import java.awt .*; import javax.swing .*; import java.awt.event .*; public class D_Test1 { public static void main(String[] args) { NewStudent st = new D_Test1(); } public D_Test1() { JFrame frame = new JFrame("STUDENT REGISTRATION FORM"); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame.setSize(800, 600); frame.setVisible(true); JPanel p1 = new JPanel(); p1.setLayout(null); p1.setBackground(Color.CYAN); frame.add(p1); ButtonGroup buttonGroup = new ButtonGroup(); JRadioButton male = new JRadioButton("MALE"); male.setBounds(100, 170, 100, 20); buttonGroup.add(male); p1.add(male); JRadioButton female = new JRadioButton("FEMALE"); female.setBounds(250, 170, 100, 20); buttonGroup.add(female); p1.add(female); JLabel sex = new JLabel("SEX:"); sex.setBounds(10, 200, 100, 20); p1.add(sex); final JTextField gender = new JTextField(); gender.setBounds(100, 200, 300, 20); p1.add(gender); male.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent ie) { gender.setText("MALE"); } }); female.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent ie) { gender.setText("FEMALE"); } }); } }