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jcheckbox problems (revised)

53 New Member
hello, i am making a hall pass program for my computer programming class. i am having issues with my jcheckboxes. first off. this file reads from a .txt that just has
greg
john
joe
54343
45777
33444

in it. after the user puts in a correct id number, it displays 4 checkboxes to where they want to go. bathroom, office, nurse, and other. once the user clicks one of the checkboxes, it will remove all the stuff from the panel, and add the name of the person and the time they left. the problem i am having is when the user clicks the checkbox , nothing happens. run this for yourself and see for yourself what happens (if you want of course) this is my final assignment for computer programming and i need help bad lol. i have added an itemlistener, that when the checkbox is selected a boolean = true, then in the actionevents, when the "submit" button is pressed, and the id is correct, and the checkbox boolean is true, it removes all the stuff and puts in all the new elements. i want to say that only the bathroom checkbox has the stuff that it should have to make it work , like added the name and time to the second screen after the 4 checkboxes. also i would like to add that this program compiles just fine, just nothing happens when i click the checkboxes. THANKS IN ADVANCED






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  1. import java.awt.*;
  2. import java.awt.event.*;
  3. import javax.swing.*;
  4. import java.util.Calendar;
  5. import java.text.SimpleDateFormat;
  6. import java.lang.Object;
  7. import java.io.*;
  8. import javax.swing.event.*;
  9. import javax.swing.JCheckBox;
  10.  
  11. public class main implements ActionListener
  12. {
  13.         JFrame f1,f2;
  14.         JPanel p1,p2,p3,p4;
  15.         String id,enterstring,name,namestring,idstring,str;
  16.         GP g1;
  17.         JRadioButton bathroom,office,nurse,other;
  18.         JButton submit,returnbutton;
  19.         JTextField idnumber;
  20.         JLabel idprompt,what,time,namelabel;
  21.         boolean show,bathroomb,officeb,nurseb,otherb;
  22.         int idnum,counter;
  23.         SimpleDateFormat sdf;
  24.        String[] namearray; 
  25.        int[] idarray;
  26.        int a,b,idint,enter,teacher;
  27.      public main()
  28.     {   
  29.         teacher = 1234567890;
  30.          bathroomb = false;
  31.          officeb = false;
  32.          nurseb = false;
  33.          otherb = false;
  34.         namearray = new String[3];
  35.         idarray = new int[3];
  36.      sdf = new SimpleDateFormat("yyyy.MM.dd G 'at' hh:mm:ss z");  
  37.        show=true;
  38.         a=0;
  39.         b=0;
  40.         namelabel = new JLabel("");
  41.        bathroom = new JRadioButton("Bathroom");
  42.         bathroom.setMnemonic(KeyEvent.VK_C);
  43.         bathroom.setSelected(false);
  44.         bathroom.addActionListener(this);
  45.         counter = 1;
  46.        office = new JRadioButton("Office");
  47.        office.setMnemonic(KeyEvent.VK_C);
  48.         office.setSelected(false);
  49.          office.addActionListener(this);
  50.        nurse = new JRadioButton("Nurse");
  51.         nurse.setMnemonic(KeyEvent.VK_C);
  52.         nurse.setSelected(false);
  53.          nurse.addActionListener(this);
  54.        other = new JRadioButton("Other");
  55.         other.setMnemonic(KeyEvent.VK_C);
  56.         other.setSelected(false);
  57.          other.addActionListener(this);
  58.         idprompt = new JLabel("Enter ID Number");
  59.         idnumber = new JTextField(14);
  60.         f1 = new JFrame("Hall Pass");
  61.           f1.setSize(550,200);        
  62.         Container c1 = f1.getContentPane();
  63.         time = new JLabel("left at "+sdf.format(new java.util.Date(System.currentTimeMillis())));
  64.         id = "123";
  65.         p1 = new JPanel();
  66.         p1.setSize(500,150);
  67.         p1.setLayout(new BorderLayout());
  68.  
