just one more error that i cannot figure out please help me.

[knoxy5467]

ok i need to get playerscore consistently updated sort of like a clock every one second and it is annoying me about how i cant get the value into the label or text field

package match.bonus.calculator;
import java.util.Timer;
import java.util.TimerTask;
 
import java.lang.Double;
        /* @author Parad0xs
 */
public class exp extends javax.swing.JApplet {
 
    /** Initializes the applet exp */
    public void init() {
        try {
            java.awt.EventQueue.invokeAndWait(new Runnable() {
 
                public void run() {
                    initComponents();
                }
            });
        } catch (Exception ex) {
            ex.printStackTrace();
        }
    }
 
    /** This method is called from within the init() method to
     * initialize the form.
     * WARNING: Do NOT modify this code. The content of this method is
     * always regenerated by the Form Editor.
     */
 
    @SuppressWarnings("unchecked")
    // <editor-fold defaultstate="collapsed" desc="Generated Code">
    private void initComponents() {
 
        jScrollPane1 = new javax.swing.JScrollPane();
        jList1 = new javax.swing.JList();
        jScrollPane3 = new javax.swing.JScrollPane();
        jTextArea2 = new javax.swing.JTextArea();
        jLabel1 = new javax.swing.JLabel();
 
        addPropertyChangeListener(new java.beans.PropertyChangeListener() {
            public void propertyChange(java.beans.PropertyChangeEvent evt) {
                formPropertyChange(evt);
            }
        });
 
        jList1.setModel(new javax.swing.AbstractListModel() {
            String[] strings = { "1", "2", "3", "4", "5", "6", "7", "8", "9", "10", "11", "12", "13", "14", "15", "16", "17", "18", "19", "20", "21", "22", "23", "24", "25", "26", "27", "29", "30", "31", "32", "33", "34", "35", "36", "37", "38", "39", "40", "41", "42", "43", "44", "45", "46", "47", "48", "49", "50" };
            public int getSize() { return strings.length; }
            public Object getElementAt(int i) { return strings[i]; }
        });
        jList1.setSelectionMode(javax.swing.ListSelectionModel.SINGLE_SELECTION);
        jScrollPane1.setViewportView(jList1);
 
        jTextArea2.setColumns(20);
        jTextArea2.setRows(5);
        jScrollPane3.setViewportView(jTextArea2);
 
        javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
        getContentPane().setLayout(layout);
        layout.setHorizontalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addContainerGap(88, Short.MAX_VALUE)
                .addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                    .addGroup(layout.createSequentialGroup()
                        .addGap(56, 56, 56)
                        .addComponent(jScrollPane3, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
                    .addGroup(layout.createSequentialGroup()
                        .addGap(113, 113, 113)
                        .addComponent(jLabel1)))
                .addGap(57, 57, 57))
        );
        layout.setVerticalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
                    .addGroup(layout.createSequentialGroup()
                        .addGap(119, 119, 119)
                        .addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED))
                    .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
                        .addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                        .addComponent(jLabel1)
                        .addGap(100, 100, 100)))
                .addComponent(jScrollPane3, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
        );
    }// </editor-fold>
    @SuppressWarnings("FieldNameHidesFieldInSuperclass")
double On = 1 ;
    private void formPropertyChange(java.beans.PropertyChangeEvent evt) {                                    
        // TODO add your handling code here:
    }                                   
 
    // Variables declaration - do not modify
    private javax.swing.JLabel jLabel1;
    public javax.swing.JList jList1;
    private javax.swing.JScrollPane jScrollPane1;
    private javax.swing.JScrollPane jScrollPane3;
    private javax.swing.JTextArea jTextArea2;
    // End of variables declaration
double winnerscale1 = 1;
int index= jList1.getSelectedIndex();
double spm = ((((61 % index )+1)/2)+3);
double gamelength;
boolean val ;
double playerscore1 = ( (winnerscale1 * ((gamelength/60) * spm))*(1) ); ;
 
 
 
 
 
 
 
class GCTask extends TimerTask {
  public void run() {
      ++gamelength
              ;
    System.gc();
  }
}
 
 
 
 
class timer {
  public  void main(String[] args) {
    Timer timer = new Timer();
    GCTask task = new GCTask();
    timer.schedule(task, 1000, 1000);
    int counter = 1;
    while (true) {
      try {
        Thread.sleep(500);
      } catch (InterruptedException e) {
      }
    }
  }
}                
}

please help me!!

[Norm]

There's a problem with your code. When I run it I get:
java.lang.NullPointerException
at ExpApplet.<init>(ExpApplet.java:111)

First get your code to execute w/o errors.

Then fix the GUI so it shows the value you want to change.

When you get that working, come back for advice on how to update the displayed value.

