Thread: please help, simple problem

hi completely new here, and semi new to java programming i apologies if this is completely off what i want it to be doing, I'm trying to get an input of a date in the format of dd/mm/yyy and once the enter button is pressed it grabs the day then output its in the jTextFieldOutput.

i think I'm completely off on what i meant to be doing, so i apologies if this makes you laugh

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
 
/*
 * JFrame.java
 *
 * Created on Nov 13, 2011, 1:44:14 PM
 */
package date;
 
import javax.swing.JOptionPane;
/**
 *
 * @author grandmstramrod
 */
public class JFrame extends javax.swing.JFrame {
 
    public String name;
    private boolean day,month,year;
 
    /** Creates new form JFrame */
    public JFrame() {
        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() {
 
        jTextFieldInput = new javax.swing.JTextField();
        jButtonEnter = new javax.swing.JButton();
        jTextFieldOutput = new javax.swing.JTextField();
 
        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
        setBackground(new java.awt.Color(153, 153, 153));
 
        jTextFieldInput.setText("jTextField1");
 
        jButtonEnter.setText("jButton1");
        jButtonEnter.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jButtonEnterActionPerformed(evt);
            }
        });
 
        jTextFieldOutput.setText("jTextField2");
 
        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()
                .add(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.TRAILING, false)
                    .add(org.jdesktop.layout.GroupLayout.LEADING, layout.createSequentialGroup()
                        .add(88, 88, 88)
                        .add(jTextFieldInput))
                    .add(org.jdesktop.layout.GroupLayout.LEADING, layout.createSequentialGroup()
                        .add(91, 91, 91)
                        .add(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.TRAILING, false)
                            .add(org.jdesktop.layout.GroupLayout.LEADING, jTextFieldOutput)
                            .add(org.jdesktop.layout.GroupLayout.LEADING, jButtonEnter, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, 187, Short.MAX_VALUE))))
                .addContainerGap())
        );
        layout.setVerticalGroup(
            layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
            .add(layout.createSequentialGroup()
                .addContainerGap()
                .add(jTextFieldInput, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, 47, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
                .add(18, 18, 18)
                .add(jButtonEnter, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, 63, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
                .add(11, 11, 11)
                .add(jTextFieldOutput, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, 54, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
                .addContainerGap(99, Short.MAX_VALUE))
        );
 
        pack();
    }// </editor-fold>
 
    private void jButtonEnterActionPerformed(java.awt.event.ActionEvent evt) {
 
        name=jTextFieldInput.getText();
 
name = subName (day, month, year);
 
checkinput();
jTextFieldOutput.setText("the day is" + day );
 
// TODO add your handling code here:
    }
 
    /**
     * @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(JFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (InstantiationException ex) {
            java.util.logging.Logger.getLogger(JFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (IllegalAccessException ex) {
            java.util.logging.Logger.getLogger(JFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (javax.swing.UnsupportedLookAndFeelException ex) {
            java.util.logging.Logger.getLogger(JFrame.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 JFrame().setVisible(true);
            }
        });
    }
    // Variables declaration - do not modify
    private javax.swing.JButton jButtonEnter;
    private javax.swing.JTextField jTextFieldInput;
    private javax.swing.JTextField jTextFieldOutput;
    // End of variables declaration
 
 
 
  public void checkinput(){
 
    String subName =  jTextFieldInput.getText(); 
 
    if (subName.isEmpty()){
            JOptionPane.showMessageDialog(null,subName,"is empty",JOptionPane.ERROR_MESSAGE);
 
        }else{
   try {
             day = dateFormat.parse (jTextFieldInput.getText());
              = Integer.parseInt (jTextFieldOutput.getText());
             } catch (NumberFormatException n) {
            subName (day);

ps the code is not complete...

Do you have any specific questions about your code?
Please ask them.

Where are you getting input from the user?

do apologies guys, relalised that i needed to sub string the input to be able to create an output while on the way to work, sorry to waste your time but sure my code will need emending when i update it tomorrow.

apologies