Swing

Swing is a part of Java Foundation Classes (JFC) used to create Graphical User Interfaces (GUIs). It builds on AWT (Abstract Window Toolkit) but provides a richer set of components and is more flexible.

Key Features

  • Lightweight Components (do not rely on native OS peers)
  • Pluggable Look-and-Feel
  • MVC Architecture
  • Highly customizable and extensible

Basic Structure

import javax.swing.*;

public class HelloSwing {
    public static void main(String[] args) {
        JFrame frame = new JFrame("Swing Example");
        JButton button = new JButton("Click Me!");

        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setSize(300, 200);
        frame.add(button);
        frame.setVisible(true);
    }
}

Core Components

  • JFrame – Top-level window
  • JButton – Push button
  • JLabel – Display text
  • JTextField – Single-line input
  • JPanel – Generic container

Benefits of Swing

  • Cross-platform consistency
  • Rich component library
  • Backed by event-driven programming

🔗 Related Notes