package test;
/**
* 饿汉式单列模式
* @author lenovo
*
*/
public class Singleton1 {
private static Singleton1 Singleton1=new Singleton1();
private Singleton1(){
}
public static Singleton1 getSingleton1(){
return Singleton1;
}
}
package test;
/**
* 此单例模式可以应用于多线程
* @author lenovo
*
*/
public class Singleton2 {
private static Singleton2 singleton2=null;
private Singleton2(){}
public static Singleton2 getSingleton2(){
if(singleton2==null){
synchronized (Singleton2.class) {
if(singleton2==null){
singleton2=new Singleton2();
}
}
}
return singleton2;
}
}
