-import java.awt.*;
-import java.awt.event.*;
-import java.awt.image.*;
-import javax.swing.*;
-import java.util.*;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.Map;
+import java.awt.Color;
+import java.awt.Dimension;
+import java.awt.Graphics2D;
+import java.awt.Graphics;
+import java.awt.Polygon;
+import java.awt.Toolkit;
+import java.awt.event.KeyAdapter;
+import java.awt.event.KeyEvent;
+import java.awt.event.WindowAdapter;
+import java.awt.event.WindowEvent;
+import java.awt.image.BufferedImage;
+import javax.swing.JFrame;
+import javax.swing.JPanel;
/**
* FenĂȘtre de dessin