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Thread: In jar execution I can't see My picture[netbeans,ubuntu]

  1. #1
    Junior Member
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    Jan 2014
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    Default In jar execution I can't see My picture[netbeans,ubuntu]

    I create a program in NetBeans when I run it It works properly and shows my photo but in when I execute jar file (final app) I can't see my photo

    The whole project is in zip file with photo
    import java.awt.*;
    import javax.swing.*;
    public class MyPanel extends JPanel {
        private static final long serialVersionUID = 1L;
        public void paintComponent(Graphics g){
            g.fillRect(0, 0, 200, 300);
            int red = (int)(Math.random()*255);
            int green = (int)(Math.random()*255);
            int blue =(int)(Math.random()*255);
            Color color =new Color(red, green, blue);
            g.fillOval(70, 70, 100, 100);
            Image image = new ImageIcon("netbeans.png").getImage();
            g.drawImage(image, 10, 20, this);
    import java.awt.*;
    import java.awt.event.ActionListener;
    import java.awt.event.ActionEvent;
    import javax.swing.*;
    public class Color*Button implements ActionListener{
        JFrame frame = new JFrame("Color Button Demo");
        JButton button = new JButton("Change circle color behind java logo");
        MyPanel panel = new MyPanel();
        public  void go(){
            frame.setSize(300, 400);
        public void actionPerformed(ActionEvent ae){
    public class ColorButtonApp {
        public static void main(String[] args) {
            ColorButton colorButton = new ColorButton();
    Attached Files Attached Files

  2. #2
    Member andbin's Avatar
    Join Date
    Dec 2013
    Thanked 122 Times in 114 Posts

    Default Re: In jar execution I can't see My picture[netbeans,ubuntu]

    Quote Originally Posted by mohsen.noor View Post
            Image image = new ImageIcon("netbeans.png").getImage();
    The main question is that "netbeans.png" is a specification on the file-system and, more important, it's a relative specification .... relative to the "current" directory.
    What is your current directory when you launch your application-in-jar? I can't know .... it depends. Depends on how/from where you start the java launcher (java.exe o whatever is in other O.S.).

    To be clear: your jar is for example in C:\MyProjects\myapp.jar

    From command prompt you can do:
    C:\MyProjects>java -jar myapp.jar
    C:\>java -jar MyProjects\myapp.jar

    Both commands (in blue) correctly start your jar .... but the "current" directory is different ("C:\MyProjects" the first, "C:\" the second time).

    If your image "belongs" to your application, you should load it as a "resource" using getResource/getResourceAsStream of java.lang.Class.
    If "netbeans.png" is in the same package of MyPanel, you can do:

    ImageIcon ii = new ImageIcon(MyPanel.class.getResource("netbeans.png"));

    And it works even if netbeans.png is into the jar.

    Final note: don't load images (any resource in general) in a paint/paintComponent method.
    Andrea, www.andbin.net SCJP 5 (91%) SCWCD 5 (94%)

    Useful links for Java beginners My new project Java Examples on Google Code

  3. The Following User Says Thank You to andbin For This Useful Post:

    mohsen.noor (January 5th, 2014)

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