student.java

数据结构与算法

package dsa.element;


public class Student extends People{
	private String sId;	//学号
	//Constructor
	public Student() {
		this("","",""); 
	}
	public Student(String name,String id,String sId){
		super(name,id);
		this.sId = sId;
	}

	public void sayHello(){
		super.sayHello();
		System.out.println("I am a student of department of computer science.");
	}
	
	//get & set method
	public String getSId(){
		return this.sId;
	}
	public void setSId(String sId){
		this.sId = sId;
	}
}