Thread: how do I add Action Listener to my code to make the calculator work

i dont what to you mean can you provide the whole completed code for the actionlistener and the method please

need help can someone give the code which i need to allow my calculator to allow the button created from the nested for loop to function with an actionlistener.

here the code;

 
import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
 
public class EX_7_2 extends JFrame 
    {
        public EX_7_2()
        {
            setLayout(new BorderLayout(5, 10));
 
            // create p1
            JPanel p1 = new JPanel();
            p1.setLayout(new BorderLayout(5, 10));
 
          p1.add(new JTextField(), BorderLayout.NORTH);
                    JPanel p3 = new JPanel();
 
         p3.setLayout(new GridLayout(1, 3, 5, 5));
         JButton btBackspace = new JButton ("Backspace");
         btBackspace.setBackground(Color.WHITE);
         btBackspace.setForeground(Color.RED);
 
         JButton btCE = new JButton ("CE");
         btCE.setBackground(Color.WHITE);
         btCE.setForeground(Color.RED);
 
         JButton btC = new JButton ("C");
         btC.setBackground(Color.WHITE);
         btC.setForeground(Color.RED);
 
          p3.add(btBackspace);
          p3.add(btCE);
          p3.add(btC);
 
          p1.add(p3, BorderLayout.CENTER);
 
 
 
          // create p4
 
          JPanel p2 = new JPanel();
          p2.setLayout(new GridLayout(4, 3, 5, 5));  
 
          int num;
          for (int iRow = 3; iRow>0; iRow--)
          {
              for (int iCol = 1; iCol<4; iCol++)
              {
                  num = 3*(iRow-1) + iCol;
 
                  final JButton btBody = new JButton("" + num);
                  btBody.setBackground(Color.WHITE);
                  btBody.setForeground(Color.BLUE);
                  p2.add(btBody);
 
                   btBody.addActionListener(new ActionListener() 
                   {
                    @Override /**HandleItemEvent*/
                    public void actionPerformed(ActionEvent e) 
                        {
 
 
                          }
 
 
 
                  });
              }           
          }
 
         JButton btZero = new JButton ("0");
         btZero.setBackground(Color.WHITE);
         btZero.setForeground(Color.BLUE);
 
         JButton btPlusMinus = new JButton ("+/-");
         btPlusMinus.setBackground(Color.WHITE);
         btPlusMinus.setForeground(Color.BLUE);
 
         JButton btDot = new JButton (".");
         btDot.setBackground(Color.WHITE);
         btDot.setForeground(Color.BLUE);
 
         p2.add(btZero);
          p2.add(btPlusMinus);
          p2.add(btDot);
 
 
         JPanel p5 = new JPanel();
         p5.setLayout(new GridLayout(4, 2, 5, 5));
 
         JButton btBack = new JButton ("/");
         btBack.setBackground(Color.WHITE);
         btBack.setForeground(Color.RED);
 
         JButton btsprt = new JButton ("sprt");
         btsprt.setBackground(Color.WHITE);
         btsprt.setForeground(Color.BLUE);
 
         JButton btStar = new JButton ("*");
         btStar.setBackground(Color.WHITE);
         btStar.setForeground(Color.RED);
 
         JButton btPercentage = new JButton ("%");
         btPercentage.setBackground(Color.WHITE);
         btPercentage.setForeground(Color.BLUE);
 
         JButton btMinus = new JButton ("-");
         btMinus.setBackground(Color.WHITE);
         btMinus.setForeground(Color.RED);
 
         JButton btOnex = new JButton ("1/x");
         btOnex.setBackground(Color.WHITE);
         btOnex.setForeground(Color.BLUE);
 
         JButton btPlus = new JButton ("+");
         btPlus.setBackground(Color.WHITE);
         btPlus.setForeground(Color.RED);
 
         JButton btEquals = new JButton ("=");
         btEquals.setBackground(Color.WHITE);
         btEquals.setForeground(Color.RED);
 
         p5.add(btBack);
           p5.add(btsprt);
            p5.add(btStar);
             p5.add(btPercentage);
              p5.add(btMinus);
               p5.add(btOnex);
                p5.add(btPlus);
                 p5.add(btEquals);
 
                 JPanel p4 = new JPanel();
                 p4.setLayout(new BorderLayout(5, 10));
                 p4.add(p2, BorderLayout.CENTER);                
      p4.add(p5, BorderLayout.EAST);          
 
      add(p1, BorderLayout.NORTH );
      add(p4, BorderLayout.CENTER);
 
 
 
    }             
 
 
public static void main(String[] args) {
 
        EX_7_2 frame = new EX_7_2();
        frame.setTitle("Calculator");
        frame.setSize(350, 375);
              frame.setLocationRelativeTo(null);
                frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setVisible(true);
 
}
}

@alex1994: Please don't open duplicate threads. Threads merged.

the actionlistener fr the button in the loop are suppose, once you link on them; that particular number should show up in the JTextField

the code for the JTextField

  // create p1
            JPanel p1 = new JPanel();
            p1.setLayout(new BorderLayout(5, 10));
 
          p1.add(new JTextField(), BorderLayout.NORTH);

--- Update ---

the actionlistener for the button in the loop are suppose, once you have clicked on them; that particular number should show up in the JTextField;

code for JTextFeild

// create p1
            JPanel p1 = new JPanel();
            p1.setLayout(new BorderLayout(5, 10));
 
          p1.add(new JTextField(), BorderLayout.NORTH);

how do use the getSource() could i have an example.

Topic continues in this thread.