JavaDemo_0831
class Person{
private String name;
private String addr;
private char sex;
private int age;
public Person(){}
public Person(String name,char sex)
{
this.name=name;
this.sex=sex;
}
public Person(String name,String addr,char sex,int age)
{
this(name,sex); //调用方法时，方法内不写类型
this.addr=addr;
this.age=age;
}
//四个变量的setter、getter方法略
public String getInfo()
{
return "name="+this.name+" addr="+this.addr+" sex="+this.sex+" age="+this.age;
}
}
class Student extends Person
{
private double math;
private double english;
public Student(){}
public Student(double math,double english)
{
this.english=english;
this.math=math;
}
public Student(String name,String addr,char sex,int age,double math,double english)
{
super(name,addr,sex,age);
this.math=math;
this.english=english;
}
//变量的setter、getter方法略
public String getInfo() //getInfo()方法的覆写/重写
{
return super.getInfo() + " math=" +this.math +" english="+this.english;
}
}
public class JavaDemo_0831_2341
{
public static void main(String[] args)
{
Student student=new Student("张三","北京",'男',18,99L,92L);
System.out.println(student.getInfo());
}
} //子类不能通过super.name=name的方式调用父类的private name变量
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