Error running a Java Swing App

[icyisamu]

Tried to compile the following code using javac.

Compiled using Javac. Obtained Interface.class and Interface$1.class
How can I use Jar on the generated classes? Do I need to use a Manifest file to get it done? If so, how?
I tried to set it on Interface class but it isn't working.

(there are some empty codes in there, I plan to add them on later, after this problem is solved.)

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

public class Interface extends JFrame implements ActionListener{

private static int height,width;
private JButton btnClick;

public Interface(){
btnClick = new JButton("Hello World");

getContentPane().add(btnClick);

}

public void actionPerformed( ActionEvent e) {



} // End actionPerformed

public static void main(String args[]){

Interface i = new Interface();
i.setSize(300,300);
i.setVisible(true);

i.addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent e) {
System.exit(0);
}
});

} // End Main

} // End Class

[simon.schmidt]

You don't really need a manifest file, this should work:
jar cf Interface.jar Interface.class
or possibly *.class instead of Interface.class if you have more files

[icyisamu]

You don't really need a manifest file, this should work:
jar cf Interface.jar Interface.class
or possibly *.class instead of Interface.class if you have more files

Hi, I tried as you said, but I got this error:


@desktop:~/Desktop/Java/App# jar cf Interface.jar *.class
@desktop:~/Desktop/Java/App# java -jar Interface.jar
Failed to load Main-Class manifest attribute from Interface.jar

[simon.schmidt]

Hi, I tried as you said, but I got this error:


@desktop:~/Desktop/Java/App# jar cf Interface.jar *.class
@desktop:~/Desktop/Java/App# java -jar Interface.jar
Failed to load Main-Class manifest attribute from Interface.jar


ok, make a file called manifest that contains only :
Main-Class: Interface
and then:
jar cmf manifest myjar.jar *.class

[icyisamu]

It worked!

Thanks alot ;)

[hod139]

For all the goodies on working with Jar files, see http://java.sun.com/docs/books/tutorial/deployment/jar/