編程實現Person類，學生類的設計及其繼承關系

（同第六章課後第三題）

class Person{
	private String name;
	private String addr;
	private String sex;
	private int age;
	public Person(){
		System.out.println("聲明一個人類");
	}
	public Person(String name,String addr){
		this();
		this.name=name;
		this.addr=addr;
	}
	public Person(String name,String addr,String sex,int age){
		this(name,addr);
		this.sex=sex;
		this.age=age;
	}
	public String getName(){
		return this.name;
	}
	public String getAddr(){
		return this.addr;
	}
	public String getSex(){
		return this.sex;
	}
	public int getAge(){
		return this.age;
	}
	public void print(){
		System.out.println("人類信息----->姓名:"+this.getName()+";  地址:"+this.getAddr()+";  性別:"+this.getSex()+";  年齡:"+this.getAge());
	}
}
class Student extends Person{
	private float math;
	private float english;
	public Student(){
		super();
		System.out.println("此人是個學生");
	}
	public Student(String name,String addr){
		super(name,addr);
	}
	public Student(String name,String addr,String sex,int age,float math,float english){
		super(name,addr,sex,age);
		this.math=math;
		this.english=english;
	}
	public void print(){
		System.out.println("學生信息----->姓名:"+this.getName()+";  地址:"+this.getAddr()+";  性別:"+this.getSex()+";  年齡:"+this.getAge()+";  數學成績:"+this.math+";  英語成績:"+this.english);
	}
}
public class Person01{
	public static void main(String args[]){
		Person per1=null;
		Person per2=null;
		per1=new Person("張三","河北保定","男",30);
		per2=new Student("張小三","河北保定","男",15,88.0f,77.0f);
		per1.print();
		per2.print();
	}
}

項目三(2)——person與學生