  69.           what = new JLabel("");
  70.  
  71.        bathroom.addItemListener(new Item());
  72.        other.addItemListener(new Item());
  73.         nurse.addItemListener(new Item());
  74.         office.addItemListener(new Item());
  75.         returnbutton = new JButton("Return");
  76.         returnbutton.addActionListener(this);
  77.         submit = new JButton("Submit");
  78.         submit.addActionListener(this);
  79.  
  80.         p2 = new JPanel();  //panel to add JLabel and TextField
  81.  
  82.         g1 = new GP();    
  83.          p1.add(g1,BorderLayout.CENTER);
  84.  
  85.                   //g1.setBackground(new RGB(255, 255, 255));
  86.        g1.add(idprompt);
  87.        g1.add(idnumber);
  88.         p2.add(submit);
  89.         g1.add(what);
  90.  
  91.         p1.add(p2,BorderLayout.SOUTH);      //adds p2 to south (Bottom) Graphics Panel will be added to Center    
  92.         c1.add(p1);
  93.  
  94.  
  95.         f1.show();
  96.  
  97.  
  98.     }
  99.  
  100.     public static void main(String[] args)    
  101.    {
  102.       main m = new main();
  103.    }
  104.  
  105.  
  106.  
  107.  
  108.     public class Item implements ItemListener{
  109.  
  110.        public void itemStateChanged(ItemEvent evt) {
  111.  
  112.             if (evt.getStateChange() == ItemEvent.SELECTED) {
  113.  
  114.  
  115.              if (bathroom.isSelected()){
  116.  
  117.                  bathroomb = true;
  118.                  System.out.println(bathroomb);
  119.                 }
  120.              if (office.isSelected()){
  121.  
  122.                  officeb = true;
  123.                 }    
  124.              if (nurse.isSelected()){
  125.  
  126.  
  127.                  nurseb = true;
  128.                 }  
  129.              if (other.isSelected()){   
  130.                  otherb = true;
  131.  
  132.                 }
  133.         }
  134.  
  135.  
  136.  
  137.  
  138.  
  139.         }
  140.     }
  141.  
  142.       public void actionPerformed (ActionEvent event)
  143.       {
  144.   try {
  145.         BufferedReader in = new BufferedReader(new FileReader("names.txt"));
  146.  
  147.         if (event.getSource() == returnbutton)
  148.         {
  149.             f1.show();
  150.  
  151.  
  152.         }
  153.  
  154.        //idnum = Integer.Parseint(enter);
  155.  
  156.  
  157.         if (event.getSource() == submit)
  158.         {
  159.  
  160.        for(int i=0; i<6; i++){
  161.     str = in.readLine().trim() ;
  162.        if(i<3){
  163.           namearray[a] = str;
  164.           a++;
  165.         }else{
  166.             idarray[b] = Integer.parseInt(str);
  167.             b++;
  168.          }
  169. }
  170.  
  171.  
  172.  
  173.         in.close();
  174.  
  175.  
  176.  
  177.            enterstring = idnumber.getText();
  178.            enter = Integer.parseInt(enterstring);
  179.            for(int b = 0;  b< 3; b++)
  180.            {
  181.                //number 1
  182.            if (enter==idarray[0])
  183.            {
  184.                  g1.remove(idnumber);
  185.                  p1.remove(submit);
  186.                  g1.remove(what);
  187.                  g1.remove(idprompt);
  188.                   p2.remove(submit);
  189.                   namelabel.setText(namearray[0]);
  190.                   g1.add(namelabel);
  191.                  g1.add(bathroom);
  192.                  g1.add(office);
  193.                  g1.add(nurse);
  194.                  g1.add(other);
  195.                                       f1.dispose();
  196.                       f1.show(); 
  197.  
  198.  
  199.  
  200.  
  201.  
  202.  
  203.  
  204.                //  nurse.addItemListener(new ItemListener() {
  205.  
