java.awt

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1. Creating a Simple Window:

import java.awt.*;

public class SimpleWindow {
    public static void main(String[] args) {
        Frame frame = new Frame("My Window");
        frame.setSize(400, 300);
        frame.setVisible(true);
    }
}

2. Adding a Label to a Window:

import java.awt.*;

public class LabelWindow {
    public static void main(String[] args) {
        Frame frame = new Frame("My Window");
        frame.setSize(400, 300);
        Label label = new Label("Hello World!");
        frame.add(label);
        frame.setVisible(true);
    }
}

3. Adding a Button to a Window:

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

public class ButtonWindow {
    public static void main(String[] args) {
        Frame frame = new Frame("My Window");
        frame.setSize(400, 300);
        Button button = new Button("Click Me!");
        frame.add(button);
        button.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                System.out.println("Button clicked!");
            }
        });
        frame.setVisible(true);
    }
}

4. Creating a Panel with BorderLayout:

import java.awt.*;

public class BorderLayoutPanel {
    public static void main(String[] args) {
        Frame frame = new Frame("My Window");
        frame.setSize(400, 300);
        Panel panel = new Panel();
        panel.setLayout(new BorderLayout());
        frame.add(panel);
        frame.setVisible(true);
    }
}

5. Adding Components to a Panel with BorderLayout:

import java.awt.*;

public class BorderLayoutPanelComponents {
    public static void main(String[] args) {
        Frame frame = new Frame("My Window");
        frame.setSize(400, 300);
        Panel panel = new Panel();
        panel.setLayout(new BorderLayout());
        panel.add(new Label("North"), BorderLayout.NORTH);
        panel.add(new Label("South"), BorderLayout.SOUTH);
        panel.add(new Label("East"), BorderLayout.EAST);
        panel.add(new Label("West"), BorderLayout.WEST);
        panel.add(new Label("Center"), BorderLayout.CENTER);
        frame.add(panel);
        frame.setVisible(true);
    }
}

6. Creating a Canvas and Drawing on it:

import java.awt.*;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;

public class CanvasDrawing {
    public static void main(String[] args) {
        Frame frame = new Frame("My Window");
        frame.setSize(400, 300);
        Canvas canvas = new Canvas();
        canvas.addMouseListener(new MouseAdapter() {
            @Override
            public void mouseClicked(MouseEvent e) {
                Graphics g = canvas.getGraphics();
                g.setColor(Color.RED);
                g.fillOval(e.getX(), e.getY(), 10, 10);
            }
        });
        frame.add(canvas);
        frame.setVisible(true);
    }
}

7. Creating a Custom Component:

import java.awt.*;

public class CustomComponent extends Component {
    @Override
    public void paint(Graphics g) {
        super.paint(g);
        g.setColor(Color.BLUE);
        g.drawRect(0, 0, 100, 100);
    }
}

8. Using a Font and FontMetrics:

import java.awt.*;

public class FontExample {
    public static void main(String[] args) {
        Font font = new Font("Arial", Font.BOLD, 16);
        FontMetrics metrics = getFontMetrics(font);
        int width = metrics.stringWidth("Hello World!");
        int height = metrics.getHeight();
    }
}

9. Using an Image and ImageObserver:

import java.awt.*;
import java.awt.image.ImageObserver;

public class ImageExample {
    public static void main(String[] args) {
        Image image = Toolkit.getDefaultToolkit().getImage("myImage.png");
        class MyImageObserver implements ImageObserver {
            @Override
            public boolean imageUpdate(Image img, int infoflags, int x, int y, int width, int height) {
                return false;  // Return true if image is completely loaded
            }
        }
        MyImageObserver obs = new MyImageObserver();
        image.getWidth(obs);
        image.getHeight(obs);
    }
}

10. Using a Color and ColorModel:

import java.awt.*;
import java.awt.image.ColorModel;

public class ColorExample {
    public static void main(String[] args) {
        Color color = new Color(255, 0, 0);  // Red
        ColorModel model = ColorModel.getRGBdefault();
        int[] components = model.getComponents(color, null, 0);
    }
}

11. Creating a Menu and MenuBar:

import java.awt.*;

public class MenuExample {
    public static void main(String[] args) {
        Frame frame = new Frame("My Window");
        frame.setSize(400, 300);
        MenuBar menuBar = new MenuBar();
        Menu menu = new Menu("File");
        MenuItem item1 = new MenuItem("New");
        MenuItem item2 = new MenuItem("Open");
        menu.add(item1);
        menu.add(item2);
        menuBar.add(menu);
        frame.setMenuBar(menuBar);
        frame.setVisible(true);
    }
}

12. Creating a Scrollbar:

import java.awt.*;

public class ScrollbarExample {
    public static void main(String[] args) {
        Frame frame = new Frame("My Window");
        frame.setSize(400, 300);
        Scrollbar scrollbar = new Scrollbar(Scrollbar.HORIZONTAL, 0, 10, 0, 100);
        frame.add(scrollbar);
        frame.setVisible(true);
    }
}

