Wednesday, December 5, 2007

Create Executable Jar File

Create MyClass.java
import java.awt.*;
import java.awt.event.*;

public class MyClass {
public static void main(String[] args) {
Frame f = new Frame();
f.addWindowListener
(new WindowAdapter() {
public void windowClosing(WindowEvent e) {
System.exit(0);
}
}
);
f.add(new Label("Hello world"));
f.setSize(200,200);
f.setVisible(true);
}
}

cmd: Path:> javac MyClass.java

Create manifest.mft using notepad

Manifest-Version: 1.0
Main-Class: MyClass
Class-path: .

Main-Class specifies the entry point with the main(String args[]) method.

The Class-path is used to specify the dependency of this jar (if any). You add the directories and jars separated by a space. It is important because when running a jar , the CLASSPATH definition (as defined by the environnement variable) is overridden.

cmd: Path:>jar cvfm myjar.jar manifest.mft *.class

cmd: Path:>java -jar myjar.jar


myjar.jar will be created, double-click to run.

2 comments:

srisusindhran said...

thank a lot
very short and precise

arun said...

very nice example
very good