[knoxy5467]

oh sry i forgot it's not a code error [but thanks abou telling me about that] it's that i need to get playerscore1 into javax.swing.JTextArea(); but i cannot for the life of me find anything that will help me do that

....... and how would i fix the error that you came up with?

[Norm]

get playerscore1 into javax.swing.JTextArea();

Have you read the API doc for the JTextArea class?
What methods does it have that will change the contents of the JTextArea?

[knoxy5467]

i dont know i am a complete and utter fail i just want this thing done and working properly and tehn i will NEVER touch a proggramming language again ........ until i go back to school in the fall but ya i just dont know anything about java at all and ya so .... help?

[Norm]

Work on one small problem, solve it and then move on to the next one.
Programming can be very tedious and requires a lot of attention to detail. Lots of details.
Go slowly one step at a time until it starts making sense.
Trying to do too much too soon will only confuse things.

[knoxy5467]

i've been doing that and i just have one [now two] problems to fix

FML

this isn't the first time i've programmed it's just that this is the longest program i've ever made and the first one in java

[Norm]

Why did you pick a complicated one instead of a simple one? Where did you get the code about the property change? Too much IDE generated stuff that beginners don't know how to read and use.
You have code outside of a method that is getting executed before the GUI is present.

[knoxy5467]

so put all the stuff before the gui after it?

and then ya this is the code with out the netbeans ide stuff

package match.bonus.calculator;
import java.util.Timer;
import java.util.TimerTask;
 
import java.lang.Double;
        /* @author Parad0xs
 */
public class exp extends javax.swing.JApplet {
 
    /** Initializes the applet exp */
    public void init() {
        try {
            java.awt.EventQueue.invokeAndWait(new Runnable() {
 
                public void run() {
                    initComponents();
                }
            });
        } catch (Exception ex) {
            ex.printStackTrace();
        }
    }
 
    /** This method is called from within the init() method to
     * initialize the form.
     * WARNING: Do NOT modify this code. The content of this method is
     * always regenerated by the Form Editor.
     */
 
    @SuppressWarnings("unchecked")
    // <editor-fold defaultstate="collapsed" desc="Generated Code">
    private void initComponents() {
 
        jScrollPane1 = new javax.swing.JScrollPane();
        jList1 = new javax.swing.JList();
        jScrollPane3 = new javax.swing.JScrollPane();
        jTextArea2 = new javax.swing.JTextArea();
        jLabel1 = new javax.swing.JLabel();
 
        addPropertyChangeListener(new java.beans.PropertyChangeListener() {
            public void propertyChange(java.beans.PropertyChangeEvent evt) {
                formPropertyChange(evt);
            }
        });
 
        jList1.setModel(new javax.swing.AbstractListModel() {
            String[] strings = { "1", "2", "3", "4", "5", "6", "7", "8", "9", "10", "11", "12", "13", "14", "15", "16", "17", "18", "19", "20", "21", "22", "23", "24", "25", "26", "27", "29", "30", "31", "32", "33", "34", "35", "36", "37", "38", "39", "40", "41", "42", "43", "44", "45", "46", "47", "48", "49", "50" };
            public int getSize() { return strings.length; }
            public Object getElementAt(int i) { return strings[i]; }
        });
        jList1.setSelectionMode(javax.swing.ListSelectionModel.SINGLE_SELECTION);
        jScrollPane1.setViewportView(jList1);
 
        jTextArea2.setColumns(20);
        jTextArea2.setRows(5);
        jScrollPane3.setViewportView(jTextArea2);
 
        javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
        getContentPane().setLayout(layout);
        layout.setHorizontalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addContainerGap(88, Short.MAX_VALUE)
                .addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                    .addGroup(layout.createSequentialGroup()
                        .addGap(56, 56, 56)
                        .addComponent(jScrollPane3, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
                    .addGroup(layout.createSequentialGroup()
                        .addGap(113, 113, 113)
                        .addComponent(jLabel1)))
                .addGap(57, 57, 57))
        );
        layout.setVerticalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
                    .addGroup(layout.createSequentialGroup()
                        .addGap(119, 119, 119)
                        .addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED))
                    .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
                        .addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                        .addComponent(jLabel1)
                        .addGap(100, 100, 100)))
                .addComponent(jScrollPane3, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
        );
    }// </editor-fold>
    @SuppressWarnings("FieldNameHidesFieldInSuperclass")
double On = 1 ;
    private void formPropertyChange(java.beans.PropertyChangeEvent evt) {                                    
        // TODO add your handling code here:
    }                                   
 