  206.                     if (bathroomb == true){
  207.                         g1.remove(namelabel);     
  208.                  g1.remove(namelabel);
  209.                  g1.remove(bathroom);
  210.                  g1.remove(office);
  211.                  g1.remove(nurse);
  212.                  g1.remove(other);
  213.                       g1.setBackground(Color.red);
  214.                       p2.add(returnbutton);
  215.                       namelabel.setText(namearray[0]+" is currently using the pass the time left was ");
  216.                        g1.add(namelabel);
  217.                        g1.add(time);
  218.                      f1.dispose();
  219.                       f1.show();
  220.                     }
  221.                     else             
  222.  
  223.  
  224.  
  225.  
  226.  
  227.                   if (officeb == true){
  228.                        g1.remove(namelabel);     
  229.                  g1.remove(namelabel);
  230.                  g1.remove(bathroom);
  231.                  g1.remove(office);
  232.                  g1.remove(nurse);
  233.                  g1.remove(other);
  234.                       g1.setBackground(Color.red);
  235.  
  236.                       p2.add(returnbutton);
  237.                       namelabel.setText(namearray[0]+" is currently using the pass the time left was ");
  238.                        g1.add(namelabel);
  239.                        g1.add(time);
  240.                       f1.dispose();
  241.                       f1.show();
  242.  
  243.                     }
  244.  
  245.  
  246.  
  247.  
  248.  
  249.  
  250.  
  251.  
  252.  
  253.                   if (nurseb == true){
  254.  
  255.                        g1.setBackground(Color.red);
  256.  
  257.                       p2.add(returnbutton);
  258.                       namelabel.setText(namearray[0]+" is currently using the pass the time left was ");
  259.                        g1.add(namelabel);
  260.                        g1.add(time);
  261.  
  262.  
  263.  
  264.                     }
  265.  
  266.  
  267.  
  268.  
  269.  
  270.  
  271.                   if (otherb == true){
  272.  
  273.                        g1.setBackground(Color.red);
  274.  
  275.                       p2.add(returnbutton);
  276.                       namelabel.setText(namearray[0]+" is currently using the pass the time left was ");
  277.                        g1.add(namelabel);
  278.                        g1.add(time);
  279.  
  280.  
  281.                     }
  282.  
  283.  
  284.                 }
  285.                  else{
  286.              what.setText("Incorrect Login");
  287.             }
  288.  
  289.  
  290.  
  291.  
  292.               //g1.setBackground(Color.red);
  293.  
  294.              // p2.add(returnbutton);
  295.  
  296.              // g1.add(time);
  297.               f1.dispose();
  298.               f1.show();
  299.             }
  300.  
  301.  
  302.         //number 2
  303.         if (enter==teacher)
  304.         {
  305.             f1.dispose();
  306.         }
  307.           if (enter == idarray[1])
  308.            {
  309.                  g1.remove(idnumber);
  310.                  p1.remove(submit);
  311.                  g1.remove(what);
  312.                  g1.remove(idprompt);
  313.               g1.setBackground(Color.red);
  314.               p2.remove(submit);
  315.               p2.add(returnbutton);
  316.                namelabel.setText(namearray[1]);
  317.              g1.add(namelabel);
  318.               g1.add(time);
  319.               f1.dispose();
  320.               f1.show();
  321.             }
  322.  
  323.             else{
  324.              what.setText("Incorrect Login");
  325.             }
  326.         }
  327.           if (enter == idarray[2])
  328.            {
  329.                  g1.remove(idnumber);
  330.                  p1.remove(submit);
  331.                  g1.remove(what);
  332.                  g1.remove(idprompt);
  333.               g1.setBackground(Color.red);
  334.               p2.remove(submit);
  335.               p2.add(returnbutton);
  336.                namelabel.setText(namearray[2]);
  337.              g1.add(namelabel);
  338.               g1.add(time);
  339.               f1.dispose();
  340.               f1.show();
  341.             }
  342.  