13. Creating a TextArea:

import java.awt.*;

public class TextAreaExample {
    public static void main(String[] args) {
        Frame frame = new Frame("My Window");
        frame.setSize(400, 300);
        TextArea textArea = new TextArea();
        frame.add(textArea);
        frame.setVisible(true);
    }
}

14. Creating a TextField:

import java.awt.*;

public class TextFieldExample {
    public static void main(String[] args) {
        Frame frame = new Frame("My Window");
        frame.setSize(400, 300);
        TextField textField = new TextField();
        frame.add(textField);
        frame.setVisible(true);
    }
}

15. Creating a Choice:

import java.awt.*;

public class ChoiceExample {
    public static void main(String[] args) {
        Frame frame = new Frame("My Window");
        frame.setSize(400, 300);
        Choice choice = new Choice();
        choice.add("Item 1");
        choice.add("Item 2");
        choice.add("Item 3");
        frame.add(choice);
        frame.setVisible(true);
    }
}

16. Creating a Checkbox and CheckboxGroup:

import java.awt.*;

public class CheckboxExample {
    public static void main(String[] args) {
        Frame frame = new Frame("My Window");
        frame.setSize(400, 300);
        CheckboxGroup group = new CheckboxGroup();
        Checkbox checkbox1 = new Checkbox("Option 1", group, true);
        Checkbox checkbox2 = new Checkbox("Option 2", group, false);
        frame.add(checkbox1);
        frame.add(checkbox2);
        frame.setVisible(true);
    }
}

17. Creating a Radio Button and ButtonGroup:

import java.awt.*;

public class RadioButtonExample {
    public static void main(String[] args) {
        Frame frame = new Frame("My Window");
        frame.setSize(400, 300);
        ButtonGroup group = new ButtonGroup();
        RadioButton radio1 = new RadioButton("Option 1", group, true);
        RadioButton radio2 = new RadioButton("Option 2", group, false);
        frame.add(radio1);
        frame.add(radio2);
        frame.setVisible(true);
    }
}

18. Using a List:

import java.awt.*;

public class ListExample {
    public static void main(String[] args) {
        Frame frame = new Frame("My Window");
        frame.setSize(400, 300);
        List list = new List();
        list.add("Item 1");
        list.add("Item 2");
        list.add("Item 3");
        frame.add(list);
        frame.setVisible(true);
    }
}

19. Using a JOptionPane for User Input:

import javax.swing.*;

public class JOptionPaneExample {
    public static void main(String[] args) {
        String name = JOptionPane.showInputDialog("What is your name?");
        System.out.println("Hello " + name + "!");
    }
}

20. Using a JDialog for Custom Dialogs:

import javax.swing.*;

public class JDialogExample {
    public static void main(String[] args) {
        JDialog dialog = new JDialog();
        dialog.setTitle("My Dialog");
        dialog.setModal(true);
        dialog.setSize(300, 200);
        JButton button = new JButton("OK");
        dialog.add(button);
        dialog.setVisible(true);
    }
}

21. Creating a Custom Graphics2D Shape:

import java.awt.*;
import java.awt.geom.Ellipse2D;

public class CustomShapeExample {
    public static void main(String[] args) {
        Graphics2D g2d = (Graphics2D) getGraphics();
        Ellipse2D circle = new Ellipse2D.Double(100, 100, 100, 100);
        g2d.draw(circle);
    }
}

22. Using AffineTransform for Geometric Transformations:

import java.awt.*;
import java.awt.geom.AffineTransform;

public class AffineTransformExample {
    public static void main(String[] args) {
        Graphics2D g2d = (Graphics2D) getGraphics();
        AffineTransform transform = new AffineTransform();
        transform.translate(100, 100);
        transform.rotate(Math.PI / 4);
        g2d.setTransform(transform);
        g2d.drawRect(0, 0, 100, 100);
    }
}

23. Using a GridLayout:

import java.awt.*;

public class GridLayoutExample {
    public static void main(String[] args) {
        Frame frame = new Frame("My Window");
        frame.setSize(400, 300);
        Panel panel = new Panel();
        panel.setLayout(new GridLayout(3, 3));
        for (int i = 0; i < 9; i++) {
            panel.add(new Button("Button " + i));
        }
        frame.add(panel);
        frame.setVisible(true);
    }
}

24. Using a FlowLayout:

import java.awt.*;

public class FlowLayoutExample {
    public static void main(String[] args) {
        Frame frame = new Frame("My Window");
        frame.setSize(400, 300);
        Panel panel = new Panel();
        panel.setLayout(new FlowLayout());
        for (int i = 0; i < 10; i++) {
            panel.add(new Button("Button " + i));
        }
        frame.add(panel);
        frame.setVisible(true);
    }
}

