import javax.swing.*;
import java.awt.event.*;
class TextFieldExample{
    public static void main(String[] args){
        JFrame f=new JFrame();
        JTextField text=new JTextField(20);
        text.setText("Hello World!");
        text.setEditable(false);

    text.setBounds(10,10,150,20);
    f.setLayout(null);
    f.add(text);
    f.setVisible(true);
    f.setSize(300,100);
  }
}

import javax.swing.*;
import java.awt.event.*;
class TextFieldExample{
    public static void main(String[] args){
        JFrame f=new JFrame();
        final JTextField text=new JTextField(20);
        text.addKeyListener(new KeyAdapter(){
        public void keyReleased(KeyEvent keyEvent) {
        if((text.getText()).equals("")){
        text.setEditable(true);
       }
       else{
        text.setEditable(false);
       }
      }
    });
    text.setBounds(10,10,150,20);
    f.setLayout(null);
    f.add(text);
    f.setVisible(true);
    f.setSize(300,100);
  }
}

import java.awt.*;
import javax.swing.*;
import java.awt.event.*;

class Form extends JFrame
{
JButton ADD;
JPanel panel;
JLabel label1,label2;
final JTextField text1,text2;;
Form(){
label1 = new JLabel();
label1.setText("Name:");
text1 = new JTextField(20);

label2 = new JLabel();
label2.setText("Address:");
text2 = new JTextField(20);

ADD=new JButton("View");

panel=new JPanel(new GridLayout(3,2));
panel.add(label1);
panel.add(text1);
panel.add(label2);
panel.add(text2);
panel.add(ADD);
add(panel);
setTitle("FORM");
ADD.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent ae){
String value1=text1.getText();
String value2=text2.getText();
JFrame f=new JFrame("View Data");
JPanel p=new JPanel(new GridLayout(2,2));
JLabel l1=new JLabel("Name");
JTextField t1 = new JTextField(20);
JLabel l2=new JLabel("Address");
JTextField t2 = new JTextField(20);
t1.setText(value1);
t1.setEditable(false);
t2.setText(value2);
t2.setEditable(false);

p.add(l1);
p.add(t1);
p.add(l2);
p.add(t2);
f.add(p);
f.setVisible(true);
f.pack();
}
});
}
}
class FormDemo
{
public static void main(String arg[])
{
try
{
Form frame=new Form();
frame.pack();
frame.setVisible(true);
}
catch(Exception e)
{
}
}
}