  343.             else{
  344.              what.setText("Incorrect Login");
  345.             }
  346.  
  347.  
  348.             idnumber.setText(null);
  349.  
  350.  
  351.  
  352.  
  353.  
  354.  
  355.  
  356.           g1.repaint();
  357.  } catch (IOException e) {
  358.     }
  359.         }
  360.     }
  361.  
  362.  
  363.  
  364.  
  365.  class GP extends JPanel  //graphics panel
  366.  
  367. {
  368.  
  369.  
  370.     public GP()
  371.      {      
  372.  
  373.  
  374.  
  375.  
  376.         setBackground(Color.green);
  377.  
  378.      }
  379.  
  380.  
  381.  
  382.  
  383.  
  384.  
  385.     public void paint(Graphics g)
  386.     {
  387.      super.paint(g);
  388.  
  389.  
  390.  
  391.  
  392.  
  393.  
  394.     }
  395.  
  396. }
Nov 1 '07 #1
8 1676
r035198x
13,262 MVP
Well, I don't see any JCheckBoxes in the code except in the import statements.
But then again it's 0004 here so I could be due for some sleep ...
Nov 1 '07 #2
carlos123
53 New Member
Your right there isnt any, i just changed it and it still does the same thing with the checkboxes
Nov 2 '07 #3
carlos123
53 New Member
i really need your help
Nov 2 '07 #4
carlos123
53 New Member
hello, i am making a hall pass program for my computer programming class. i am having issues with my jcheckboxes. first off. this file reads from a .txt that just has
greg
john
joe
54343
45777
33444

in it. after the user puts in a correct id number, it displays 4 checkboxes to where they want to go. bathroom, office, nurse, and other. once the user clicks one of the checkboxes, it will remove all the stuff from the panel, and add the name of the person and the time they left. the problem i am having is when the user clicks the checkbox , nothing happens. run this for yourself and see for yourself what happens (if you want of course) this is my final assignment for computer programming and i need help bad lol. i have added an itemlistener, that when the checkbox is selected a boolean = true, then in the actionevents, when the "submit" button is pressed, and the id is correct, and the checkbox boolean is true, it removes all the stuff and puts in all the new elements. i want to say that only the bathroom checkbox has the stuff that it should have to make it work , like added the name and time to the second screen after the 4 checkboxes. also i would like to add that this program compiles just fine, just nothing happens when i click the checkboxes. THANKS IN ADVANCED

Expand|Select|Wrap|Line Numbers
  1. import java.awt.*;
  2. import java.awt.event.*;
  3. import javax.swing.*;
  4. import java.util.Calendar;
  5. import java.text.SimpleDateFormat;
  6. import java.lang.Object;
  7. import java.io.*;
  8. import javax.swing.event.*;
  9. import javax.swing.JCheckBox;
  10.  
  11. public class main implements ActionListener
  12. {
  13.         JFrame f1,f2;
  14.         JPanel p1,p2,p3,p4;
  15.         String id,enterstring,name,namestring,idstring,str;
  16.         GP g1;
  17.         JCheckBox bathroom,office,nurse,other;
  18.         JButton submit,returnbutton;
  19.         JTextField idnumber;
  20.         JLabel idprompt,what,time,namelabel;
  21.         boolean show,bathroomb,officeb,nurseb,otherb;
  22.         int idnum,counter;
  23.         SimpleDateFormat sdf;
  24.         String select;
  25.        String[] namearray; 
  26.        int[] idarray;
  27.        int a,b,idint,enter,teacher;
  28.      public main()
  29.     {   
  30.         teacher = 1234567890;
  31.          bathroomb = false;
  32.          officeb = false;
  33.          nurseb = false;
  34.          otherb = false;
  35.         namearray = new String[3];
  36.         idarray = new int[3];
  37.      sdf = new SimpleDateFormat("yyyy.MM.dd G 'at' hh:mm:ss z");  
  38.        show=true;
