super（new Something（...））这个构造错了吗？(super(new Something(…)) is this construct wrong?)

 我正在看一些java代码，其中类的构造函数如下所示： 
 
public class X extends ... {
    X(String s) {
       super(new Y(s)); 
    }
}
 
 这总是错的吗？ 换句话说，它是在构造函数中创建一个对象，将它传递给'super'总是错误的吗？ 如果是这样的话？ 
 
 编辑：为什么我认为这可能是错的？ 
 
 在创建类X时，jvm做的第一件事就是在超类上调用super。 （即使暗示'super（）'即可完成）你只能进行有限数量的操作，例如super(new Y(s)); 也许用三元运算符super( s != null ? new Y(s) : new Y() )调用super( s != null ? new Y(s) : new Y() )但是你不能再添加任何逻辑因为必须先调用super！ 这就是为什么我认为这是错误的 

I am looking at some java code where the constructor of a class looks like this:
 
public class X extends ... {
    X(String s) {
       super(new Y(s)); 
    }
}
 
is that always wrong ? in other words is it creating an object in the constructor to pass it to 'super' always wrong ? if so why ?
 
EDIT: Why do I think it might be wrong ?
 
when creating a class X the first thing the jvm does is to call super on its super class. (that's done even if 'super()' is implied) you can only do a limited amount of operations such as super(new Y(s)); maybe a call to super with the ternary operator super( s != null ? new Y(s) : new Y() ) but you would not be able to put any more logic because super must be called first !!! That's why I think it's wrong

原文：https://stackoverflow.com/questions/15229941