Исправления

src/tse/lr5/PaintPanelTask2.java

@@ -30,7 +30,7 @@ public class PaintPanelTask2 extends PaintPanel implements Runnable {
         });
         addKeyListener(new KeyAdapter() {
             @Override
-            public void keyReleased(KeyEvent e) {
+            public void keyPressed(KeyEvent e) {
                 final int step = 5;
                 FileIconPaintable p1 = getControllablePaintable();
                 switch (e.getKeyCode()) {

src/tse/lr5/TrianglesWindow.java

@@ -91,7 +91,7 @@ public class TrianglesWindow extends JFrame {
             TrianglePaintable obj = new TrianglePaintable(fill, stroke, p1, p2, p3);
             panel.addPaintable(obj);
             try {
-                Thread.sleep(10);
+                Thread.sleep(5);
             } catch (InterruptedException ex) { }
             return obj;
         }