[SOLVED] reseting a value

[s34nn4]

Hi everyone its a pleasure to be here again. Im a novice in Java and my instructor send us a home work on regards to Radio button. Basically, my problem with my applet was... everytime I hit reset button, the value still remain. Supposedly the whole data must reset and get back from where it should started once I hit reset, but apparently it doesn't seem to do anything... it was just hidding the value.


here's my code is there something I miss?

Thank in advance.

/**
 *
 * @author Sean
 */
import java.awt.*;
import java.applet.*; 
import java.awt.event.*; 


public class overdueItems extends Applet implements ActionListener,ItemListener{
      
 int bookspenalty=5, recordspenalty=7, tapespenalty=3, cdpenalty=4, videotapespenalty=6;
 int books=0, records=0, tapes=0, cd=0, videotapes=0;

 int bookitem,recorditem,itemprice;
 
 boolean done=false;
 int price=0;
 int total_overdueitems=0;
 int total_overduecharge=0;
 
    Label hiddenagainLabel = new Label("");
    Label companyName = new Label("      Hill Brookes Library       ");
    Label hiddenLabel = new Label("");
    Label heading = new Label("    Overdue Item              Price     ");
    
    Label bookstabulate = new Label("Books : ");
    Label recordstabulate = new Label("Records : ");
    Label tapestabulate = new Label("Tapes : ");
    Label cdtabulate = new Label("CD's : ");
    Label videotapetabulate = new Label("Videotapes : ");
    Label outputLabel = new Label("Total Overdue Charge : ");
    Label outputLabel2 = new Label("Total Overdue Items :");
    
CheckboxGroup itemGroup = new CheckboxGroup();
 
    Checkbox bookcheckBox = new Checkbox("Books                $5.00",false,itemGroup);
    Checkbox recordcheckBox = new Checkbox("Records            $7.00",false,itemGroup);
    Checkbox tapescheckBox = new Checkbox (" Tapes               $3.00",false, itemGroup);
    Checkbox cdcheckBox = new Checkbox ("CD's                  $4.00",false,itemGroup);
    Checkbox videotapescheckBox = new Checkbox ("  Videotapes     $6.00",false,itemGroup);
    Checkbox hiddencheckBox = new Checkbox ("",true);
    Button calcButton = new Button ("Calculate");
    Button addButton = new Button ("Add");
    Button clearButton = new Button ("Clear");
    
    
    public void init() {
        
        setSize(170,450);
        setBackground (Color.yellow);
        
         add(hiddenagainLabel);
         add(companyName);
         add(hiddenLabel);
         add(heading);        
         add(bookcheckBox);
            bookcheckBox.addItemListener(this);  
         add(recordcheckBox);
            recordcheckBox.addItemListener(this);  
         add(tapescheckBox);
            tapescheckBox.addItemListener(this);  
         add(cdcheckBox);
            cdcheckBox.addItemListener(this);
         add(videotapescheckBox);
            videotapescheckBox.addItemListener(this);  
          add(addButton);
            addButton.addActionListener(this);   
         add(calcButton);
            calcButton.addActionListener(this);        
         add(clearButton);
             clearButton.addActionListener(this);
         
         add(bookstabulate);
         
         add(recordstabulate);
         
         add(tapestabulate);
         
         add(cdtabulate);
         
         add(videotapetabulate);
         
         add(outputLabel2);
         
         add(outputLabel);
         
    }

    
    public void itemStateChanged(ItemEvent choice) 
    {
        
        
            
        if (bookcheckBox.getState())
        {
         bookstabulate.setText("Books : "+(++books)); 
       
        }
        
        if(recordcheckBox.getState())
          
        {
         recordstabulate.setText("Records : "+(++records));
        }
        
        
        if (tapescheckBox.getState())
            
        {
         tapestabulate.setText("Tapes : "+(++tapes)); 
        }
          
          
        if (cdcheckBox.getState())
          
        {
        cdtabulate.setText("CD's : "+(++cd)); 
        }
        
    
        if (videotapescheckBox.getState())
          
                {
                videotapetabulate.setText("Videotapes : "+(++videotapes)); 
        }
        
        else
            
        itemprice = (books+records+tapes+cd+videotapes);
        outputLabel2.setText("Total Overdue Items : "+(itemprice));
            
        
        
        
    }
    
    
    public void actionPerformed(ActionEvent n)
    {
             
        {
      
      try
      {
                       
        String arg=n.getActionCommand();
        
        while (arg == "Clear") throw new NumberFormatException();
        
        
        
     
    
        {
        if (bookcheckBox.getState())
        total_overduecharge+=bookspenalty*books;
      
     
        if (recordcheckBox.getState())
        total_overduecharge+=recordspenalty*records;
        
        if (tapescheckBox.getState())
        total_overduecharge+=tapespenalty*tapes;
  
        if (cdcheckBox.getState())
        total_overduecharge+=cdpenalty*cd;
        
        if (videotapescheckBox.getState())
        total_overduecharge+=videotapespenalty*videotapes;
     
            
        total_overduecharge = (books*(bookspenalty)+records*(recordspenalty)
                                +tapes*(tapespenalty)+cd*(cdpenalty)+videotapes*(videotapespenalty));
        
       
        outputLabel.setText("Your Overdue Charge $"+total_overduecharge); 
       }
     }   
    catch (NumberFormatException m )
    {

      
    
                
   bookstabulate.setText("Books : ");
   recordstabulate.setText("Records :");
   tapestabulate.setText("Tapes :"); 
   cdtabulate.setText("CD's :"); 
   videotapetabulate.setText("Videotapes : "); 
   outputLabel2.setText("Total Overdue Items : ");
   outputLabel.setText("Your Overdue Charge : ");
   {
   bookcheckBox.setState(false);
   recordcheckBox.setState(false);
   tapescheckBox.setState(false);
   cdcheckBox.setState(false);
   videotapescheckBox.setState(false);
   hiddencheckBox.setState(true);
       
   

            }
         }
      }
   }
}

[s34nn4]

Ok! I answer my question again. There is one thing I miss. In this part you need to declare a looping in order to reset the value I use a while loop and increment it on the actionperformed. this is know solved after few cups of coffee.

[Fubarable]

Be careful when comparing Strings. For instance, you don't compare strings with == but instead with equals:

Not

if (arg == "Clear")

but instead

if (arg.equals("Clear"))

[Eranga]

Be careful when comparing Strings. For instance, you don't compare strings with == but instead with equals:

I think it must. Not a good practice to get familiar with the use of == to compare strings.

[s34nn4]

Ok thanks folks. Ill keep that on my mind.

yellow line is gone now.

[Eranga]

Ok thanks folks. Ill keep that on my mind.

yellow line is gone now.

If you can remove all such warnings too, much better. Nice to familiar with in future too.