addidandname.java

学生成绩管理系统：能输入学科

package 学生考试成绩分析程序;

import java.awt.*;
import java.util.*;
import javax.swing.*;
import java.awt.event.*;
import java.io.*;

public class AddIdAndName extends JFrame implements ActionListener
{
    private JButton ok,exit;
    static String  grade,speciality, Class, count;
    JTextField jtCheck=new JTextField("");
    static int i; 
    JTextField[] jtNameAndId;


    public AddIdAndName(String jgrade,String jspeciality,String jClass,String jcount)
    {
        grade=jgrade;
        speciality=jspeciality;
        Class=jClass;
        count=jcount;
        Scanner scanner=new Scanner(count);
        
        try
        {
        i=scanner.nextInt();
                new  AddIdAndName(); 
        }
        catch(Exception e)
        { 
            i=0;
            JOptionPane.showMessageDialog(null, "增加失败");
        }
       }

   
    public AddIdAndName()
    {
        jtNameAndId=new JTextField[i*2];

        for(int j=0;j<i*2;j++)
        {
           
            jtNameAndId[j]=new JTextField(""); 
        }

      JPanel jpLabel=new JPanel();
      JPanel jpButton=new JPanel();
      JPanel jpTextField=new JPanel();
      jpTextField.setLayout(new GridLayout(0,2));
      for(int k=0;k<i*2;k++)
      {
      jpTextField.add(jtNameAndId[k]);
      }

        jpLabel.add(new JLabel( "姓名       "));
        jpLabel.add(new JLabel("  学号"));
        jpButton.add(ok =new JButton("确定"));
        jpButton.add(exit =new JButton("退出"));
        getContentPane().setBackground(Color.WHITE);
        getContentPane().add(jpLabel,BorderLayout.NORTH);
        getContentPane().add(jpButton,BorderLayout.SOUTH);
        getContentPane().add(jpTextField,BorderLayout.CENTER);
       
        ok.addActionListener(this);
        exit.addActionListener(this);
        
        this.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
        this.setTitle("输入姓名和学号 ");
        this.pack();
        this.setLocation(540,100);
        this.setVisible(true);     
        }
    
        public void actionPerformed(ActionEvent e)
        {
        if(e.getSource()==ok)
        {
            
             try
            {
                 BufferedWriter output=new BufferedWriter(new FileWriter("student.txt",true));
        for(int m=0,n=0;m<i*2;m=m+2,n++)
        {
       String name =jtNameAndId[m].getText();
       String ID=jtNameAndId[m+1].getText();
       String check=jtCheck.getText();
     
       if((!grade.equals(check))&&(!speciality.equals(check))&&(!Class.equals(check))&&(!count.equals(check))&&!name.equals(check)&&!ID.equals(check))
       {
           output.write(grade+"*"+speciality+"*"+Class+"*"+count+"*"+name+"*"+ID+"*"); 
           if(m==i*2-2)
           {
           JOptionPane.showMessageDialog(null, "增加成功");
           i=0;
            this.setVisible(false);
           }
       }
       else
       {
         JOptionPane.showMessageDialog(null, "输入错误，请重新输入");
         break;
       }
        }
                 output.close();
             }
             
            catch(Exception k)
            {
                i=0;
                JOptionPane.showMessageDialog(null, "增加失败");
            }
        }
        else if(e.getSource()==exit)
        {
            i=0;
            this.setVisible(false);
        }
        }  
}