  39.         a=0;
  40.         b=0;
  41.         select = "unselected";
  42.         namelabel = new JLabel("");
  43.        bathroom = new JCheckBox("Bathroom");
  44.         bathroom.setMnemonic(KeyEvent.VK_C);
  45.         bathroom.setSelected(false);
  46.         bathroom.addActionListener(this);
  47.         counter = 1;
  48.        office = new JCheckBox("Office");
  49.        office.setMnemonic(KeyEvent.VK_C);
  50.         office.setSelected(false);
  51.          office.addActionListener(this);
  52.        nurse = new JCheckBox("Nurse");
  53.         nurse.setMnemonic(KeyEvent.VK_C);
  54.         nurse.setSelected(false);
  55.          nurse.addActionListener(this);
  56.        other = new JCheckBox("Other");
  57.         other.setMnemonic(KeyEvent.VK_C);
  58.         other.setSelected(false);
  59.          other.addActionListener(this);
  60.         idprompt = new JLabel("Enter ID Number");
  61.         idnumber = new JTextField(14);
  62.         f1 = new JFrame("Hall Pass");
  63.           f1.setSize(550,200);        
  64.         Container c1 = f1.getContentPane();
  65.         time = new JLabel("left at "+sdf.format(new java.util.Date(System.currentTimeMillis())));
  66.         id = "123";
  67.         p1 = new JPanel();
  68.         p1.setSize(500,150);
  69.         p1.setLayout(new BorderLayout());
  70.  
  71.           what = new JLabel("");
  72.  
  73.        bathroom.addItemListener(new Item());
  74.        other.addItemListener(new Item());
  75.         nurse.addItemListener(new Item());
  76.         office.addItemListener(new Item());
  77.         returnbutton = new JButton("Return");
  78.         returnbutton.addActionListener(this);
  79.         submit = new JButton("Submit");
  80.         submit.addActionListener(this);
  81.  
  82.         p2 = new JPanel();  //panel to add JLabel and TextField
  83.  
  84.         g1 = new GP();    
  85.          p1.add(g1,BorderLayout.CENTER);
  86.  
  87.                   //g1.setBackground(new RGB(255, 255, 255));
  88.        g1.add(idprompt);
  89.        g1.add(idnumber);
  90.         p2.add(submit);
  91.         g1.add(what);
  92.  
  93.         p1.add(p2,BorderLayout.SOUTH);      //adds p2 to south (Bottom) Graphics Panel will be added to Center    
  94.         c1.add(p1);
  95.  
  96.  
  97.         f1.show();
  98.  
  99.  
  100.     }
  101.  
  102.     public static void main(String[] args)    
  103.    {
  104.       main m = new main();
  105.    }
  106.  
  107.  
  108.  
  109.  
  110.     public class Item implements ItemListener{
  111.  
  112.        public void itemStateChanged(ItemEvent evt) {
  113.  
  114.             if (evt.getStateChange() == ItemEvent.SELECTED) {
  115.  
  116.  
  117.              if (bathroom.isSelected()){
  118.                  select.equals("selected");
  119.                  bathroomb = true;
  120.                  System.out.println(bathroomb);
  121.                 }
  122.              if (office.isSelected()){
  123.  
  124.                  officeb = true;
  125.                 }    
  126.              if (nurse.isSelected()){
  127.  
  128.  
  129.                  nurseb = true;
  130.                 }  
  131.              if (other.isSelected()){   
  132.                  otherb = true;
  133.  
  134.                 }
  135.         }
  136.  
  137.  
  138.  
  139.  
  140.  
  141.         }
  142.     }
  143.  
  144.       public void actionPerformed (ActionEvent event)
  145.       {
  146.   try {
  147.         BufferedReader in = new BufferedReader(new FileReader("names.txt"));
  148.  
  149.         if (event.getSource() == returnbutton)
  150.         {
  151.             f1.show();
  152.  
  153.  
  154.         }
  155.  
  156.        //idnum = Integer.Parseint(enter);
  157.  
  158.  