    // Variables declaration - do not modify
    private javax.swing.JLabel jLabel1;
    public javax.swing.JList jList1;
    private javax.swing.JScrollPane jScrollPane1;
    private javax.swing.JScrollPane jScrollPane3;
    private javax.swing.JTextArea jTextArea2;
    // End of variables declaration
double winnerscale1 = 1;
int index= jList1.getSelectedIndex();
double spm = ((((61 % index )+1)/2)+3);
double gamelength;
boolean val ;
double playerscore1 = ( (winnerscale1 * ((gamelength/60) * spm))*(1) ); ;
 
 
 
 
 
 
 
class GCTask extends TimerTask {
  public void run() {
      ++gamelength
              ;
    System.gc();
  }
}
 
 
 
 
class timer {
  public  void main(String[] args) {
    Timer timer = new Timer();
    GCTask task = new GCTask();
    timer.schedule(task, 1000, 1000);
    int counter = 1;
    while (true) {
      try {
        Thread.sleep(500);
      } catch (InterruptedException e) {
      }
    }
  }
}                
}

[Norm]

Does it work now? If not, please explain what it does or doesn't do.

Try debugging your code by adding printlns statements to show the execution flow and where variables are changed.

[knoxy5467]

uh all i want it to do is time the seconds that go by since user presses specific button and then using that and the rank of the user [selected from list] it acts like a stopwatch exept just showing your match bonus instead of time [yes this is for CoD i know i'm a noob but until battlefield 3 wtf am i supposed to do?]

and i have no idea what you just said's meaning

[knoxy5467]

do you mean the

 // hello and i am a noob

thingys?

[javapenguin]

What is playscore1?

Could you try using the setText() method?

If playscore1 is a JLabel or something like that, can't do something like this

JTextArea area = new JTextArea(100,100);
area.setText(playscore1.getText());

[knoxy5467]

What is playscore1?

Could you try using the setText() method?

If playscore1 is a JLabel or something like that, can't do something like this

JTextArea area = new JTextArea(100,100);
area.setText(playscore1.getText());

i think i tried that but i'll give it another shot.

[javapenguin]

Wait, playerscore1 is a double.

You'll have to make it a Double and then call a toString() as you must set the text to a String.

Double ps1 = playerscore1;

String text = ps1.toString();

area.setText(text);

[Norm]

time the seconds that go by since user presses specific button

How are you doing this?
How do you detect the button press?
When/where do you record the starting time?
Where do you compute the duration from the starting time?
Where do you display that duration?

[knoxy5467]

ok i know i've already tried this but i'll try it again

for some reason that somtimes works when somthing doesn't work the first time or the 4th but works the 100th

and what do you know IT WORKED THANK YOU SO GOD D**M Much *breaks out into song and dance*

[knoxy5467]

and all of your questions i have not started yet like you said one hurdle at a time r somthing like that

Work on one small problem, solve it and then move on to the next one.
Programming can be very tedious and requires a lot of attention to detail. Lots of details.

ya thats it

[knoxy5467]

ok um how would i make a toggle button turn the timer on and then when it's off it freezes the text field where it's at while when it's turned back on the gamelength is reset back to 0 ??

and to answer these things

When/where do you record the starting time?
Where do you compute the duration from the starting time?
Where do you display that duration?

 class GCTask extends TimerTask {
  public void run() {
      ++gamelength
              ;
    System.gc();
  }
}
 
 
 
 
class timer {
  public  void main(String[] args) {
    Timer timer = new Timer();
    GCTask task = new GCTask();
    timer.schedule(task, 1000, 1000);
    int counter = 1;
    while (true) {
      try {
        Thread.sleep(500);
      } catch (InterruptedException e) {
      }
    }
  }
}                
}

[told ya i fails]

[javapenguin]

I think I found that a bunch of code appears in the middle of nowhere outside any methods.

Where does this go:

 private javax.swing.JLabel jLabel1;
            public javax.swing.JList jList1;
            private javax.swing.JScrollPane jScrollPane1;
            private javax.swing.JScrollPane jScrollPane3;
            private JTextArea jTextArea2;
 
            // End of variables declaration
        double winnerscale1 = 1;
        int index= jList1.getSelectedIndex();
        double spm = ((((61 % index )+1)/2)+3);
        double gamelength;
        boolean val ;
        double playerscore1 = ( (winnerscale1 * ((gamelength/60) * spm))*(1) );
		  Double ps1 = playerscore1 ;
		  String str = ps1.toString();
 
		  jTextArea2.setText(str);

[knoxy5467]

um exept the very top stuff i made all of that stuff it's declaring variables and setting the text in a text field

[Norm]

Read the Tutorial re buttons:
How to Use Buttons, Check Boxes, and Radio Buttons (The Java™ Tutorials > Creating a GUI With JFC/Swing > Using Swing Components)

[javapenguin]

A button turn the timer on?

Perhaps add an ActionListener to the Toggle Button.

