scoresect.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 ScoreSect extends JFrame implements ActionListener{
   static JLabel jlScoreSect,jlCount,jlPercentage;
   static JLabel[] ScoreSect=new JLabel[5];
   static JTextField[] jtCount=new JTextField[10];
   static JButton jbExit;
   static int[] count={0,0,0,0,0};
   static int k=0,m=0,n=0,ccount=0;
    static String[] line;
    static String[] class1;
    static String[] scourse;
    static String[] score;
    static double sc;
   
   public ScoreSect(int[] count,int m){
        JPanel jpanel1=new JPanel();
        JPanel jpanel2=new JPanel();
        jbExit=new JButton("退出");
        jpanel1.setLayout(new GridLayout(0,3));
        jlScoreSect=new JLabel("分数段");
        jlCount=new JLabel("人数");
        jlPercentage=new JLabel("百分比(%)");
        ScoreSect[0]=new JLabel("   0--59   ");
        ScoreSect[1]=new JLabel("   60--69  ");
        ScoreSect[2]=new JLabel("   70--79  ");
        ScoreSect[3]=new JLabel("   80--89  ");
        ScoreSect[4]=new JLabel("   90--100 ");
        jpanel2.add(jbExit);
        jbExit.addActionListener(this);
        jpanel1.add(jlScoreSect);
        jpanel1.add(jlCount);
        jpanel1.add(jlPercentage);
        
        for(int i=0,j=0;j<5;i=i+2,j++)
        {  
            String s= String.valueOf(count[j]) ;
            String sp= String.valueOf((int)(count[j]*100*100/m)/100.0);
            jtCount[i]=new JTextField(s);
            jtCount[i+1]=new JTextField(sp);
            jpanel1.add(ScoreSect[j]);
            jpanel1.add(jtCount[i]);
            jpanel1.add(jtCount[i+1]);
        } 
        getContentPane().add(jpanel1,BorderLayout.CENTER);
        getContentPane().add(jpanel2,BorderLayout.SOUTH);
        this.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
        this.setTitle("分数段分析"); 
        this.pack();
        this.setLocation(530,300);
        this.setVisible(true);
         k=0;m=0;n=0;ccount=0;
         for(int i=0;i<5;i++)
                  count[i]=0;
    }
   public ScoreSect(String Class,String course){
      try{
           BufferedReader input =new BufferedReader(new FileReader("G:\\Score\\score.txt"));
     
     String L=input.readLine();
     StringTokenizer tokenizer=new StringTokenizer(L,"*");
     m=tokenizer.countTokens();
     line=new String[m];
     class1=new String[m/7];
     scourse=new String[m/7];
     score=new String[m/7];
     for(int i=0;tokenizer.hasMoreTokens();i++)
     { 
         line[i]=tokenizer.nextToken();
     }
    for(int j=0,h=1;j<m;j++,h++)
                     {
                         if(h==1){
                             class1[n]=line[j];
                             scourse[n]=line[j+1];
                             score[n]=line[j+4];
                             n++;  
                         }
                         if(h==7){
                             h=0;
                         }
                     }
         
          String s1,s2;
          StringTokenizer scanner1=new StringTokenizer(Class);
          StringTokenizer scanner2=new StringTokenizer(course);
          s1=scanner1.nextToken();
          s2=scanner2.nextToken(); 
          for(int d=0;d<m/7;d++)
          { 
              if((class1[d].equals(s1))&&(scourse[d].equals(s2)))
              {
               sc=Double.parseDouble(score[d]);
               if(sc<=59&&sc>=0)
                   count[0]++;
               else if(sc<=69&&sc>=60)
                   count[1]++;
               else if(sc<=79&&sc>=70)
                   count[2]++;
               else if(sc<=89&&sc>=80)
                   count[3]++;
               else if(sc<=100&&sc>=90)
                   count[4]++;
               k++;
           }  
          }
           input.close();
           new ScoreSect(count,k);
         
      }
      catch(Exception es){
           k=0;m=0;n=0;ccount=0;
           for(int i=0;i<5;i++)
                  count[i]=0;
          JOptionPane.showMessageDialog(null, "分析失败");
      }
   }
  
    public void actionPerformed(ActionEvent e)
    {
        if(e.getSource()==jbExit)
        {
             this.setVisible(false);
              k=0;m=0;n=0;ccount=0;
              for(int i=0;i<5;i++)
                  count[i]=0;
                  
        }
            
       
    }
}