Java WindowBuilder -> Export as .jar (Runnable or Applet)

问题

I installed the WindowBuilder Plugin for Eclipse 3.7.

I created a very simple GUI with various methods (JFrame, JPanel, Application etc.). I tried to Export my Project as a runnable JAR / a .jar file. I have to choose the Main Class: It does not show anything to select! The Export still works but the file is useless.

How do I export my GUI class properly?

EDIT: Seems I need a main method to make the class show up in the main class list. But the problem is, that WindowBuilder creates a class like this:

import javax.swing.JApplet;
import javax.swing.JButton;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;


public class myGuiClass extends JApplet {

    /**
     * Create the applet.
     */
    public myGuiClass() {
        getContentPane().setLayout(null);

        JButton btnMybutton = new JButton("myButton");
        btnMybutton.addMouseListener(new MouseAdapter() {
            @Override
            public void mouseClicked(MouseEvent arg0) {
                System.out.println("Button pressed!");
            }
        });
        btnMybutton.setBounds(10, 11, 91, 23);
        getContentPane().add(btnMybutton);

    }
}

If I create a main method here, I cannot create my JApplet, as it it not allowed to reference its non-static constructor in the static main method. At least I dont know how to do it. So how would I go about exporting this very simple one class program to a runnable .jar or an applet?

@Andrew: The "Application" meant one of the options in the WindowBuilder->Swing Designer menu. which is in fact called Application Window, and there are also JApplet, JFrame, JDialog and so on. I would like to have something executable that I can bring to another PC or run via web, so I dont have to deal with crude executing things with the cmd window...

回答1:

Try this, this is the way to create a jar or runnable jar in eclipse, all your external libraries in the project will be included

File -> Export-> Java ->Runnbale JAR file

Launch configuration : your Class containing the public static void main(String[] args)

Export destination : Target place

Library Handling:

Package required libraries into generated JAR

FINISH

回答2:

Try this code - works as either applet or free floating (frame based) app.

import java.awt.FlowLayout;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.border.EmptyBorder;

/** This is an hybrid application/applet.  It can be run
 * as either a JFrame or JApplet. */
public class MyGuiApp extends JApplet {

    /** Construct the GUI for an applet. */
    public void init() {
        try {
            SwingUtilities.invokeAndWait( new Runnable() {
                public void run() {
                    GUI gui = new GUI();
                    getContentPane().add(gui.getGui());
                }
            });
        } catch(Exception e) {
            e.printStackTrace();
        }
    }

    /** Launch the GUI in a frame. */
    public static void main(String[] args) {
        SwingUtilities.invokeLater(new Runnable(){
            @Override 
            public void run() {
                JFrame f = new JFrame("My GUI");
                f.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
                GUI gui = new GUI();
                f.getContentPane().add(gui.getGui());
                f.pack();
                f.setLocationByPlatform(true);
                f.setVisible(true);
            }
        });
    }
}

class GUI {

    public JComponent getGui() {
        // Use layouts! ..
        JPanel p = new JPanel(new FlowLayout(FlowLayout.LEADING));
        // ..possibly with borders.
        p.setBorder(new EmptyBorder(10,10,10,10));

        JButton btnMybutton = new JButton("myButton");
        btnMybutton.addMouseListener(new MouseAdapter() {
            @Override
            public void mouseClicked(MouseEvent arg0) {
                System.out.println("Button pressed!");
            }
        });
        p.add(btnMybutton);
        return p;
    }
}

来源：https://stackoverflow.com/questions/10826141/java-windowbuilder-export-as-jar-runnable-or-applet

标签

java

swing

user-interface

jar

executable