《Java实战开发经典》第六章6.3

package xiti6;
class Person{
String name;
String addr;
char sex;
int age;
public Person(String name,String addr,char sex,int age){
this.name=name;
this.addr=addr;
this.sex=sex;
this.age=age;
}
public Person(String name,String addr){
this.name=name;
this.addr=addr;
}
public Person(){

}
public void print(){
System.out.println("名字: "+this.name+"地址:"+this.addr+"性别:"+this.sex+"年龄:"+this.age);
}
}
class Student extends Person{
int math;
int english;
public Student(String name,String addr,char sex,int age,int math,int english){
this.name=name;
this.addr=addr;
this.sex=sex;
this.age=age;
this.math=math;
this.english=english;
}
public Student(int math,int english){
this.math=math;
this.english=english;
}
public Student(){

}
public void print(){
System.out.println("名字: "+this.name+"地址:"+this.addr+"性别:"+this.sex+"年龄:"+this.age+"数学成绩:"+this.math+"英语成绩:"+this.english);
}
}
public class Third {
public static void main(String[] args) {
Person per=new Person("小李子","点将台路40号",'m',20);
per.print();
Student stu=new Student("小李子","点将台路40号",'m',20,100,150);
stu.print();
}

}