Double-click the jar file in Windows to run the spelling

Window

Here's an example that includes 2 Java files and a mf file:

File 1:frame1.java

Package Testjar;

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

public class Frame1 extends JFrame {
JPanel ContentPane;
BorderLayout borderLayout1 = new BorderLayout ();

Construct the Frame
Public Frame1 () {
EnableEvents (Awtevent.window_event_mask);
try {
Jbinit ();
}
catch (Exception e) {
E.printstacktrace ();
}
}

Component initialization
private void Jbinit () throws Exception {
ContentPane = (JPanel) this.getcontentpane ();
Contentpane.setlayout (BORDERLAYOUT1);
This.setsize (New Dimension (400, 300));
This.settitle ("Frame Title");
}

Overridden so we can exit as window is closed
protected void processWindowEvent (WindowEvent e) {
Super.processwindowevent (e);
if (e.getid () = = windowevent.window_closing) {
System.exit (0);
}
}
}

File 2:app.java

Package Testjar;

Import Javax.swing.UIManager;
Import java.awt.*;

public class App {
Boolean packframe = false;

Construct the application
Public App () {
Frame1 frame = new Frame1 ();
Validate frames that have preset sizes
Pack frames that have useful preferred size info, e.g. from their layout
if (packframe) {
Frame.pack ();
}
else {
Frame.validate ();
}
Center the window
Dimension screensize = Toolkit.getdefaulttoolkit (). Getscreensize ();
Dimension framesize = Frame.getsize ();
if (Framesize.height > Screensize.height) {
Framesize.height = Screensize.height;
}
if (Framesize.width > Screensize.width) {
Framesize.width = Screensize.width;
}
Frame.setlocation ((screensize.width-framesize.width)/2, (Screensize.height-framesize.height)/2);
Frame.setvisible (TRUE);
}

Main method
public static void Main (string[] args) {
try {
Uimanager.setlookandfeel (Uimanager.getsystemlookandfeelclassname ());
}
catch (Exception e) {
E.printstacktrace ();
}
New App ();
}
}

File 3:MANIF.MF

Main-class:testjar. App

Copy the above three files into a directory and use the command line to enter the directory and execute javac-d. *.java, this time will be compiled to generate class files, and then execute JAR-CVFM te.jar manif.mf Testjar, should be turned into a jar file named Te.jar, double-click it, you can see the effect!