problem for games

[Gunther]

i am trying to make a game .Now i am starting form game menu,but it isn't work.

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

public class GameMenu extends JFrame implements MouseListener
{
ImageIcon icon;
Image image;
ImageIcon icon2;
JList menulist;
GameMenu frame;
public GameMenu(){



//Create background
icon = new ImageIcon("image/bgimg.jpg");
icon2 = new ImageIcon("image/002.jpg");
JPanel panel = new JPanel(new GridBagLayout())
{
protected void paintComponent(Graphics g)
{
// Dispaly image at at full size
g.drawImage(icon.getImage(), 0, 0, null);
g.drawImage(icon2.getImage(), 0, 10, null);
super.paintComponent(g);
}
};

GridBagConstraints a = new GridBagConstraints();


//create menulist

//Feild
String[] gameMenulist = {"New Game","Abouts","how to play","Options","Exit"};
menulist= new JList(gameMenulist);
ListSelectionModel menulistModel = menulist.getSelectionModel();

//menulist setting
menulist.setSelectionMode(ListSelectionModel.SINGL E_INTERVAL_SELECTION);
menulist.setLayoutOrientation(JList.HORIZONTAL_WRA P);
menulist.setVisibleRowCount(-1);
menulist.setBackground(Color.BLACK);
menulist.setForeground(Color.WHITE);
menulist.addMouseListener(this);
panel.add(menulist, a);

panel.setOpaque( false );
panel.setPreferredSize( new Dimension(400, 400) );
getContentPane().add(panel);
}

public void mouseClicked(MouseEvent e) {
switch(menulist.getSelectedIndex()){
case 0:
frame.setSize(300,300);
case 1:
frame.setSize(600,600);
}

}
public void createGUI(){
frame = new GameMenu();
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOS E);
frame.setSize(600, 600);
frame.setLocationRelativeTo( null );
frame.setVisible(true);
}

public static void main(String [] args){
createGUI();
}

}

[pegitha]

It does not even compile. Are you not getting a compilation error when you start it?
In main you call createGui() and I am seeing this error:
Cannot make a static reference to non-static method createGui().
Instantiate the class in main and in the constructor call createGui();

[pegitha]

Also there are unimplemented methods from the MouseListener.

[levent]

Try making createUI method static.

Instead of:

public void createGUI(){
...

write

public static void createGUI(){
...

And as Pegitha mentioned, you should implement all methods of MouseListener.

Add following lines somewhere inside class to do that:

void mouseClicked(MouseEvent e) {};
void mouseEntered(MouseEvent e) {};
void mouseExited(MouseEvent e) {};
void mousePressed(MouseEvent e) {};
void mouseReleased(MouseEvent e) {};

It should work in that way.

[CaptainMorgan]

Granted this thread is mighty old, but I figured I'd post in case anyone was looking
for it for whatever reason.

...

void mouseClicked(MouseEvent e) {};
void mouseEntered(MouseEvent e) {};
void mouseExited(MouseEvent e) {};
void mousePressed(MouseEvent e) {};
void mouseReleased(MouseEvent e) {};

...

The following above methods need the keyword public in front of each method's void return type. Thus:

public void mouseClicked(MouseEvent e) {}; // <-- Already implemented
public void mouseEntered(MouseEvent e) {};
public void mouseExited(MouseEvent e) {};
public void mousePressed(MouseEvent e) {};
public void mouseReleased(MouseEvent e) {};

Also, make sure the frame variable is now static as a result:

  static GameMenu frame;

And watch out for the general spelling errors too that caused some compilation errors when I first ran it.