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

public class AddScore extends JFrame implements ActionListener{
  
    JLabel jlName=null,jlID=null,jlData=null,jlCount=null;
    JTextField jtData=null,jtCount=null;
    JButton jbCancel=null,jbok=null;
    static JTextField[] jtScore=new JTextField[40];
    static  int count=0;
    static  String[] name=new String[40];
    static  String[] number=new String[40];
    static String sClass=null,sCourse=null;
    String  data;
    static String Count;
    static String Anumber,Aname;
    static String sscore;
     JTextField jtCheck=new JTextField("");
    String check=jtCheck.getText();
    public AddScore(){
 
      JPanel jpLabel=new JPanel();
      JPanel jpLAB=new JPanel();
      JPanel jpButton=new JPanel();
      JPanel jpTextField=new JPanel();
      
      jpTextField.setLayout(new GridLayout(0,3));
      jpLabel.setLayout(new GridLayout(0,4));
      jpLAB.setLayout(new GridLayout(2,1));
      
      jpTextField.add(new JLabel( "     学号    "));
      jpTextField.add(new JLabel("      姓名    "));
      jpTextField.add(new JLabel("      成绩    "));
     
 for(int i=0;i<count;i++)
        {
            jpTextField.add(new JTextField(number[i]));
            jpTextField.add(new JTextField(name[i]));
            jpTextField.add(jtScore[i]=new JTextField(""));
        }
        jpLabel.add(new JLabel("考试日期"));
        jpLabel.add(jtData=new JTextField(""));
        jpLabel.add(new JLabel("考试人数"));
        jpLabel.add(jtCount=new JTextField(""));
        jpButton.add(jbok =new JButton("确定"));
        jpButton.add(jbCancel =new JButton("退出"));
        jpLAB.add(jpLabel);
        jpLAB.add(jpButton);
        
        getContentPane().setBackground(Color.WHITE);
        getContentPane().add(jpLAB,BorderLayout.SOUTH);
        getContentPane().add(jpTextField,BorderLayout.CENTER);
       
        jbok.addActionListener(this);
        jbCancel.addActionListener(this);
        
        this.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
        this.setTitle("综合性实验 ");
        this.pack();
        this.setLocation(450,300);
        this.setVisible(true);    
       
    }
    public AddScore(String Class,String course){
               try
        { 
               
                sClass=Class;
                sCourse=course;
                
       BufferedReader input=new BufferedReader(new FileReader("student.txt"));
       String line=input.readLine();
       StringTokenizer tokenizer=new StringTokenizer(line,"*");
       
       String s2=null;
       String[] student=new String[tokenizer.countTokens()];
       for(int i=0;tokenizer.hasMoreTokens();i++)   
       {
       student[i]=tokenizer.nextToken();
       }
       for(int j=0,k=1;j<student.length;j++,k++)
       {
       if(k==3)
       {
           StringTokenizer scanner2=new StringTokenizer(sClass);
           s2=scanner2.nextToken();
           if((student[j-2]+student[j-1]+student[j]).equals(s2))
           {
                           
               name[count]=student[j+2]; 
               number[count]=student[j+3];
               count++;
                        
           }
       }
      if(k==6)
      {
           k=0;
      }
       }
               input.close(); 
              
               new AddScore();
            }
        catch(Exception ef)
            {
                    JOptionPane.showMessageDialog(null, "增加失败");
            }
        
        
    }

      public void actionPerformed(ActionEvent e)
      {
          if(e.getSource()==jbok)
          {
             
             data=jtData.getText();
             Count=jtCount.getText();

            try
            {
                BufferedWriter output=new   BufferedWriter(new FileWriter("score.txt",true));
          
           for(int m=0;m<count;m++)
        { 
               sscore=jtScore[m].getText();
               Anumber=number[m];
               Aname=name[m];
                if((!sClass.equals(check))&&(!sCourse.equals(check))&&(!Anumber.equals(check))&&(!Aname.equals(check))&&!sscore.equals(check)&&!data.equals(check)&&Count.equals(check))
                {
                    output.write(sClass+"*"+sCourse+"*"+Anumber+"*"+Aname+"*"+sscore+"*"+data+"*"+Count+"*");
                    if(m==count-1)
                    {
                        JOptionPane.showMessageDialog(null, "增加成功"); 
                        count=0; 
                        this.setVisible(false);
                    }
                }
                else
                {
                    JOptionPane.showMessageDialog(null, "输入错误，请重新输入");
               break;
                }
           }
     output.close();
      
            }
            catch(Exception k)
            {
                count=0;
               JOptionPane.showMessageDialog(null, "增加失败");
            }
          }
               
          else if(e.getSource()==jbCancel) 
               count=0;
                 this.setVisible(false);
                  
      }
      
}