Moving cursor to another TextField & Max. Frame.

Question

Hi All.
I have 2 questions reffer to the following code.
1. How to move cursor from tffirstname to tflastname, tfaddress and tfphone
with use Enter key press on the keyboard?
2. At the first run time i want the form size automatically have a Maximum
Window, how to do it?
Thank a lot.
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class DataInput01
     JFrame frm = new JFrame("Input Personal Data");
     Container pane;
     JLabel     lbfirstname,
               lblastname,
               lbaddress,
               lbphone;
     JTextField      tffirstname,
                    tflastname,
                    tfaddress,
                    tfphone;
     JButton btok,
               btcancel;
     public DataInput01()
          lbfirstname = new JLabel("First Name :");
          lblastname = new JLabel("Last Name :");
          lbaddress = new JLabel("Address :");
          lbphone = new JLabel("Phone :");
          tffirstname = new JTextField(15);
          tflastname = new JTextField(15);
          tfaddress = new JTextField(15);
          tfphone = new JTextField(15);
          btok = new JButton("Submit");
          btcancel = new JButton("Go Home");
          pane = frm.getContentPane();
          pane.setLayout(new FlowLayout(FlowLayout.LEFT, 10, 10));
          pane.add(lbfirstname);
          pane.add(tffirstname);
          pane.add(lblastname);
          pane.add(tflastname);
          pane.add(lbaddress);
          pane.add(tfaddress);
          pane.add(lbphone);
          pane.add(tfphone);
          pane.add(btok);
          pane.add(btcancel);
          frm.setBounds(0, 0, 280, 200);
          frm.setResizable(false);
          frm.setContentPane(pane);
          frm.setVisible(true);
          frm.setDefaultCloseOperation(JFrame.DO_NOTHING_ON_CLOSE);
          btcancel.addActionListener(new ActionListener()
          { public void actionPerformed(ActionEvent e)
     { System.exit(0);}
     public static void main(String args[])
          new DataInput01();
}

Answer 1

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
class DataInput01
JFrame frm = new JFrame("Input Personal Data");
Container pane;
JLabel lbfirstname,
lblastname,
lbaddress,
lbphone;
JTextField tffirstname,
tflastname,
tfaddress,
tfphone;
JButton btok,
btcancel;
public DataInput01()
lbfirstname = new JLabel("First Name :");
lblastname = new JLabel("Last Name :");
lbaddress = new JLabel("Address :");
lbphone = new JLabel("Phone :");
tffirstname = new JTextField(15);
tflastname = new JTextField(15);
tfaddress = new JTextField(15);
tfphone = new JTextField(15);
btok = new JButton("Submit");
btcancel = new JButton("Go Home");
pane = frm.getContentPane();
pane.setLayout(new FlowLayout(FlowLayout.LEFT, 10, 10));
pane.add(lbfirstname);
pane.add(tffirstname);
pane.add(lblastname);
pane.add(tflastname);
pane.add(lbaddress);
pane.add(tfaddress);
pane.add(lbphone);
pane.add(tfphone);
pane.add(btok);
pane.add(btcancel);
//changes
java.util.Set forwardKeys = new java.util.HashSet();
forwardKeys.add(KeyStroke.getKeyStroke(KeyEvent.VK_TAB,0));
forwardKeys.add(KeyStroke.getKeyStroke(KeyEvent.VK_ENTER,0));
pane.setFocusTraversalKeys(KeyboardFocusManager.FORWARD_TRAVERSAL_KEYS,forwardKeys);
//frm.setBounds(0, 0, 280, 200);
frm.setExtendedState(JFrame.MAXIMIZED_BOTH);
//frm.setResizable(false);
//end changes
frm.setContentPane(pane);
frm.setVisible(true);
frm.setDefaultCloseOperation(JFrame.DO_NOTHING_ON_CLOSE);
btcancel.addActionListener(new ActionListener()
{ public void actionPerformed(ActionEvent e)
{ System.exit(0);}
public static void main(String args[])
new DataInput01();
}