title: Netbeans - button function illegal start of expression
body: <p>I created a JFrame form and put a button on it, then created an actionformed inside source.  Program gives an error like <strong>illegal start expression</strong></p>
  
  <pre><code> private void jButton2ActionPerformed(java.awt.event.ActionEvent evt) {                                         
      // TODO add your handling code here:
      System.exit(0);
  }                  
  </code></pre>
  
  <p>By the way, 
  Before creating an actionformed for button, main function had the same error. When I created actionformed for button, it disappeared and program showed that error in button function.</p>
  
  <p>Here is my main function</p>
  
  <pre><code>    public static void main(String args[]) {
      /* Set the Nimbus look and feel */
      //&lt;editor-fold defaultstate="collapsed" desc=" Look and feel setting code (optional) "&gt;
      /* 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(Login.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
      } catch (InstantiationException ex) {
          java.util.logging.Logger.getLogger(Login.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
      } catch (IllegalAccessException ex) {
          java.util.logging.Logger.getLogger(Login.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
      } catch (javax.swing.UnsupportedLookAndFeelException ex) {
          java.util.logging.Logger.getLogger(Login.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
      }
      //&lt;/editor-fold&gt;
  
      /* Create and display the form */
      java.awt.EventQueue.invokeLater(() -&gt; {
          Login dialog = new Login(new javax.swing.JFrame(), true); 
          dialog.addWindowListener(new java.awt.event.WindowAdapter() {
  
              @Override
             public void windowClosing(java.awt.event.WindowEvent e) {
                 System.exit(0);
             } 
          });
          dialog.setVisible(true);
  
      });
  }
  </code></pre>