Random_number

import java.awt.EventQueue;

import javax.swing.JFrame;
import javax.swing.JTextField;
import javax.swing.JLabel;
import javax.swing.JButton;
import java.awt.Font;
import java.util.Random;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;
import java.awt.Color;
import java.awt.SystemColor;
import javax.swing.UIManager;
import javax.swing.SwingConstants;

public class RandomGUI {

    static int getRandom(int min, int max) {
        Random rand = new Random();
        if (min > max) {
            int temp = min;
            min = max;
            max = temp;
        }
        int num = min + rand.nextInt(max - min + 1);
        return num;
    }

    private JFrame frmRandomNumber;
    private JTextField minField;
    private JTextField maxField;

    /**
     * Launch the application.
     */
    public static void main(String[] args) {
        EventQueue.invokeLater(new Runnable() {
            public void run() {
                try {
                    RandomGUI window = new RandomGUI();
                    window.frmRandomNumber.setVisible(true);
                } catch (Exception e) {
                    e.printStackTrace();
                }
            }
        });
    }

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

    /**
     * Initialize the contents of the frame.
     */
    private void initialize() {
        frmRandomNumber = new JFrame();
        frmRandomNumber.setBackground(UIManager.getColor("Button.background"));
        frmRandomNumber.getContentPane().setBackground(new Color(124, 252, 0));
        frmRandomNumber.setTitle("Random number");
        frmRandomNumber.setBounds(100, 100, 321, 311);
        frmRandomNumber.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frmRandomNumber.getContentPane().setLayout(null);

        minField = new JTextField();
        minField.setBackground(UIManager.getColor("CheckBox.background"));
        minField.setBounds(94, 55, 105, 22);
        frmRandomNumber.getContentPane().add(minField);
        minField.setColumns(10);

        maxField = new JTextField();
        maxField.setBackground(UIManager.getColor("CheckBox.background"));
        maxField.setBounds(94, 104, 105, 22);
        frmRandomNumber.getContentPane().add(maxField);
        maxField.setColumns(10);

        JLabel lblNewLabel = new JLabel("Min:");
        lblNewLabel.setFont(new Font("Tahoma", Font.PLAIN, 17));
        lblNewLabel.setBounds(36, 57, 46, 14);
        frmRandomNumber.getContentPane().add(lblNewLabel);

        JLabel lblNewLabel_1 = new JLabel("Max:");
        lblNewLabel_1.setFont(new Font("Tahoma", Font.PLAIN, 17));
        lblNewLabel_1.setBounds(36, 109, 46, 14);
        frmRandomNumber.getContentPane().add(lblNewLabel_1);

        JLabel resultLbl = new JLabel("Random number:");
        resultLbl.setFont(new Font("Tahoma", Font.PLAIN, 17));
        resultLbl.setBounds(36, 206, 188, 29);
        frmRandomNumber.getContentPane().add(resultLbl);

        JButton generateBtn = new JButton("Generate");
        generateBtn.setBackground(UIManager.getColor("Button.light"));
        generateBtn.addActionListener(new ActionListener() {

            public void actionPerformed(ActionEvent e) {
                try {
                    int min = Integer.parseInt(minField.getText());
                    int max = Integer.parseInt(maxField.getText());
                    int r = getRandom(min, max);
                    resultLbl.setText("Random number " + r);
                } catch (Exception ex) {
                    minField.setText("");
                    maxField.setText("");
                    resultLbl.setText("Invalid numbers!");
                }
            }
        });
        generateBtn.setFont(new Font("Tahoma", Font.PLAIN, 15));
        generateBtn.setBounds(97, 161, 102, 44);
        frmRandomNumber.getContentPane().add(generateBtn);

        JButton clearBtn = new JButton("Clear");
        clearBtn.setBackground(UIManager.getColor("Button.light"));
        clearBtn.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                minField.setText("");
                maxField.setText("");
                resultLbl.setText("Random number ");
            }
        });
        clearBtn.setFont(new Font("Tahoma", Font.PLAIN, 15));
        clearBtn.setBounds(209, 13, 82, 44);
        frmRandomNumber.getContentPane().add(clearBtn);


    }
}