25. Using a MigLayout:

import net.miginfocom.swing.MigLayout;

public class MigLayoutExample {
    public static void main(String[] args) {
        JFrame frame = new JFrame("My Window");
        frame.setSize(400, 300);
        frame.setLayout(new MigLayout("debug"));
        frame.add(new JLabel("Name:"), "align label");
        frame.add(new JTextField(), "growx");
        frame.add(new JLabel("Age:"), "align label");
        frame.add(new JTextField(), "growx");
        frame.setVisible(true);
    }
}

26. Using a BorderLayout with Constraints:

import java.awt.*;

public class BorderLayoutConstraintsExample {
    public static void main(String[] args) {
        Frame frame = new Frame("My Window");
        frame.setSize(400, 300);
        frame.setLayout(new BorderLayout());
        frame.add(new Button("North"), BorderLayout.NORTH);
        frame.add(new Button("South"), BorderLayout.SOUTH);
        frame.add(new Button("East"), BorderLayout.EAST);
        frame.add(new Button("West"), BorderLayout.WEST);
        frame.add(new Button("Center"), BorderLayout.CENTER);
        frame.setVisible(true);
    }
}

27. Using a CardLayout:

import java.awt.*;

public class CardLayoutExample {
    public static void main(String[] args) {
        Frame frame = new Frame("My Window");
        frame.setSize(400, 300);
        CardLayout cardLayout = new CardLayout();
        Panel panel = new Panel(cardLayout);
        panel.add("Card 1", new Button("Card 1"));
        panel.add("Card 2", new Button("Card 2"));
        frame.add(panel);
        cardLayout.show(panel, "Card 2");
        frame.setVisible(true);
    }
}

28. Using a GridBagLayout:

import java.awt.*;

public class GridBagLayoutExample {
    public static void main(String[] args) {
        Frame frame = new Frame("My Window");
        frame.setSize(400, 300);
        GridBagLayout gridBagLayout = new GridBagLayout();
        GridBagConstraints constraints = new GridBagConstraints();
        Panel panel = new Panel(gridBagLayout);
        constraints.gridx = 0;
        constraints.gridy = 0;
        panel.add(new Button("Button 1"), constraints);
        constraints.gridx = 1;
        constraints.gridy = 1;
        panel.add(new Button("Button 2"), constraints);
        frame.add(panel);
        frame.setVisible(true);
    }
}

29. Using a SpringLayout:

import java.awt.*;

public class SpringLayoutExample {
    public static void main(String[] args) {
        Frame frame = new Frame("My Window");
        frame.setSize(400, 300);
        SpringLayout springLayout = new SpringLayout();
        Panel panel = new Panel(springLayout);
        Spring gap = Spring.constant(5);
        springLayout.putConstraint(SpringLayout.WEST, panel, gap, SpringLayout.WEST, frame);
        springLayout.putConstraint(SpringLayout.NORTH, panel, gap, SpringLayout.NORTH, frame);
        springLayout.putConstraint(SpringLayout.SOUTH, panel, gap, SpringLayout.SOUTH, frame);
        springLayout.putConstraint(SpringLayout.EAST, panel, gap, SpringLayout.EAST, frame);
        frame.add(panel);
        frame.setVisible(true);
    }
}

30. Using a TabbedPane:

import javax.swing.*;

public class TabbedPaneExample {
    public static void main(String[] args) {
        JFrame frame = new JFrame("My Window");
        frame.setSize(400, 300);
        JTabbedPane tabbedPane = new JTabbedPane();
        tabbedPane.add("Tab 1", new JPanel());
        tabbedPane.add("Tab 2", new JPanel());
        frame.add(tabbedPane);
        frame.setVisible(true);
    }
}

31. Using a JSplitPane:

import javax.swing.*;

public class JSplitPaneExample {
    public static void main(String[] args) {
        JFrame frame = new JFrame("My Window");
        frame.setSize(400, 300);
        JSplitPane splitPane = new JSplitPane(JSplitPane.HORIZONTAL_SPLIT);
        splitPane.setTopComponent(new JPanel());
        splitPane.setBottomComponent(new JPanel());
        frame.add(splitPane);
        frame.setVisible(true);
    }
}

32. Using a JScrollPane:

import javax.swing.*;

public class JScrollPaneExample {
    public static void main(String[] args) {
        JFrame frame = new JFrame("My Window");
        frame.setSize(400, 300);
        JScrollPane scrollPane = new JScrollPane(new JPanel());
        frame.add(scrollPane);
        frame.setVisible(true);
    }
}

33. Using a JTable:

import javax.swing.*;

public class JTableExample {
    public static void main(String[] args) {
        JFrame frame = new JFrame("My Window");
        frame.setSize(400, 300);
        String[][] data = {{"1", "John Doe"}, {"2", "Jane Doe"}};
        String[] columnNames = {"ID", "Name"};
        JTable table = new JTable(data, columnNames);
        frame.add(new JScrollPane(table));
        frame.setVisible(true);
    }
}

34. Using a JTree: