RandomPatternGenerator.java

import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.util.Random;

public class RandomPatternGenerator extends JFrame {
 private JTextArea patternTextArea;

 public RandomPatternGenerator() {
 setTitle("Random Pattern Generator");
 setSize(400, 300);
 setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

 // Create button
 JButton generateButton = new JButton("Generate Pattern");
 generateButton.addActionListener(new ActionListener() {
 @Override
 public void actionPerformed(ActionEvent e) {
 generatePattern();
 }
 });

 // Create text area
 patternTextArea = new JTextArea();
 patternTextArea.setEditable(false);

 // Add components to frame
 getContentPane().setLayout(new BorderLayout());
 getContentPane().add(generateButton, BorderLayout.NORTH);
 getContentPane().add(new JScrollPane(patternTextArea), BorderLayout.CENTER);

 setVisible(true);
 }

 private void generatePattern() {
 StringBuilder pattern = new StringBuilder();
 Random random = new Random();
 // Generate random pattern here, for example:
 int rows = random.nextInt(10) + 1; // Random number of rows (1 to 10)
 for (int i = 0; i < rows; i++) {
 int cols = random.nextInt(10) + 1; // Random number of columns (1 to 10)
 for (int j = 0; j < cols; j++) {
 pattern.append(random.nextBoolean() ? "* " : "- "); // Randomly choose between '*' and '-'
 }
 pattern.append("\n");
 }
 patternTextArea.setText(pattern.toString());
 }

 public static void main(String[] args) {
 SwingUtilities.invokeLater(new Runnable() {
 @Override
 public void run() {
 new RandomPatternGenerator();
 }
 });
 }
}