java 小知识提问
飞鱼落雁 2016-12-12 01:04:07 A : Class Soup{
private Soup soup = new Soup();
private Soup(){}
public static Soup makeSoup(){
return soup;
}
}
B : Class Soup{
private Soup(){}
public static Soup makeSoup(){
return new Soup();
}
}
A-这样写是单例模式,让我们都用一个类,但是B这样写有什么优点吗?求大神指点!!!!!!!