java输入一个学生信息,形成一个文件,再读出并显示在屏幕上

//输入一个学生信息,形成一个文件,再读出并显示在屏幕上
package classwork10;

import java.io.FileNotFoundException;
import java.io.PrintWriter;
import java.util.Scanner;

public class student_7 {
       private String name;
       private String id;
       private double score;
    public student_7() {
        Scanner in=new Scanner(System.in);
        System.out.println("请输入学生姓名,学号和成绩:");
        String name1=in.next();
        String id1=in.next();
        double score1=in.nextDouble();
        set(name1, id1,score1);
    }
    public void set(String name, String id, double score) {
        this.name = name;
        this.id = id;
        this.score = score;
    }
    @Override
    public String toString() {
        return "name=" + name + ", id=" + id + ", score=" + score;
    }
    public void write() throws FileNotFoundException {
        PrintWriter pw=new PrintWriter("d:/xyz.txt");
        pw.println(toString());
        pw.close();
    }
    public void output() {
        System.out.println(toString());
    }
}




package classwork10;

import java.io.FileNotFoundException;

public class student_7testt {

    public static void main(String[] args) throws FileNotFoundException {
        student_7 a=new student_7();
        a.output();
        a.write();
    }

}