Cara Fix Error java.lang.NullPointerException ketika Menampilkan Image dari database

Selalu muncul Error java.lang.NullPointerException

cara Fixnya gmn ya ?

ini kodingan saya

 package tes2;

import java.awt.Image;
import java.awt.Toolkit;
import java.io.*;
import java.sql.*;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.swing.ImageIcon;

public class TampilGambar extends javax.swing.JFrame
{
    byte b[];
    Blob blob;
    ImageIcon icon;
    String nama;

    void muncul() throws Exception
    {
        try{
            Class.forName("com.mysql.jdbc.Driver");
            Connection con=DriverManager.getConnection("jdbc:mysql://localhost/tesblob","root","");

            File file=new File("src/10.jpg");
            FileOutputStream fos=new FileOutputStream(file);

            PreparedStatement ps=con.prepareStatement("select * from tes1 where no=1");
            ResultSet rs=ps.executeQuery();

            while(rs.next())
            {
                nama = rs.getString("nama");
                blob=rs.getBlob("foto");
                b=blob.getBytes(1,(int)blob.length());
                Image img = Toolkit.getDefaultToolkit().createImage(b);
                icon = new ImageIcon(img);
                label.setIcon(icon);
                label.setText(nama);
                fos.write(b);
            }

            ps.close();
            fos.close();
            con.close();
        }catch(Exception e){
            e.printStackTrace();
        }
    }


    public TampilGambar() throws Exception
    {
        muncul();
        initComponents();
    }


    @SuppressWarnings("unchecked")
    // <editor-fold defaultstate="collapsed" desc="Generated Code">
    private void initComponents() {

        label = new javax.swing.JLabel();

        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);

        label.setFont(new java.awt.Font("Tahoma", 1, 14)); // NOI18N
        label.setIcon(icon);
        label.setText(nama);

        javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
        getContentPane().setLayout(layout);
        layout.setHorizontalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addGap(29, 29, 29)
                .addComponent(label)
                .addContainerGap(278, Short.MAX_VALUE))
        );
        layout.setVerticalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addGap(33, 33, 33)
                .addComponent(label)
                .addContainerGap(250, Short.MAX_VALUE))
        );

        pack();
    }// </editor-fold>

    public static void main(String args[])
    {
        /* Set the Nimbus look and feel */
        //<editor-fold defaultstate="collapsed" desc=" Look and feel setting code (optional) ">
        /* If Nimbus (introduced in Java SE 6) is not available, stay with the default look and feel.
         * For details see http://download.oracle.com/javase/tutorial/uiswing/lookandfeel/plaf.html
         */
        try {
            for (javax.swing.UIManager.LookAndFeelInfo info : javax.swing.UIManager.getInstalledLookAndFeels()) {
                if ("Nimbus".equals(info.getName())) {
                    javax.swing.UIManager.setLookAndFeel(info.getClassName());
                    break;
                }
            }
        } catch (ClassNotFoundException ex) {
            java.util.logging.Logger.getLogger(TampilGambar.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (InstantiationException ex) {
            java.util.logging.Logger.getLogger(TampilGambar.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (IllegalAccessException ex) {
            java.util.logging.Logger.getLogger(TampilGambar.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (javax.swing.UnsupportedLookAndFeelException ex) {
            java.util.logging.Logger.getLogger(TampilGambar.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        }
        //</editor-fold>

        /* Create and display the form */
        java.awt.EventQueue.invokeLater(new Runnable()
        {
            public void run()
            {
                try {
                    new TampilGambar().setVisible(true);
                } catch (Exception ex) {
                    Logger.getLogger(TampilGambar.class.getName()).log(Level.SEVERE, null, ex);
                }
            }
        });
    }

    // Variables declaration - do not modify
    private javax.swing.JLabel label;
    // End of variables declaration
}

Outputnya :

Errornya :

 java.lang.NullPointerException
	at tes2.TampilGambar.muncul(TampilGambar.java:37)
	at tes2.TampilGambar.<init>(TampilGambar.java:54)
	at tes2.TampilGambar$1.run(TampilGambar.java:123)
	at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:311)
	at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:756)
	at java.awt.EventQueue.access$500(EventQueue.java:97)
	at java.awt.EventQueue$3.run(EventQueue.java:709)
	at java.awt.EventQueue$3.run(EventQueue.java:703)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:80)
	at java.awt.EventQueue.dispatchEvent(EventQueue.java:726)
	at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:201)
	at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116)
	at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:105)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93)
	at java.awt.EventDispatchThread.run(EventDispatchThread.java:82)
BUILD SUCCESSFUL (total time: 37 seconds)

Spek : 1. Netbeans 8.2 2. JDK & JRE 8 3. Xampp