how to….Executable jar File

Hướng dẫn tạo file jar khả thi, double click là chạy như file exe

download Demo

1> tao ung dung mau nhu sau:

import javax.swing.JLabel;
import javax.swing.JTextField;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;

public class FormDemo extends JPanel
{
public FormDemo()
{
add(new JLabel(“Label ne”));
add(new JTextField(20));
add(new JButton(“Button day”));
}

public static void main(String args[])
{
JFrame f= new JFrame();
f.setContentPane(new FormDemo());
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
f.setTitle(“Dong goi ung dung java -> executable jar file”);
f.pack();
f.setVisible(true);
}
}

2> compile: javac FormDemo.java

3> tao thu muc META-INF

4> tao file MANIFEST.MF nam trong thu muc META-INF

dong so 1: Manifest-Version: 1.0
dong so 2: Created-By: 1.6.0_05 (Sun Microsystems Inc.)
dong so 3: Main-Class: FormDemo
dong so 4:
(dong so 4 la 1 dong trong)

5> jar cvMf Demo.jar META-INF *.class

Luu y:
buoc 4:
- sau main-class: phai co 1 khoang trang
- duoi dong main-class phai co 1 dong trang
buoc 5:
- tuy chon nay: cvmf khong the tao ra file thuc thi
- tuy chon dung de tao file thuc thi jar: cvMf

* Neu class nam trong 1 package thi sao? vi du: FormDemo nam trong com.app.jguru

1. bien dich: javac -d . FormDemo.java

2. sau khi bien dich se phat sinh thu muc com

3. file MANIFEST.MF: Main-Class: com.app.jguru.FormDemo

4. build jar: jar cvMf Demo.jar META-INF com