package com.lianxi; class Father{ private void f(int i){ System.out.println("父类的私有函数"); } } public class OverrideTest extends Father { int i; private OverrideTest(){ System.out.println("无参的构造函数"); } private OverrideTest(int i){ this.i = i; System.out.println("有参的构造函数"); } //此处private,protected,public都不行,由于重写(覆盖)了父类的私有方法 public static void f(int i){ System.out.println("子类的私有的构造函数"); } public static void main(String[] args) { //构造重载的时候不会发生错误 OverrideTest o = new OverrideTest(3); OverrideTest o1 = new OverrideTest(); int i = 1; f(i); } }
若是去掉public static void f(int i)中的static,则会报如下错误。即在静态函数中不能有非静态方法。java
Exception in thread "main" java.lang.Error: Unresolved compilation problem: Cannot make a static reference to the non-static method f(int) from the type Override at com.test.Override.main(Override.java:33)
若是把f(i)拿到main函数以外,即做为类Override的一个实例方法,则会报如下错误。这个错误就是重写(覆盖)了父类的私有的方法。ide
xception in thread "main" java.lang.Error: Unresolved compilation problem: at com.test.Override.main(Override.java:27)