Java display form

To display a form in Java, you can use the javax.swing.JFrame class to create a top-level container for the form, and add form elements such as text fields, buttons, and labels to the frame using layout managers.

Here's an example of how to create a simple login form in Java:

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

public class LoginForm extends JFrame {

    private JTextField usernameField;
    private JPasswordField passwordField;
    private JButton loginButton;

    public LoginForm() {
        // Set the title and size of the frame
        setTitle("Login Form");
        setSize(300, 150);

        // Set the layout to grid layout
        setLayout(new GridLayout(3, 2));

        // Create form elements
        JLabel usernameLabel = new JLabel("Username:");
        usernameField = new JTextField();
        JLabel passwordLabel = new JLabel("Password:");
        passwordField = new JPasswordField();
        loginButton = new JButton("Login");

        // Add form elements to the frame
        add(usernameLabel);
        add(usernameField);
        add(passwordLabel);
        add(passwordField);
        add(new JLabel());  // Add an empty label to take up space
        add(loginButton);

        // Set the frame to exit the program when closed
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

        // Display the frame
        setVisible(true);
    }