Untitled

import java.awt.Color;
import java.awt.Component;
import java.awt.Dimension;
import java.awt.FlowLayout;
import java.awt.Font;
import java.awt.Graphics;
import java.awt.Toolkit;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.io.BufferedWriter;
import java.io.FileWriter;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.Random;
import javax.swing.JFrame;
import javax.swing.JLabel;

public class Main extends JFrame implements MouseListener {
  public int[] position = new int[] { 400, 300 };

  public int[] mousePos = new int[] { 0, 0 };

  public Dimension size = Toolkit.getDefaultToolkit().getScreenSize();

  public Random rnd = new Random();

  public int lvl = 0;

  JLabel text;

  public void mouseClicked(MouseEvent e) {}

  public void mousePressed(MouseEvent e) {
    this.mousePos[0] = e.getX();
    this.mousePos[1] = e.getY();
    boolean inRect = false;
    int offsetX = this.mousePos[0] - this.position[0] + 15;
    int offsetY = this.mousePos[1] - this.position[1] + 15;
    if (offsetX >= -15 && offsetX <= 15 && offsetY >= -15 && offsetY <= 15)
      inRect = true;
    if (inRect) {
      this.lvl++;
      this.text.setForeground(new Color(21, 199, 5));
      this.text.setText("<html><center>NICE</center><br><center>clicks = " + this.lvl + "</center></html>");
    } else {
      this.text.setForeground(Color.RED);
      this.text.setText("WRONG");
    }
    WriteFile(offsetX + "x" + offsetY);
    this.position[0] = this.rnd.nextInt(this.size.width - 60) + 30;
    this.position[1] = this.rnd.nextInt(this.size.height - 60) + 30;
    repaint();
  }

  public void mouseReleased(MouseEvent e) {}

  public void mouseEntered(MouseEvent e) {}

  public void mouseExited(MouseEvent e) {}

  public static void main(String[] args) {
    (new Main()).Quadro();
  }

  public void Quadro() {
    this.text = new JLabel("CLICK ON RED AREA");
    this.text.setFont(new Font("Verdana", 1, 18));
    setLayout(new FlowLayout(1));
    add(this.text);
    setSize(this.size);
    setUndecorated(true);
    addMouseListener(this);
    setDefaultCloseOperation(3);
    setLocationRelativeTo((Component)null);
    setVisible(true);
  }

  public void paint(Graphics g) {
    super.paint(g);
    Sleep(100);
    g.setColor(Color.RED);
    g.fillRect(this.position[0], this.position[1], 30, 30);
    g.setColor(Color.BLACK);
    g.drawRect(this.position[0] - 1, this.position[1] - 1, 31, 31);
    g.drawRect(this.position[0] - 2, this.position[1] - 2, 33, 33);
  }

  public void WriteFile(String dat) {
    try(FileWriter fw = new FileWriter("MouseAccuracy.dat", true);
        BufferedWriter bw = new BufferedWriter(fw);
        PrintWriter out = new PrintWriter(bw)) {
      out.println(dat);
    } catch (IOException iOException) {}
  }

  public void Sleep(int ms) {
    try {
      Thread.sleep(ms);
    } catch (InterruptedException e) {
      e.printStackTrace();
    }
  }
}