Thread: SOMEONE PLEASE HELP ME ADD THE ACTIONLISTENER INTERFACE...

Hi,

I have created the buttons along in the GUI, but I need help adding the ActionListener interface to make the buttons respond. Any assistance would be greatly appreciated...

import javax.swing.*;
import javax.swing.JFrame;//page 298 Core Java
import javax.swing.JTextField;//page 379 Core Java
import javax.swing.JButton;//page 331 Core Java
import java.awt.Container;//page 331 Core Java
import java.awt.FlowLayout;//page 371 Core Java
 
class theButtons {
 
    public static void main(String args[]) {
 
        //declare/initialize variables
        JFrame frame;
        Container contentPane;
        JTextField textfield;
        JButton button;
        FlowLayout layout;
        String thePrincipal;
        String interestRate;
        String theTerm;
        String pleaseCalculate;
        String toRefresh;
 
        JFrame theFrame = new JFrame("McBride Financial Services");
        final int FRAME_WIDTH = 550;
          final int FRAME_HEIGHT = 300;
          theFrame.setSize(FRAME_WIDTH, FRAME_HEIGHT);
 
        textfield = new JTextField("Type your text here.");
 
        contentPane = theFrame.getContentPane();
 
        thePrincipal = "Principal Amount";
        button = new JButton(thePrincipal);
        contentPane.add(textfield);
        contentPane.add(button);
        layout = new FlowLayout();
        contentPane.setLayout(layout);
 
        interestRate = "Interest Rate";
        button = new JButton(interestRate);
        contentPane.add(textfield);
        contentPane.add(button);
        layout = new FlowLayout();
        contentPane.setLayout(layout);
 
        theTerm = "Loan Term";
        button = new JButton(theTerm);
        contentPane.add(textfield);
        contentPane.add(button);
        layout = new FlowLayout();
        contentPane.setLayout(layout);
 
        pleaseCalculate = "Calculate";
        button = new JButton(pleaseCalculate);
        contentPane.add(textfield);
        contentPane.add(button);
        layout = new FlowLayout();
        contentPane.setLayout(layout);
 
        toRefresh = "Refresh";
        button = new JButton(toRefresh);
        contentPane.add(textfield);
        contentPane.add(button);
        layout = new FlowLayout();
        contentPane.setLayout(layout);
 
        theFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        theFrame.pack();
        theFrame.setVisible(true);
    }
}

hi beginning2understand,

welcome to the java programming forums.

below is the code: sorry because its not that great but hope it helps.

i put the action listener in the textfield. if you click the button, it prints the text of that button.

import java.awt.Container;
import java.awt.FlowLayout;
import java.awt.event.*;
import javax.swing.*;
 
class Guib {
 
   public static void main(String[] args) {
  Container contentPane;
   final JTextField textfield = new JTextField();
  final JButton button1, button2, button3, button4, button5;
  FlowLayout layout;
  String thePrincipal;
  String interestRate;
  String theTerm;
  String pleaseCalculate;
  String toRefresh;
 
        ActionListener a1 = new ActionListener() {
         public void actionPerformed(ActionEvent e) {
 
            textfield.setText("Principal Amount");
         }
      };
 
        ActionListener a2 = new ActionListener() {
         public void actionPerformed(ActionEvent e) {
            textfield.setText("Interest Rate");
         }
      };
        ActionListener a3 = new ActionListener() {
         public void actionPerformed(ActionEvent e) {
            textfield.setText("Loan Term");
         }
      };
 
            ActionListener a4 = new ActionListener() {
         public void actionPerformed(ActionEvent e) {
          textfield.setText("Calculate");
         }
      };
 
            ActionListener a5 = new ActionListener() {
         public void actionPerformed(ActionEvent e) {
          textfield.setText("Refresh");
         }
      };
 
JFrame theFrame = new JFrame("McBride Financial Services");
final int FRAME_WIDTH = 550;
final int FRAME_HEIGHT = 300;
theFrame.setSize(FRAME_WIDTH, FRAME_HEIGHT);
 
textfield.setText("Type your text here.");
 
contentPane = theFrame.getContentPane();
 
thePrincipal = "Principal Amount";
button1 = new JButton(thePrincipal);
contentPane.add(textfield);
contentPane.add(button1);
layout = new FlowLayout();
contentPane.setLayout(layout);
 
interestRate = "Interest Rate";
button2 = new JButton(interestRate);
contentPane.add(textfield);
contentPane.add(button2);
layout = new FlowLayout();
contentPane.setLayout(layout);
 
theTerm = "Loan Term";
button3 = new JButton(theTerm);
contentPane.add(textfield);
contentPane.add(button3);
layout = new FlowLayout();
contentPane.setLayout(layout);
 
pleaseCalculate = "Calculate";
button4 = new JButton(pleaseCalculate);
//button.addActionListener(button);
contentPane.add(textfield);
contentPane.add(button4);
layout = new FlowLayout();
contentPane.setLayout(layout);
 
 
toRefresh = "Refresh";
button5 = new JButton(toRefresh);
contentPane.add(textfield);
contentPane.add(button5);
layout = new FlowLayout();
contentPane.setLayout(layout);
//button5.addActionListener(a1);
 
theFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
theFrame.pack();
theFrame.setVisible(true);
 
button1.addActionListener(a1);
theFrame.getContentPane().add(button1);
 
button2.addActionListener(a2);
theFrame.getContentPane().add(button2);
 
button3.addActionListener(a3);
theFrame.getContentPane().add(button3);
 
button4.addActionListener(a4);
theFrame.getContentPane().add(button4);
 
button5.addActionListener(a5);
theFrame.getContentPane().add(button5);
 
 
   }
}

Cheers,
Truffy

thank you for your post Truffy... I apologize for taking so long in getting back to you... life has a way of doing that sometimes...

Originally Posted by beginning2Understand

thank you for your post Truffy... I apologize for taking so long in getting back to you... life has a way of doing that sometimes...

its okay? if it solved your problem pls marked as solved. thanks.

Cheers,
Truffy

will do...

Originally Posted by beginning2Understand

will do...

great.

Cheers,
Truffy.