ActionListener isn't Implementing
- by Nick Gibson
JFrameWithPanel is not abstract and does not override abstract method actionPerformed(java.awt.event.ActionEvent) in java.awt.event.ActionListener
public class JFrameWithPanel extends JFrame implements ActionListener
I Don't get this code. Book and Java site tells me this is the syntax for the method, but again this error shows up constantly.
import javax.swing.*;
import javax.swing.JOptionPane;
import java.awt.*;
import java.awt.event.*;
import java.lang.Math.*;
import java.lang.Integer.*;
import java.util.*;
import java.util.Random;
import java.io.*;
import java.text.*;
import java.text.DecimalFormat.*;
public class JFrameWithPanel extends JFrame implements ActionListener
{
JButton button = new JButton("Exit");
public JFrameWithPanel()
{
super("JFrame with Panel");
JComboBox packageChoice = new JComboBox();
packageChoice.addItem("A+ Certification");
packageChoice.addItem("Network+ Certification ");
packageChoice.addItem("Security+ Certifictation");
packageChoice.addItem("CIT Full Test Package");
packageChoice.addActionListener(this);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
JPanel pane = new JPanel();
pane.add(button);
pane.add(packageChoice);
setContentPane(pane);
setSize(200,100);
setVisible(true);
}
}
then later
public class CreateJFrameWithPanel
{
public static void main(String[] args)
{
JFrameWithPanel panel = new JFrameWithPanel();
}
}
