How to perform Calculation when a button a pressed in a Frame

[sampathkarnati]

Hi friends,

I have created a Frame which has some checkboxes , a button and text field. when i check some checkboxes and press the Button (ie in my program Metrics level Button ) it should display the result as number of checkboxes that are checked divided by total number of chechboxes. ie if i check some 6 check boxes and press the Metrics level button it should display 6 divided by 12 ie 0.5 in the Result Textfield.

I am sending the code i have written.

Thanks in advance.



public class Frame extends java.awt.Frame {

/** Creates new form Frame */
public Frame() {
initComponents();
setSize(800, 800);
}

private void initComponents() {
label1 = new java.awt.Label();
checkbox1 = new java.awt.Checkbox();
checkbox2 = new java.awt.Checkbox();
checkbox3 = new java.awt.Checkbox();
checkbox4 = new java.awt.Checkbox();
checkbox5 = new java.awt.Checkbox();
checkbox6 = new java.awt.Checkbox();
checkbox7 = new java.awt.Checkbox();
checkbox8 = new java.awt.Checkbox();
checkbox9 = new java.awt.Checkbox();
checkbox10 = new java.awt.Checkbox();
checkbox11 = new java.awt.Checkbox();
checkbox12 = new java.awt.Checkbox();
button1 = new java.awt.Button();
textField1 = new java.awt.TextField();

setLayout(null);

addWindowListener(new java.awt.event.WindowAdapter() {
public void windowClosing(java.awt.event.WindowEvent evt) {
exitForm(evt);
}
});

label1.setText("Select the Metrics below");
add(label1);
label1.setBounds(320, 20, 136, 20);

checkbox1.setLabel("Architecture Metrics");
add(checkbox1);
checkbox1.setBounds(240, 80, 84, 20);

checkbox2.setLabel("Runtime Metrics");
add(checkbox2);
checkbox2.setBounds(240, 200, 115, 20);

checkbox3.setLabel("Documentation Metrics");
add(checkbox3);
checkbox3.setBounds(240, 320, 152, 20);

checkbox4.setLabel("Size");
add(checkbox4);
checkbox4.setBounds(280, 110, 49, 20);

checkbox5.setLabel("Structure");
add(checkbox5);
checkbox5.setBounds(280, 130, 75, 20);

checkbox6.setLabel("Complexity");
add(checkbox6);
checkbox6.setBounds(280, 150, 86, 20);

checkbox7.setLabel("Size");
add(checkbox7);
checkbox7.setBounds(290, 230, 49, 20);

checkbox8.setLabel("Structure");
add(checkbox8);
checkbox8.setBounds(290, 250, 75, 20);

checkbox9.setLabel("Complexity");
add(checkbox9);
checkbox9.setBounds(290, 270, 86, 20);

checkbox10.setLabel("Size");
add(checkbox10);
checkbox10.setBounds(300, 350, 49, 20);

checkbox11.setLabel("Structure");
add(checkbox11);
checkbox11.setBounds(300, 370, 75, 20);

checkbox12.setLabel("Complexity");
add(checkbox12);
checkbox12.setBounds(300, 390, 86, 20);

button1.setLabel("Metrics level");
add(button1);
button1.setBounds(290, 470, 83, 24);

textField1.setText("Result");
textField1.setName("Result");
add(textField1);
textField1.setBounds(400, 470, 60, 20);

pack();
}
public void actionPerformed(ActionEvent e) {

****** I think code should be added here for the button pressed event*******
}


/** Exit the Application */
private void exitForm(java.awt.event.WindowEvent evt) {
System.exit(0);
}

/**
* @param args the command line arguments
*/
public static void main(String args[]) {
new Frame().show();
}


// Variables declaration - do not modify
private java.awt.Button button1;
private java.awt.Checkbox checkbox1;
private java.awt.Checkbox checkbox10;
private java.awt.Checkbox checkbox11;
private java.awt.Checkbox checkbox12;
private java.awt.Checkbox checkbox2;
private java.awt.Checkbox checkbox3;
private java.awt.Checkbox checkbox4;
private java.awt.Checkbox checkbox5;
private java.awt.Checkbox checkbox6;
private java.awt.Checkbox checkbox7;
private java.awt.Checkbox checkbox8;
private java.awt.Checkbox checkbox9;
private java.awt.Label label1;
private java.awt.TextField textField1;
// End of variables declaration

}

[sjalle]

Hey !, Don't extend a class with new a class w. the
same name

If you have an actionPerformed() method you should
also implement the ActionListener interface for your frame:

public class MyFrame extends java.awt.Frame implements ActionListener {

Then you must tell the buttons that somebody has any
interesest in their clicks, eg your Frame:

aButton.addActionListener(this);

Then you implement the actionPerformed() method as you described:

public void actionPerformed (ActionEvent ae) {
  if (ae.getSource()==aButton) {
  } else  (etc.)
  .
  .
}