java之方法的重写方法的重写：
1、在子类中可以根据需要对从基类中继承来的方法进行重写。
2、重写的方法和被重写的方法必须具有相同方法名称、参数列表和返回类型。
3、重写方法不能使用比被重写的方法更严格的访问权限。
程序code:
class Person{ PRivate int age; private String name; public void setAge(int age){ this.age = age; } public void setName(String name){ this.name = name; } public int getAge(){ return age; } public String getName(){ return name; } public String getInfo(){ return "Name is:"+name+",Age is "+age; }}class Student extends Person{ private String school; public void setSchool(String school){ this.school = school; } public String getSchool(){ return school; } public String getInfo(){ return "Name is:"+getName()+",Age is "+getAge()+",School is:"+school; }}public class TestOverRide{ public static void main (String args[]){ Student student = new Student(); Person person = new Person(); person.setAge(1000); person.setName("lili"); student.setAge(23); student.setName("vic"); student.setSchool("shnu"); System.out.println(person.getInfo()); System.out.println(student.getInfo()); }}
执行结果：