Java - 方法签名中的C＃new关键字是否等效于Java？ 我如何用Java替换最终方法？

Question

As you maybe know, as Java language perspective all method in C# are final by default (also vice versa, all methods in Java are virtual as C# language perspective).

In C# we can replace final (non-virtual) methods by new keyword ( please see this ). There is not anyway to replace final methods in Java?

Edit 1:

I just want to mention that method replacing is not same with method overriding. Please run this C# code:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace ComapreOverrideWithNew
{
    class Program
    {
        static void Main(string[] args)
        {
            var cat = new Cat();
            cat.PrintNameByNew();
            Console.WriteLine(cat.GetNameByNew());
            cat.PrintNameByOverride();
            Console.WriteLine(cat.GetNameByOverride());
            Console.ReadKey();
        }
    }
    class Animal
    {
        public String GetNameByNew()
        {
            return "Animal";
        }
        public void PrintNameByNew()
        {
            Console.WriteLine(GetNameByNew());
        }

        public virtual String GetNameByOverride()
        {
            return "Animal";
        }
        public void PrintNameByOverride()
        {
            Console.WriteLine(GetNameByOverride());
        }
    }
    class Cat : Animal
    {
        new public String GetNameByNew()
        {
            return "Cat";
        }

        public override String GetNameByOverride()
        {
            return "Cat";
        }
    }
}

For example http://docs.oracle.com/javase/tutorial/java/IandI/final.html is just talking about overriding. Also this code have not any compiler warning on compilation.

Answer 1

您不能用Java替换final方法。

Answer 2

There's no such thing in Java . A final method cannot be overridden.

Answer 3

C＃中的所有new关键字都会抑制编译器警告。

Answer 4

The only way to create a "new" final method in java is if the method is marked private. The following is legal:

public class A  
{
   private final void go(){};
}

class B extends A  
{  
    private final void go() {};
}