Thread: HELP,java problem *java.lang.NullPointerException*

error.jpg

what's the mean of "Exception in thread "main" java.lang.NullPointerException"

and when i was tryin Clean and Build my project the another message was appear

*To run this application from the command line without Ant,try:
java -jar "D:\Encoding\AppPenjualanMotor\AplikasiPenjualanMo tor\dist\AplikasiPenjualanMotor.jar*

help me fix this one please

error.jpg

this the code from main.java

package Agung;
import java.util.logging.Level;
import java.util.logging.Logger;
 
public class Main {
 
    public static void main(String[] args) {
        // TODO code application logic here
       LaunchProgressBar lp = new LaunchProgressBar();
        lp.setVisible(true);
        for(int i=0;i<=100;i++){
            try {
                lp.getProgressBar().setValue(i);
                Thread.sleep(30);
            }catch (InterruptedException ex){
                Logger.getLogger(LaunchProgressBar.class.getName()).log(Level.SEVERE,null,ex);
            }
        }
 
        lp.dispose();
        Login jFL = new Login();
        jFL.setVisible(true);
    }
 
 
}

this from LaunchProgressBar.java

package Agung;
import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.Toolkit;
import javax.swing.ImageIcon;
import javax.swing.JComponent;
import javax.swing.JProgressBar;
import javax.swing.plaf.PanelUI;
 
public class LaunchProgressBar extends javax.swing.JDialog {
    public LaunchProgressBar() {
        setUndecorated(true);
        initComponents();
        this.setAlwaysOnTop(true);
        SplashPanel.setUI(new BgSplash());
        Dimension dim = Toolkit.getDefaultToolkit().getScreenSize();
        int x = (dim.width-getWidth())/2;
        int y = (dim.height-getHeight())/2;
        setLocation(x,y);
        ProgressBar.setStringPainted(true);
    }
public JProgressBar getProgressBar() {
    return ProgressBar;
}
 
    /** This method is called from within the constructor to
     * initialize the form.
     * WARNING: Do NOT modify this code. The content of this method is
     * always regenerated by the Form Editor.
     */
    @SuppressWarnings("unchecked")
    // <editor-fold defaultstate="collapsed" desc="Generated Code">                          
    private void initComponents() {
 
        SplashPanel = new javax.swing.JPanel();
        jLabel1 = new javax.swing.JLabel();
        jLabel2 = new javax.swing.JLabel();
        ProgressBar = new javax.swing.JProgressBar();
        jLabel3 = new javax.swing.JLabel();
        jLabel4 = new javax.swing.JLabel();
 
        setDefaultCloseOperation(javax.swing.WindowConstants.DISPOSE_ON_CLOSE);
 
        SplashPanel.setBackground(new java.awt.Color(153, 153, 153));
 
        jLabel1.setFont(new java.awt.Font("Tahoma", 0, 18)); // NOI18N
        jLabel1.setText("Aplikasi Penjualan Motor");
 
        jLabel2.setText("V.1.0.0");
 
        jLabel3.setText("Loading...");
 
        jLabel4.setText("Design by : Agung R");
 
        javax.swing.GroupLayout SplashPanelLayout = new javax.swing.GroupLayout(SplashPanel);
        SplashPanel.setLayout(SplashPanelLayout);
        SplashPanelLayout.setHorizontalGroup(
            SplashPanelLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addComponent(ProgressBar, javax.swing.GroupLayout.DEFAULT_SIZE, 395, Short.MAX_VALUE)
            .addGroup(SplashPanelLayout.createSequentialGroup()
                .addContainerGap()
                .addComponent(jLabel3)
                .addContainerGap(336, Short.MAX_VALUE))
            .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, SplashPanelLayout.createSequentialGroup()
                .addContainerGap(229, Short.MAX_VALUE)
                .addComponent(jLabel4)
                .addGap(68, 68, 68))
            .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, SplashPanelLayout.createSequentialGroup()
                .addContainerGap(102, Short.MAX_VALUE)
                .addComponent(jLabel1)
                .addGap(100, 100, 100))
            .addGroup(SplashPanelLayout.createSequentialGroup()
                .addGap(179, 179, 179)
                .addComponent(jLabel2)
                .addContainerGap(180, Short.MAX_VALUE))
        );
        SplashPanelLayout.setVerticalGroup(
            SplashPanelLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(SplashPanelLayout.createSequentialGroup()
                .addGap(37, 37, 37)
                .addComponent(jLabel1)
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                .addComponent(jLabel2)
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, 140, Short.MAX_VALUE)
                .addComponent(jLabel3)
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                .addComponent(ProgressBar, javax.swing.GroupLayout.PREFERRED_SIZE, 29, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                .addComponent(jLabel4)
                .addGap(12, 12, 12))
        );
 
        javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
        getContentPane().setLayout(layout);
        layout.setHorizontalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addComponent(SplashPanel, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
        );
        layout.setVerticalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addComponent(SplashPanel, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
        );
 
        pack();
    }// </editor-fold>                        
 
    /**
    * @param args the command line arguments
    */
 
 
    // Variables declaration - do not modify                     
    private javax.swing.JProgressBar ProgressBar;
    private javax.swing.JPanel SplashPanel;
    private javax.swing.JLabel jLabel1;
    private javax.swing.JLabel jLabel2;
    private javax.swing.JLabel jLabel3;
    private javax.swing.JLabel jLabel4;
    // End of variables declaration                   
}
 
class BgSplash extends PanelUI {
ImageIcon background = new ImageIcon(getClass().getResource("/Agung/images/loading.gif"));
@Override
public void paint(Graphics g, JComponent c) {
        g.drawImage(background.getImage(), 0, 0, null);
    }
}

when i run this,i got :
Exception in thread "main" java.lang.NullPointerException
at javax.swing.ImageIcon.<init>(ImageIcon.java:205)
at Agung.BgSplash.<init>(LaunchProgressBar.java:123)
at Agung.LaunchProgressBar.<init>(LaunchProgressBar.j ava:15)
at Agung.Main.main(Main.java:9)
BUILD STOPPED (total time: 3 seconds)

when i clean and build this project,i got this :
init:
deps-clean:
Updating property file: D:\Encoding\AppPenjualanMotor\AplikasiPenjualanMot or\build\built-clean.properties
Deleting directory D:\Encoding\AppPenjualanMotor\AplikasiPenjualanMot or\build
clean:
init:
deps-jar:
Created dir: D:\Encoding\AppPenjualanMotor\AplikasiPenjualanMot or\build
Updating property file: D:\Encoding\AppPenjualanMotor\AplikasiPenjualanMot or\build\built-jar.properties
Created dir: D:\Encoding\AppPenjualanMotor\AplikasiPenjualanMot or\build\classes
Created dir: D:\Encoding\AppPenjualanMotor\AplikasiPenjualanMot or\build\empty
Compiling 5 source files to D:\Encoding\AppPenjualanMotor\AplikasiPenjualanMot or\build\classes
Note: D:\Encoding\AppPenjualanMotor\AplikasiPenjualanMot or\src\Agung\Login.java uses or overrides a deprecated API.
Note: Recompile with -Xlint:deprecation for details.
Copying 8 files to D:\Encoding\AppPenjualanMotor\AplikasiPenjualanMot or\build\classes
compile:
Created dir: D:\Encoding\AppPenjualanMotor\AplikasiPenjualanMot or\dist
Building jar: D:\Encoding\AppPenjualanMotor\AplikasiPenjualanMot or\dist\AplikasiPenjualanMotor.jar
Copy libraries to D:\Encoding\AppPenjualanMotor\AplikasiPenjualanMot or\dist\lib.
To run this application from the command line without Ant, try:
java -jar "D:\Encoding\AppPenjualanMotor\AplikasiPenjualanMo tor\dist\AplikasiPenjualanMotor.jar"
jar:
BUILD SUCCESSFUL (total time: 5 seconds)

help me please