Updated Spiral to surface runtime exception

Author: lynnlangit

src/main/java/org/teachingkidsprogramming/recipes/completed/section01forloops/Spiral.java

@@ -3,6 +3,7 @@
 import org.teachingextensions.logo.ColorWheel;
 import org.teachingextensions.logo.PenColors;
 import org.teachingextensions.logo.Tortoise;
+import org.teachingextensions.windows.MessageBox;
 
 public class Spiral
 {
@@ -21,12 +22,19 @@ public static void main(String[] args)
     //    Do the following 75 times --#3
     for (int i = 0; i < 75; i++)
     {
-      //         Change the color of the line the tortoise draws the next color on the Color Wheel --#6
-      Tortoise.setPenColor(ColorWheel.getNextColor());
-      //         Move the tortoise 5 times the current line number you are drawing --#5
-      Tortoise.move(i * 5);
-      //         Turn the tortoise 1/3 of 360 degrees to the right --#2
-      Tortoise.turn(360.0 / 3);
+      try
+      {
+        //         Change the color of the line the tortoise draws the next color on the Color Wheel --#6
+        Tortoise.setPenColor(ColorWheel.getNextColor());
+        //         Move the tortoise 5 times the current line number you are drawing --#5
+        Tortoise.move(i * 5);
+        //         Turn the tortoise 1/3 of 360 degrees to the right --#2
+        Tortoise.turn(360.0 / 3);
+      }
+      catch (RuntimeException re)
+      {
+        MessageBox.showMessage("Hold up: " + re);
+      }
     }
   }
 }

src/main/java/org/teachingkidsprogramming/section01forloops/Spiral.java

@@ -1,5 +1,7 @@
 package org.teachingkidsprogramming.section01forloops;
 
+import org.teachingextensions.windows.MessageBox;
+
 public class Spiral
 {
   public static void main(String[] args)
@@ -10,9 +12,16 @@ public static void main(String[] args)
     //    Add Violet to the Color Wheel --#8
     //    Add Purple to the Color Wheel --#9
     //    Do the following 75 times --#3.1
-    //         Change the pen color of the line the tortoise draws the next color on the Color Wheel --#6
-    //         Move the tortoise 5 times the current line number you are drawing --#5
-    //         Turn the tortoise 1/3 of 360 degrees to the right --#2
+    try
+    {
+      //         Change the pen color of the line the tortoise draws the next color on the Color Wheel --#6
+      //         Move the tortoise 5 times the current line number you are drawing --#5
+      //         Turn the tortoise 1/3 of 360 degrees to the right --#2
+    }
+    catch (RuntimeException re)
+    {
+      MessageBox.showMessage("Hold up: " + re);
+    }
     //    Repeat --#3.2
   }
 }