How do you change the size of a component such as a JLabel after it has been created?

To use JLabel and other Swing components, we first need to import the required libraries. Add the following import statements at the beginning of your Java program: ```java import javax.swing.JFrame; import javax.swing.JLabel; ```

Before creating a JLabel, we need a container, which is typically a JFrame. Create a new JFrame: ```java JFrame frame = new JFrame("JLabel Example"); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); ```

Create a new JLabel and set its initial text and size. Then, add it to the JFrame: ```java JLabel label = new JLabel("Hello, World!"); label.setBounds(50, 50, 100, 30); frame.add(label); ```

Set the size of the JFrame and make it visible: ```java frame.setSize(300, 200); frame.setLayout(null); frame.setVisible(true); ```

To change the size of the JLabel after it has been created, use the `setBounds()` method, providing new values for X, Y, width, and height: ```java label.setBounds(50, 50, 200, 30); ``` This line of code will update the width of the JLabel from 100 to 200. Here is the complete Java program to create a JFrame with a JLabel, and then change the size of the JLabel: ```java import javax.swing.JFrame; import javax.swing.JLabel; public class JLabelSizeExample { public static void main(String[] args) { // Create a JFrame JFrame frame = new JFrame("JLabel Example"); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); // Create and add a JLabel to the JFrame JLabel label = new JLabel("Hello, World!"); label.setBounds(50, 50, 100, 30); frame.add(label); // Display the JFrame frame.setSize(300, 200); frame.setLayout(null); frame.setVisible(true); // Change the size of the JLabel label.setBounds(50, 50, 200, 30); } } ```