Java学习的第五十五天

1.例11.1继承学生类

import java.util.Scanner;
import java.util.*;
public class Cjava {
public static void main(String[]args) {
Student1 s1=new Student1();
s1.get_value();
s1.get_value1();
s1.display();
s1.display_1();
    }
}
class Student{
    private int num;private String name;private char sex;
    public void get_value() {
        Scanner s=new Scanner(System.in);
        num=s.nextInt();
        String s2;
        s2=s.next();
        sex=s2.charAt(0);
        Scanner s3=new Scanner(System.in);
        name=s3.nextLine();
        
        
    }
    public void display() {
        System.out.println("num:"+num);
        System.out.println("name:"+name);
        System.out.println("sex:"+sex);
    }
}
class Student1 extends Student{
    private int age;private String addr;
    public void display_1() {
        System.out.println("age:"+age);
        System.out.println("address:"+addr);
    }
    public void get_value1() {
        age=19;addr="shandong";
    }
    
}

 2.写题过程中输入字符和字符串出现了问题，发现定义一个Scanner后输入不同的字符串需要再定义。

3.明天继续写例题