  159.         if (event.getSource() == submit)
  160.         {
  161.  
  162.        for(int i=0; i<6; i++){
  163.     str = in.readLine().trim() ;
  164.        if(i<3){
  165.           namearray[a] = str;
  166.           a++;
  167.         }else{
  168.             idarray[b] = Integer.parseInt(str);
  169.             b++;
  170.          }
  171. }
  172.  
  173.  
  174.  
  175.         in.close();
  176.  
  177.  
  178.  
  179.            enterstring = idnumber.getText();
  180.            enter = Integer.parseInt(enterstring);
  181.            for(int b = 0;  b< 3; b++)
  182.            {
  183.                //number 1
  184.            if (enter==idarray[0])
  185.            {
  186.                  g1.remove(idnumber);
  187.                  p1.remove(submit);
  188.                  g1.remove(what);
  189.                  g1.remove(idprompt);
  190.                   p2.remove(submit);
  191.                   namelabel.setText(namearray[0]);
  192.                   g1.add(namelabel);
  193.                  g1.add(bathroom);
  194.                  g1.add(office);
  195.                  g1.add(nurse);
  196.                  g1.add(other);
  197.                                       f1.dispose();
  198.                       f1.show(); 
  199.  
  200.  
  201.  
  202.  
  203.  
  204.  
  205.  
  206.                //  nurse.addItemListener(new ItemListener() {
  207.  
  208.                     if (select.equals("selected")){
  209.                         System.out.println("TESTWTF");
  210.                         g1.remove(namelabel);     
  211.                  g1.remove(namelabel);
  212.                  g1.remove(bathroom);
  213.                  g1.remove(office);
  214.                  g1.remove(nurse);
  215.                  g1.remove(other);
  216.                       g1.setBackground(Color.red);
  217.                       p2.add(returnbutton);
  218.                       g1.add(namelabel);
  219.                       namelabel.setText(namearray[0]+" is currently using the pass the time left was ");
  220.  
  221.                        g1.add(time);
  222.                      f1.dispose();
  223.                       f1.show();
  224.                       bathroomb=false;
  225.                     }
  226.                     else             
  227.  
  228.  
  229.  
  230.  
  231.  
  232.                   if (officeb == true){
  233.                        g1.remove(namelabel);     
  234.                  g1.remove(namelabel);
  235.                  g1.remove(bathroom);
  236.                  g1.remove(office);
  237.                  g1.remove(nurse);
  238.                  g1.remove(other);
  239.                       g1.setBackground(Color.red);
  240.  
  241.                       p2.add(returnbutton);
  242.                       namelabel.setText(namearray[0]+" is currently using the pass the time left was ");
  243.                        g1.add(namelabel);
  244.                        g1.add(time);
  245.                       f1.dispose();
  246.                       f1.show();
  247.  
  248.                     }
  249.  
  250.  
  251.  
  252.  
  253.  
  254.  
  255.  
  256.  
  257.  
  258.                   if (nurseb == true){
  259.  
  260.                        g1.setBackground(Color.red);
  261.  
  262.                       p2.add(returnbutton);
  263.                       namelabel.setText(namearray[0]+" is currently using the pass the time left was ");
  264.                        g1.add(namelabel);
  265.                        g1.add(time);
  266.  
  267.  
  268.  
  269.                     }
  270.  
  271.  
  272.  
  273.  
  274.  
  275.  
  276.                   if (otherb == true){
  277.  
  278.                        g1.setBackground(Color.red);
  279.  
  280.                       p2.add(returnbutton);
  281.                       namelabel.setText(namearray[0]+" is currently using the pass the time left was ");
  282.                        g1.add(namelabel);
  283.                        g1.add(time);
  284.  
  285.  
  286.                     }
  287.  
  288.  
  289.                 }
  290.                  else{
  291.              what.setText("Incorrect Login");
  292.             }
  293.  
  294.  
  295.  
  296.  
  297.               //g1.setBackground(Color.red);
  298.  
