Problemas acho que é no jdk

tenho o seguinte código básico um JFrame:

/*

• Tela.java
• Created on 19 de Setembro de 2007, 20:06
  */

package Exemplos;

/**
*

• @author walter
  */
  public class Tela extends javax.swing.JFrame {

  /** Creates new form Tela */
  
  public Tela() {
  
  initComponents();
  
  }
  

  /** 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.
    
    */
    
    // 
    
    private void initComponents() {
    
    jLabel1 = new javax.swing.JLabel();
    
    jTextField1 = new javax.swing.JTextField();
    
    jButton1 = new javax.swing.JButton();
    
    jButton2 = new javax.swing.JButton();
    

    setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
    jLabel1.setText(“DIGITE O SEU NOME:”);

    jButton1.setText(“MOSTRAR”);

    jButton2.setText(“SAIR”);
    
    jButton2.addActionListener(new java.awt.event.ActionListener() {
    
    public void actionPerformed(java.awt.event.ActionEvent evt) {
    
    jButton2ActionPerformed(evt);
    
    }
    
    });
    

    org.jdesktop.layout.GroupLayout layout = new org.jdesktop.layout.GroupLayout(getContentPane());
    
    getContentPane().setLayout(layout);
    
    layout.setHorizontalGroup(
    
    layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
    
    .add(layout.createSequentialGroup()
    
    .addContainerGap()
    
    .add(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
    
    .add(layout.createSequentialGroup()
    
    .add(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
    
    .add(jTextField1, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, 380, Short.MAX_VALUE)
    
    .add(jLabel1))
    
    .addContainerGap())
    
    .add(layout.createSequentialGroup()
    
    .add(jButton1)
    
    .addPreferredGap(org.jdesktop.layout.LayoutStyle.RELATED, 206, Short.MAX_VALUE)
    
    .add(jButton2)
    
    .add(40, 40, 40))))
    
    );
    
    layout.setVerticalGroup(
    
    layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
    
    .add(layout.createSequentialGroup()
    
    .addContainerGap()
    
    .add(jLabel1)
    
    .addPreferredGap(org.jdesktop.layout.LayoutStyle.RELATED)
    
    .add(jTextField1, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
    
    .add(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
    
    .add(layout.createSequentialGroup()
    
    .add(18, 18, 18)
    
    .add(jButton1))
    
    .add(layout.createSequentialGroup()
    
    .add(31, 31, 31)
    
    .add(jButton2)))
    
    .addContainerGap(196, Short.MAX_VALUE))
    
    );
    
    pack();
    
    }//
    

  private void jButton2ActionPerformed(java.awt.event.ActionEvent evt) {
  
  System.exit(0);
  
  }
  

  /**

  • @param args the command line arguments
    */
    public static void main(String args[]) {
    java.awt.EventQueue.invokeLater(new Runnable() {
    public void run() {
    new Tela().setVisible(true);
    }
    });
    }

  // Declaração de variáveis - não modifique
  
  private javax.swing.JButton jButton1;
  
  private javax.swing.JButton jButton2;
  
  private javax.swing.JLabel jLabel1;
  
  private javax.swing.JTextField jTextField1;
  
  // Fim da declaração de variáveis
  

}

ele compila tudo certo, mas quando vou executar com o netbeans ele da o seguinte erro:

init:

deps-jar:

compile:  java.lang.UnsupportedClassVersionError: Bad version number in .class file

at java.lang.ClassLoader.defineClass1(Native Method)

at java.lang.ClassLoader.defineClass(ClassLoader.java:620)

at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:124)

at java.net.URLClassLoader.defineClass(URLClassLoader.java:260)

at java.net.URLClassLoader.access$100(URLClassLoader.java:56)

at java.net.URLClassLoader$1.run(URLClassLoader.java:195)

at java.security.AccessController.doPrivileged(Native Method)

at java.net.URLClassLoader.findClass(URLClassLoader.java:188)

at java.lang.ClassLoader.loadClass(ClassLoader.java:306)

at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:268)

at java.lang.ClassLoader.loadClass(ClassLoader.java:251)

at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:319)

Exception in thread “main”

Java Result: 1

debug:

EXECUTADO COM SUCESSO (tempo total: 3 segundos)

Passei o dia inteiro tentanto resolver, acho que é problema no jdk 1.5 deletei instalei novos e nada, mudei a variavel Path com o caminho certo do diretorio do jdk e nada…

Se alguem puder me dar uma ajuda agradeço…

WM