How to generate random numbers in Java Swing?

 

GUI

package Trial;

import java.util.Random;

import javax.swing.JFrame;
import javax.swing.JTextField;


public class Demo2 {

	JFrame frame;

	public Demo2() {
		frame = new JFrame("Hancie e-Learning Studio");
		frame.setSize(650, 450);
		frame.setLocationRelativeTo(null);
		frame.getContentPane().setLayout(null);

		Random rand=new Random();
		int random=(int) (Math.random()*500+1);
		
		JTextField t1=new JTextField();
		t1.setText(String.valueOf(random));
		t1.setBounds(10,10,200,35);
		frame.add(t1);
		

		frame.setVisible(true);

	}

	public static void main(String[] args) {

		new Demo2();
	}
}

Output