Alpha/src/D_Test.java

public class D_Test {
    import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
    public class NewStudent {
        public static void main(String[] args){
            NewStudent st=new NewStudent();
        }

        public NewStudent(){
            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");
                }
            });
        }
}