Mobile Number Validation

Mobile Number Acceptes 10 digits onlty1

For that Sample code


**********************************************************************************

   private void phnoKeyReleased(java.awt.event.KeyEvent evt) {
        // TODO add your handling code here:
        try {
          
         String s = phno.getText();
       
         if(s.length()>10)
         {
         s = s.substring(0, 10);
         phno.setText(s);
       
         }
          
          
        } catch (Exception e) {
          
            e.printStackTrace();
        }
    }


**********************************************************************************

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package X;

/**
 *
 * @author GB16
 */
public class NewJFrame extends javax.swing.JFrame {

    /**
     * Creates new form NewJFrame
     */
    public NewJFrame() {
        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.
     */
    @SuppressWarnings("unchecked")
    // <editor-fold defaultstate="collapsed" desc="Generated Code">
    private void initComponents() {

        phno = new javax.swing.JTextField();

        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
        getContentPane().setLayout(null);

        phno.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                phnoActionPerformed(evt);
            }
        });
        phno.addKeyListener(new java.awt.event.KeyAdapter() {
            public void keyReleased(java.awt.event.KeyEvent evt) {
                phnoKeyReleased(evt);
            }
        });
        getContentPane().add(phno);
        phno.setBounds(140, 80, 320, 30);

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

    private void phnoActionPerformed(java.awt.event.ActionEvent evt) {
        // TODO add your handling code here:
    }

    private void phnoKeyReleased(java.awt.event.KeyEvent evt) {
        // TODO add your handling code here:
        try {
           
         String s = phno.getText();
        
         if(s.length()>10)
         {
         s = s.substring(0, 10);
         phno.setText(s);
        
         }
           
           
        } catch (Exception e) {
           
            e.printStackTrace();
        }
    }

    /**
     * @param args the command line arguments
     */
    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(NewJFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (InstantiationException ex) {
            java.util.logging.Logger.getLogger(NewJFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (IllegalAccessException ex) {
            java.util.logging.Logger.getLogger(NewJFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (javax.swing.UnsupportedLookAndFeelException ex) {
            java.util.logging.Logger.getLogger(NewJFrame.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() {
                new NewJFrame().setVisible(true);
            }
        });
    }
    // Variables declaration - do not modify
    private javax.swing.JTextField phno;
    // End of variables declaration
}