testpeople_2.java

不错..................是java的源码

class People {
	String Name;
	String Num="01";
	String Sex;
	int Ages;
	public String ShowInfo() {
		return("姓名:"+Name+" 性别:"+Sex+" 年龄:"+Ages);
	}
}
class Student extends People {
	String Num;
	String ClassNo;
	public String ShowInfo() {
		return("学号:"+Num+super.Num+" "+super.ShowInfo()+" 班号:"+ClassNo);
	}
}
class Teacher extends People {
	String Principalship;
	String Department;
	public String ShowInfo() {
		return(super.ShowInfo()+" 职务:"+Principalship+" 部门:"+Department);
	}
}
public class TestPeople_2 {
	public static void main(String[] args) {
		Student NewPeople=new Student();
		NewPeople.Name="宋菘";
		NewPeople.Num="1001";
		NewPeople.Sex="男";
		NewPeople.Ages=36;
		NewPeople.ClassNo="计算001";
		System.out.println(NewPeople.ShowInfo());
	}
}