Error: <identifier> expected

[barney]

Hi, I am attempting to write a java swing application, the source code follows:

Code:

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

//A generic window Listener
class GenericWindowListener extends WindowAdapter {

	public void windowClosing(WindowEvent event){
	
		System.exit(0);
		
	}//end windowClosing
	
}//end GenericWindowListener

//The class containing my main frame
class MainFrame extends JFrame {

	public MainFrame(){
	
		super("Dictionary");
		
		setSize(500,500);
	
	}//end mainFrame
	
}//end MainFraim

//main class
public class Java_graphic_version {

	MainFrame app=new MainFrame();
	
	app.addWindowListener(new GenericWindowListener());
	
	app.show();

}//end Java_graphic_version

Only the classes currently being instantiated are shown.

For some reason, my IDE shows up two errors. One at the line stating

Code:

app.addWindowListener(new GenericWindowListener());

the other at the line stating

Code:

app.show();

the error for both lines is the same:

Code:

<identifier> expected

The only thing I could possible see that is screwing up is the lack of any JPanel, or any content at all, being placed in the frame, but I don't understand why that should matter.
Thanks.

[hardwired]

Code:

public class Java_graphic_version {
    public static void main(String[] args) {
        MainFrame app=new MainFrame();
        app.addWindowListener(new GenericWindowListener());
        // The show method is deprecated - see api.
//        app.show();
        app.setVisible(true);
    }
}//end Java_graphic_version

[nitinborge5]

hi hardwired

do one thing put your all code in main method from Java_graphic_version

then it will work and there is one more mistake did by u is

import javax

and not java for swing ok,

Code:

public class Java_graphic_version {

	public static void main(String []args)
	{
	MainFrame app=new MainFrame();
	
	app.addWindowListener(new GenericWindowListener());
	
	app.show();
	}

}//end Java_graphic_version