Creating GUI components

Creating GUI components in Java involves utilizing the AWT (Abstract Window Toolkit) and Swing libraries. Below, I’ll demonstrate how to create basic GUI components using both AWT and Swing.

1. Creating GUI Components with AWT:

import java.awt.*;

public class AwtExample {
    public static void main(String[] args) {
        // Create a frame
        Frame frame = new Frame("AWT Example");

        // Create a button
        Button button = new Button("Click Me");

        // Create a label
        Label label = new Label("Hello, AWT!");

        // Add components to the frame
        frame.add(button);
        frame.add(label);

        // Set frame properties
        frame.setSize(300, 200);
        frame.setLayout(new FlowLayout());
        frame.setVisible(true);
    }
}

2. Creating GUI Components with Swing:

import javax.swing.*;

public class SwingExample {
    public static void main(String[] args) {
        // Create a frame
        JFrame frame = new JFrame("Swing Example");

        // Create a button
        JButton button = new JButton("Click Me");

        // Create a label
        JLabel label = new JLabel("Hello, Swing!");

        // Add components to the frame
        frame.getContentPane().add(button);
        frame.getContentPane().add(label);

        // Set frame properties
        frame.setSize(300, 200);
        frame.setLayout(new FlowLayout());
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setVisible(true);
    }
}

3. Event Handling in Swing:

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

public class SwingEventHandling {
    public static void main(String[] args) {
        // Create a frame
        JFrame frame = new JFrame("Swing Event Handling");

        // Create a button
        JButton button = new JButton("Click Me");

        // Add ActionListener to the button
        button.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                JOptionPane.showMessageDialog(frame, "Button Clicked!");
            }
        });

        // Add the button to the frame
        frame.getContentPane().add(button);

        // Set frame properties
        frame.setSize(300, 200);
        frame.setLayout(new FlowLayout());
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setVisible(true);
    }
}

4. Layout Managers in Swing:

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

public class SwingLayoutExample {
    public static void main(String[] args) {
        // Create a frame
        JFrame frame = new JFrame("Swing Layout Example");

        // Create buttons
        JButton button1 = new JButton("Button 1");
        JButton button2 = new JButton("Button 2");
        JButton button3 = new JButton("Button 3");

        // Add components to the frame with BorderLayout
        frame.getContentPane().add(button1, BorderLayout.NORTH);
        frame.getContentPane().add(button2, BorderLayout.CENTER);
        frame.getContentPane().add(button3, BorderLayout.SOUTH);

        // Set frame properties
        frame.setSize(300, 200);
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setVisible(true);
    }
}

5. Swing GUI Design Tools:

Many Integrated Development Environments (IDEs) provide GUI builders for visually designing Swing interfaces. For example, in NetBeans or Eclipse, you can use the drag-and-drop interface to create GUI components.

Conclusion:

Creating GUI components in Java involves using the AWT and Swing libraries. AWT provides basic components, while Swing offers a richer set of lightweight and customizable components. Whether building simple applications or complex user interfaces, Java’s GUI libraries provide the flexibility to create visually appealing and interactive applications.