  299.              // p2.add(returnbutton);
  300.  
  301.              // g1.add(time);
  302.               f1.dispose();
  303.               f1.show();
  304.             }
  305.  
  306.  
  307.         //number 2
  308.         if (enter==teacher)
  309.         {
  310.             f1.dispose();
  311.         }
  312.           if (enter == idarray[1])
  313.            {
  314.                  g1.remove(idnumber);
  315.                  p1.remove(submit);
  316.                  g1.remove(what);
  317.                  g1.remove(idprompt);
  318.               g1.setBackground(Color.red);
  319.               p2.remove(submit);
  320.               p2.add(returnbutton);
  321.                namelabel.setText(namearray[1]);
  322.              g1.add(namelabel);
  323.               g1.add(time);
  324.               f1.dispose();
  325.               f1.show();
  326.             }
  327.  
  328.             else{
  329.              what.setText("Incorrect Login");
  330.             }
  331.         }
  332.           if (enter == idarray[2])
  333.            {
  334.                  g1.remove(idnumber);
  335.                  p1.remove(submit);
  336.                  g1.remove(what);
  337.                  g1.remove(idprompt);
  338.               g1.setBackground(Color.red);
  339.               p2.remove(submit);
  340.               p2.add(returnbutton);
  341.                namelabel.setText(namearray[2]);
  342.              g1.add(namelabel);
  343.               g1.add(time);
  344.               f1.dispose();
  345.               f1.show();
  346.             }
  347.  
  348.             else{
  349.              what.setText("Incorrect Login");
  350.             }
  351.  
  352.  
  353.             idnumber.setText(null);
  354.  
  355.  
  356.  
  357.  
  358.  
  359.  
  360.  
  361.           g1.repaint();
  362.  } catch (IOException e) {
  363.     }
  364.         }
  365.     }
  366.  
  367.  
  368.  
  369.  
  370.  class GP extends JPanel  //graphics panel
  371.  
  372. {
  373.  
  374.  
  375.     public GP()
  376.      {      
  377.  
  378.  
  379.  
  380.  
  381.         setBackground(Color.green);
  382.  
  383.      }
  384.  
  385.  
  386.  
  387.  
  388.  
  389.  
  390.     public void paint(Graphics g)
  391.     {
  392.      super.paint(g);
  393.  
  394.  
  395.  
  396.  
  397.  
  398.  
  399.     }
  400.  
  401. }
Nov 2 '07 #5
r035198x
13,262 MVP
Ok. Let's start by clearing the basics first. Start by changing this code

Expand|Select|Wrap|Line Numbers
  1. catch (IOException e) {
  2. //If an exception is thrown nothing is done
  3.         }
to

Expand|Select|Wrap|Line Numbers
  1. catch (IOException e) {
  2.       e.printStackTrace();
  3. //now if an exception is thrown the trace is displayed to the screen
  4.         }
Do this everywhere in the code where you put in the catch blocks and run it. This is just to make sure no exceptions are being thrown.
In general you should not gobble up exceptions by using empty catch blocks.
Nov 2 '07 #6
carlos123
53 New Member
ok i did that , no nothing was printed
Nov 2 '07 #7
r035198x
13,262 MVP
ok i did that , no nothing was printed
Well I just copied and pasted your code into my editor.
There's simply no exception handling in the whole thing.
You are reading from a text file and assuming that
1.) The file is always going to be available
2.) The file will always contain more than 6 lines
3.) The file will always have numbers from line 4 - 6
Such things needs to be checked for by the code not just assumed.
After that you do lots of adding and removing from a frame before calling it's dispose method on it! That most certainly isn't the clever way of going about things.

P.S I never got to see the JCheckboxes on the frame at all.
Nov 3 '07 #8
JosAH
11,448 Recognized Expert MVP
If there's a choice of one out of many, shouldn't the choice be represented by
JRadioButtons in a ButtonGroup instead?

kind regards,

Jos
Nov 3 '07 #9

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