gistfile1.txt

package finalproject;

import java.awt.BorderLayout;
import java.awt.event.*;
import javax.swing.*;

// Don't impelment ActionListener on the JFrame unless you need the JFrame to
// have an action listener
public class Game extends JFrame {

    public String command;

    JFrame frame = new JFrame("Game gui");
    JTextField textInput = new JTextField();
    JTextArea textOutputArea = new JTextArea(5, 30);
    JButton jbtnenter = new JButton("Enter");
    JPanel displayPanel = new JPanel();

    JScrollPane scrollpane = new JScrollPane(textOutputArea);

    public Game() {
        jbtnenter.addActionListener(commandListener());
        textInput.addActionListener(commandListener());
        displayPanel.setLayout(new BorderLayout());

        textOutputArea.setEditable(false);
        textOutputArea.setText("Question");

        // Add the components to the panel
        displayPanel.add(textOutputArea, BorderLayout.NORTH);
        displayPanel.add(textInput, BorderLayout.CENTER);
        displayPanel.add(jbtnenter, BorderLayout.SOUTH);

        // Add the panel to this JFrame
        this.add(displayPanel);
        // setVisible(true); -- Don't do this in this class, let the class that
        // calls the Frame handle this
        // Always call pack last
        pack();
    }

    private ActionListener commandListener() {
        return new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                command = textInput.getText();
                if (command.equals("answer")) {
                    textOutputArea.setText("response");
                }
            }
        };
    }
}

gistfile2.txt

package finalproject;

import javax.swing.JFrame;

public class GameRunner {

    // Used to test the code
    public static void main(String[] args) {
        Game game = new Game();
        game.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        game.setVisible(true);
    }
}