private SingleTon(){}

      public static SingleTon getSingleTon(){

        return singleTon;

      }

    }

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  • 原文地址:https://www.cnblogs.com/erfsfj-dbc/p/9926063.html
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