本文介绍了可以在子类中重写超类中的私有方法吗?的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
可以在Java中覆盖私有方法吗?
如果不是,那么以下代码如何工作?
Can private methods be overridden in Java?If no, then how does the following code work?
class Base{
private void func(){
System.out.println("In Base Class func method !!");
};
}
class Derived extends Base{
public void func(){ // Is this a Method Overriding..????
System.out.println("In Derived Class func method");
}
}
class InheritDemo{
public static void main(String [] args){
Derived d = new Derived();
d.func();
}
}
推荐答案
否,你没有压倒它。您可以尝试使用 @Override
进行标记,或尝试拨打 super.func();
。两者都行不通;他们抛出了编译错误。
No, you are not overriding it. You can check by trying to mark it with @Override
, or by trying to make a call to super.func();
. Both won't work; they throw compiler errors.
此外,请检查一下:
class Base {
private void func(){
System.out.println("In base func method");
};
public void func2() {
System.out.println("func2");
func();
}
}
class Derived extends Base {
public void func(){ // Is this an overriding method?
System.out.println("In Derived Class func method");
}
}
class InheritDemo {
public static void main(String [] args) {
Derived D = new Derived();
D.func2();
}
}
它将打印:
func2
In base func method
当你将 func()
更改为 Base
更改为public,然后它将成为覆盖,并且输出将更改为:
When you change func()
in Base
to public, then it will be an override, and the output will change to:
func2
In Derived Class func method
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