QuizApp.java

import java.awt.EventQueue;

import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JLabel;
import java.awt.Font;
import javax.swing.SwingConstants;
import javax.swing.JTextField;
import javax.swing.JButton;
import java.awt.Color;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;

public class QuizApp {

	private JFrame frame;
	private JTextField answer;
	int lifeRemaining = 5;
	/**
	 * Launch the application.
	 */
	public static void main(String[] args) {
		EventQueue.invokeLater(new Runnable() {
			public void run() {
				try {
					QuizApp window = new QuizApp();
					window.frame.setVisible(true);
				} catch (Exception e) {
					e.printStackTrace();
				}
			}
		});
	}

	/**
	 * Create the application.
	 */
	public QuizApp() {
		initialize();
	}

	/**
	 * Initialize the contents of the frame.
	 */
	private void initialize() {
		int randomNumber = (int)(Math.random()*30)+1;
		System.out.println(randomNumber);
		frame = new JFrame();
		frame.setBounds(100, 100, 1044, 621);
		frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		frame.getContentPane().setLayout(null);
		
		JPanel panel = new JPanel();
		panel.setBounds(0, 0, 1026, 574);
		frame.getContentPane().add(panel);
		panel.setLayout(null);
		
		JLabel life = new JLabel("Life : "+ lifeRemaining);
		life.setFont(new Font("Tahoma", Font.PLAIN, 40));
		life.setBounds(34, 23, 213, 46);
		panel.add(life);
		
		JLabel lblPickANumber = new JLabel("Pick A number from 1 - 30");
		lblPickANumber.setHorizontalAlignment(SwingConstants.CENTER);
		lblPickANumber.setFont(new Font("Tahoma", Font.PLAIN, 40));
		lblPickANumber.setBounds(162, 103, 715, 46);
		panel.add(lblPickANumber);
		
		answer = new JTextField();
		answer.setHorizontalAlignment(SwingConstants.CENTER);
		answer.setFont(new Font("Tahoma", Font.PLAIN, 42));
		answer.setBounds(162, 272, 721, 63);
		panel.add(answer);
		answer.setColumns(10);
		
		JButton guess = new JButton("G U E S S");
		
		guess.setFont(new Font("Tahoma", Font.PLAIN, 50));
		guess.setBounds(162, 364, 721, 63);
		panel.add(guess);
		
		JLabel res = new JLabel("Good Luck!");
		res.setForeground(Color.BLUE);
		res.setFont(new Font("Tahoma", Font.PLAIN, 42));
		res.setHorizontalAlignment(SwingConstants.CENTER);
		res.setBounds(162, 469, 721, 57);
		panel.add(res);
		
		guess.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent arg0) {
				int ans = Integer.parseInt(answer.getText());
				if(lifeRemaining <= 0) {
					res.setText("You lost");
					return;
				}
				if(ans == randomNumber){
					System.out.println("You got it right");
					System.exit(0);
				}
				life.setText("Life : " + --lifeRemaining);
				res.setForeground(Color.RED);
				if(ans > randomNumber){
					res.setText("Too much");
				}else{
					res.setText("Too little");
				}
			}
		});
	}
}