- repainting automatically now

src/de/itsblue/ConnectFour/PlateContainer.java

@@ -64,6 +64,9 @@ public class PlateContainer extends JPanel {
 
         this.containedPlate = plate;
 
+        // repaint
+        this.paint(this.getGraphics());
+
         return true;
     }
 
@@ -102,6 +105,9 @@ public class PlateContainer extends JPanel {
 
         this.highlighted = false;
 
+        // repaint
+        this.paint(this.getGraphics());
+
         return ret;
     }
 
@@ -110,6 +116,9 @@ public class PlateContainer extends JPanel {
      */
     public void highlight() {
         this.highlighted = true;
+
+        // repaint
+        this.paint(this.getGraphics());
     }
 
     /**
@@ -117,6 +126,8 @@ public class PlateContainer extends JPanel {
      */
     @Override
     public void paint(Graphics g) {
+        if(g == null)
+            return;
         // draw background
         g.setColor(Color.lightGray);
         g.fillRect(0, 0, this.getWidth(), this.getHeight());