super理解为 父类的

super可以调用属性、方法、构造器

package exer;

public class SuperTest {
	public static void main(String[] args) {
		Student s=new Student();
		s.show();
		s.eat();
	}
}
class Person{
	String name;
	Person(){
		this.name="张三";
	}
	public void eat(){
		System.out.println("人:吃饭");
	}
}
class Student extends Person{
	int score;
	Student(){
		super();
		this.score=100;
	}
	public void eat(){
		System.out.println("学生：吃饭！");
		super.eat();
	}
	public void study(){
		System.out.println("学生：学习");
	}
	public void show(){
		System.out.println(super.name+"的成绩是"+this.score);
	}
}