怎样实现这个java程序呢？

我想要把数据写入新建的stu.txt中。该怎样改一下主函数呢？各位大神可以帮忙写个范例吗？

package test0601;public class Student { private String sname; private long sno; private int score1; private int score2; public String getSname() { return sname; } public void setSname(String sname) { this.sname = sname; } public long getSno() { return sno; } public void setSno(long sno) { this.sno = sno; } public int getScore1() { return score1; } public void setScore1(int score1) { this.score1 = score1; } public int getScore2() { return score2; } public void setScore2(int score2) { this.score2 = score2; } }

import java.util.*;public class test { public static void main(String[] args) { Student[] stu = new Student[5]; Scanner s = new Scanner(System.in); for(int i=0;i<5;i++) { stu[i] = new Student(); System.out.printf("请输入第%d名学生姓名： ", i+1); stu[i].setSname(s.nextLine()); System.out.printf("请输入第%d名学生学号： ", i+1); stu[i].setSno(s.nextLong()); System.out.printf("请输入第%d名学生高数成绩： ", i+1); stu[i].setScore1(s.nextInt()); System.out.printf("请输入第%d名学生物理成绩： ", i+1); stu[i].setScore2(s.nextInt()); s.nextLine(); } System.out.printf("所有学生信息：\n"); for(int i=0;i<5;i++) { System.out.printf("%20s%20s%20s%20s\n", "姓名", "学号", "高数", "物理"); System.out.printf("%10s%10s%10s%10s\n", stu[i].getSname(), stu[i].getSno(), stu[i].getScore1(), stu[i].getScore2()); } }}

用输入输出流，写入txt文件，也就是IO的File

public static void main(String[] args) throws IOException {
Student[] stu = new Student[5];
Scanner s = new Scanner(System.in);

    for(int i=0;i<1;i++) 
    { 
        stu[i] = new Student(); 

        System.out.printf("请输入第%d名学生姓名： ", i+1); 
        stu[i].setSname(s.nextLine());
        System.out.printf("请输入第%d名学生学号： ", i+1); 
        stu[i].setSno(s.nextLong());
        System.out.printf("请输入第%d名学生高数成绩： ", i+1); 
        stu[i].setScore1(s.nextInt()); 
        System.out.printf("请输入第%d名学生物理成绩： ", i+1); 
        stu[i].setScore2(s.nextInt()); 

        s.nextLine(); 

    } 

    File aFile = new File("D:/work/stu6.txt");
    FileWriter aWriter = new FileWriter(aFile,true);
    if(aFile.exists())
    {
        aFile.delete();
    }
    for(int i = 0;i<1;i++)
    {
        StringBuffer aBuffer = new StringBuffer();
        String aString = aBuffer.append( stu[i].getSname()).append(Long.toString(stu[i].getSno())).append(Integer.toString(stu[i].getScore1())).append(Integer.toString(stu[i].getScore2())).toString();
        System.out.println(aString);            
        aWriter.write(aString);
        aWriter.flush();
        aWriter.close();
    }       

        System.out.printf("所有学生信息：\n"); 

    for(int i=0;i<1;i++) 
    { 
        System.out.printf("%20s%20s%20s%20s\n", "姓名", "学号", "高数", "物理"); 
        System.out.printf("%10s%10s%10s%10s\n", stu[i].getSname(), stu[i].getSno(), stu[i].getScore1(), stu[i].getScore2()); 
        System.out.println(""+stu[i].toString());
    }