small updates in Course08

Author: lynnlangit

src/main/java/org/teachingextensions/logo/utils/MazeUtils/Maze.java

@@ -8,12 +8,10 @@
  *  Generates a perfect N-by-N maze using depth-first search with a stack.
  *
  *  % java Maze 62
- *
  *  % java Maze 61
  *
  *  Note: this program generalizes nicely to finding a random tree
  *        in a graph.
- *
  ******************************************************************************/
 public class Maze
 {
@@ -46,7 +44,7 @@ private void init()
       visited[0][y] = true;
       visited[N + 1][y] = true;
     }
-    // initialze all walls as present
+    // initialize all walls as present
     north = new boolean[N + 2][N + 2];
     east = new boolean[N + 2][N + 2];
     south = new boolean[N + 2][N + 2];
@@ -190,7 +188,7 @@ public static void main(String[] args)
     // This line throws an index out bounds with any value in args ???
     //int N = Integer.parseInt(args[0]);
     //TODO: change this value to increase the complexity of the Maze
-    int N = 10;
+    int N = 8;
     Maze maze = new Maze(N);
     StdDraw.show(0);
     maze.draw();

src/main/java/org/teachingkidsprogramming/recipes/completed/section08events/TortoiseMaze.java

@@ -20,10 +20,7 @@ public static void main(String[] args)
   }
   public TortoiseMaze()
   {
-    Tortoise.show();
-    Tortoise.setSpeed(10);
-    Tortoise.setPenColor(PenColors.Greens.Green);
-    Tortoise.setPenWidth(4);
+    setUpTortoise();
     // add image icons
     ImageIcon leftArrow = new ImageIcon(
         "../TeachingKidsProgramming.Source.Java/src/main/resources/icons/arrow-left.png");
@@ -34,16 +31,16 @@ public TortoiseMaze()
     ImageIcon rightArrow = new ImageIcon(
         "../TeachingKidsProgramming.Source.Java/src/main/resources/icons/arrow-right.png");
     // add buttons using icons
-    JButton leftButton = new JButton(leftArrow);
-    JButton upButton = new JButton(upArrow);
-    JButton downButton = new JButton(downArrow);
-    JButton rightButton = new JButton(rightArrow);
-    // add buttons to your window
-    Tortoise.getBackgroundWindow().addButton(leftButton);
-    Tortoise.getBackgroundWindow().addButton(upButton);
-    Tortoise.getBackgroundWindow().addButton(downButton);
-    Tortoise.getBackgroundWindow().addButton(rightButton);
-    // add actions to your buttons
+    JButton leftButton = new JButton("left", leftArrow);
+    JButton upButton = new JButton("forward", upArrow);
+    JButton downButton = new JButton("back", downArrow);
+    JButton rightButton = new JButton("right", rightArrow);
+    // add button(s) to your window
+    addButtonToWindow(leftButton);
+    addButtonToWindow(upButton);
+    addButtonToWindow(downButton);
+    addButtonToWindow(rightButton);
+    // add action(s) to your buttons
     rightButton.addActionListener(new ActionListener()
     {
       @Override
@@ -78,4 +75,16 @@ public void actionPerformed(ActionEvent e)
     });
     Tortoise.setVisible(true);
   }
+  /*  setup code */
+  private void setUpTortoise()
+  {
+    Tortoise.show();
+    Tortoise.setSpeed(10);
+    Tortoise.setPenColor(PenColors.Greens.Green);
+    Tortoise.setPenWidth(4);
+  }
+  private void addButtonToWindow(JButton button)
+  {
+    Tortoise.getBackgroundWindow().addButton(button);
+  }
 }

src/main/java/org/teachingkidsprogramming/recipes/completed/section09final/DeepDive09.java

@@ -58,13 +58,6 @@ public void exceptionsShouldExplainAllPreconditions() throws Exception
    * 
    * 
    * 
-   * 
-   * 
-   * 
-   * 
-   * 
-   * 
-   * 
    */
   public String  ___  = "You need to fill in the blank ___";
   public Integer ____ = -99;