[javapenguin]

I've gotten it to compile and show some stuff now.

   package match.bonus.calculator;
   import java.util.Timer;
   import java.util.TimerTask;
   import javax.swing.*;
   import java.awt.*;
   import javax.swing.JTextArea;
 
   import java.lang.Double;
                /* @author Parad0xs
         */
   public class exp extends javax.swing.JApplet {
      double gamelength;
            /** Initializes the applet exp */
      public void init() {
         try {
            java.awt.EventQueue.invokeAndWait(
                  new Runnable() {
 
                     public void run() {
                        initComponents();
                     }
                  });
         } 
            catch (Exception ex) {
               ex.printStackTrace();
            }
      }
 
            /** This method is called from within the init() method to
             * initialize the form.
             * WARNING: Do NOT modify this code. The content of this method is
             * always regenerated by the Form Editor.
             */
 
      @SuppressWarnings("unchecked")
            // <editor-fold defaultstate="collapsed" desc="Generated Code">
            private void initComponents() {
 
         JScrollPane jScrollPane1 = new javax.swing.JScrollPane();
         JList jList1 = new javax.swing.JList();
         JScrollPane jScrollPane3 = new javax.swing.JScrollPane();
         JTextArea  jTextArea2 = new javax.swing.JTextArea();
         JLabel  jLabel1 = new javax.swing.JLabel();
 
         double winnerscale1 = 1;
         int index= jList1.getSelectedIndex();
         double spm = ((((61 % index )+1)/2)+3);
 
         boolean val ;
         double playerscore1 = ( (winnerscale1 * ((gamelength/60) * spm))*(1) );
 
         Double ps1 = playerscore1 ;
         String str = ps1.toString();
         jTextArea2 = new JTextArea(100,100);
         jTextArea2.setText(str);
 
         addPropertyChangeListener(
               new java.beans.PropertyChangeListener() {
                  public void propertyChange(java.beans.PropertyChangeEvent evt) {
                     formPropertyChange(evt);
                  }
               });
 
         jList1.setModel(
               new javax.swing.AbstractListModel() {
                  String[] strings = { "1", "2", "3", "4", "5", "6", "7", "8", "9", "10", "11", "12", "13", "14", "15", "16", "17", "18", "19", "20", "21", "22", "23", "24", "25", "26", "27", "29", "30", "31", "32", "33", "34", "35", "36", "37", "38", "39", "40", "41", "42", "43", "44", "45", "46", "47", "48", "49", "50" };
                  public int getSize() { 
                     return strings.length; }
                  public Object getElementAt(int i) { 
                     return strings[i]; }
               });
         jList1.setSelectionMode(javax.swing.ListSelectionModel.SINGLE_SELECTION);
         jScrollPane1.setViewportView(jList1);
 
         jTextArea2.setColumns(20);
         jTextArea2.setRows(5);
         jScrollPane3.setViewportView(jTextArea2);
 
         javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
         getContentPane().setLayout(layout);
         layout.setHorizontalGroup(
                    layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                    .addGroup(layout.createSequentialGroup()
                        .addContainerGap(88, Short.MAX_VALUE)
                        .addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                        .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                            .addGroup(layout.createSequentialGroup()
                                .addGap(56, 56, 56)
                                .addComponent(jScrollPane3, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
                            .addGroup(layout.createSequentialGroup()
                                .addGap(113, 113, 113)
                                .addComponent(jLabel1)))
                        .addGap(57, 57, 57))
                );
         layout.setVerticalGroup(
                    layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                    .addGroup(layout.createSequentialGroup()
                        .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
                            .addGroup(layout.createSequentialGroup()
                                .addGap(119, 119, 119)
                                .addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED))
                            .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
                                .addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                                .addComponent(jLabel1)
                                .addGap(100, 100, 100)))
                        .addComponent(jScrollPane3, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                        .addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
                );
      }// </editor-fold>
      @SuppressWarnings("FieldNameHidesFieldInSuperclass")
        double On = 1 ;
      private void formPropertyChange(java.beans.PropertyChangeEvent evt) {                                    
                // TODO add your handling code here:
      }                                   
 
            // Variables declaration - do not modify
 
            // End of variables declaration
 
 
 
 
 
 
 
 
      class GCTask extends TimerTask {
         public void run() {
            ++gamelength
                      ;
            System.gc();
         }
      }
 
 
 
 
      class timer {
         public  void main(String[] args) {
            Timer timer = new Timer();
            GCTask task = new GCTask();
            timer.schedule(task, 1000, 1000);
            int counter = 1;
            while (true) {
               try {
                  Thread.sleep(500);
               } 
                  catch (InterruptedException e) {
                  }
            }
         }
      }                
   }

[knoxy5467]

what does that do?