Java中的重写例子

class Person{
	public String getName() {
		return name;
	}
	public void setName(String name) {
		this.name = name;
	}
	public int getAge() {
		return age;
	}
	public void setAge(int age) {
		this.age = age;
	}
	public Person(String name, int age) {
		this.name = name;
		this.age = age;
	}
	String name ;
	int age;
	public void ShowInfo(){
		System.out.println("name:"+name+"and age:"+age);
	}
	
}

class Student extends Person{
	public String getSchool() {
		return school;
	}
	public void setSchool(String school) {
		this.school = school;
	}
	public Student(String name, int age, String school) {
		super(name, age);
		this.school = school;
	}
	String school;
	public void ShowInfo(){
		System.out.println("name:"+name+"and age:"+age+" and school:"+school);
	}
	
}
public class TestOverWrite {

	/**
	 * @试一试重写
	 */
	public static void main(String[] args) {
		Person aPerson = new Person("zhaoguohao", 20);
		aPerson.ShowInfo();
		Student aStudent = new Student("zhaoguohao",20,"JLU");
		aStudent.ShowInfo();

	}

}

输出结果：
name:zhaoguohaoand age:20
name:zhaoguohaoand age:20 and school:JLU
父类和子类拥有相同的函数ShowInfo，当子类重写之后，子类用的就是重写的方法了。