hl130: Reflection lab

src/Main.java

@@ -1,3 +1,5 @@
+import java.lang.reflect.InvocationTargetException;
+
 import roulette.Gambler;
 import roulette.Game;
 
@@ -8,7 +10,7 @@
  * @author Robert C. Duvall
  */
 public class Main {
-    public static void main (String[] args) {
+    public static void main (String[] args) throws InstantiationException, IllegalAccessException, ClassNotFoundException, NoSuchMethodException, SecurityException, IllegalArgumentException, InvocationTargetException {
         Game game = new Game();
         Gambler player = new Gambler("Robert", 1000);
 

src/roulette/Factory.java

@@ -0,0 +1,32 @@
+package roulette;
+
+import java.lang.reflect.Constructor;
+import java.lang.reflect.InvocationTargetException;
+import java.util.ArrayList;
+import java.util.List;
+
+public class Factory {
+
+	private List<Bet> myBets;
+
+	public Factory () {
+		myBets = new ArrayList<Bet>();
+
+	}
+
+	public Bet createBet (String classname, String description, int odds) 
+			throws InstantiationException, IllegalAccessException, 
+			ClassNotFoundException, NoSuchMethodException, 
+			SecurityException, IllegalArgumentException, InvocationTargetException {
+//		Bet myInstance = (Bet) Class.forName(classname).newInstance();
+
+		Class<?> clazz = Class.forName("roulette.bets." + classname);
+		Constructor<?> constructor = clazz.getConstructor(String.class, int.class);
+
+		Bet instance = (Bet) constructor.newInstance(description, new Integer(odds));
+
+		myBets.add(instance);
+		return instance;
+	}
+
+}

src/roulette/Game.java

@@ -1,5 +1,7 @@
 package roulette;
 
+import java.lang.reflect.InvocationTargetException;
+
 import roulette.bets.OddEven;
 import roulette.bets.RedBlack;
 import roulette.bets.ThreeConsecutive;
@@ -15,17 +17,33 @@ public class Game {
     // name of the game
     private static final String DEFAULT_NAME = "Roulette";
     // add new bet subclasses here
+    private Factory myFactory;
+
     private Bet[] myPossibleBets = {
         new RedBlack("Red or Black", 1),
         new OddEven("Odd or Even", 1),
         new ThreeConsecutive("Three in a Row", 11),
     };
+
+    private String[] myNames = {
+    		"RedBlack", "OddEven", "ThreeConsecutive"
+        };    
+
+    private String[] myDescription = {
+    		"Red or Black", "Odd or Even", "Three in a Row"
+    };
+
+    private int[] myOdds = {
+    	1, 1, 11	
+    };
+
     private Wheel myWheel;
 
     /**
      * Construct the game.
      */
     public Game () {
+    	myFactory = new Factory();
         myWheel = new Wheel();
     }
 
@@ -43,8 +61,15 @@ public String getName () {
      * that the bet is won or lost.
      *
      * @param player one that wants to play a round of the game
+     * @throws InvocationTargetException 
+     * @throws IllegalArgumentException 
+     * @throws SecurityException 
+     * @throws NoSuchMethodException 
+     * @throws ClassNotFoundException 
+     * @throws IllegalAccessException 
+     * @throws InstantiationException 
      */
-    public void play (Gambler player) {
+    public void play (Gambler player) throws InstantiationException, IllegalAccessException, ClassNotFoundException, NoSuchMethodException, SecurityException, IllegalArgumentException, InvocationTargetException {
         int amount = ConsoleReader.promptRange("How much do you want to bet",
                                                0, player.getBankroll());
         Bet b = promptForBet();
@@ -66,13 +91,29 @@ public void play (Gambler player) {
 
     /**
      * Prompt the user to make a bet from a menu of choices.
+     * @throws InvocationTargetException 
+     * @throws IllegalArgumentException 
+     * @throws SecurityException 
+     * @throws NoSuchMethodException 
+     * @throws ClassNotFoundException 
+     * @throws IllegalAccessException 
+     * @throws InstantiationException 
      */
-    private Bet promptForBet () {
+    private Bet promptForBet () throws InstantiationException, IllegalAccessException, ClassNotFoundException, NoSuchMethodException, SecurityException, IllegalArgumentException, InvocationTargetException {
         System.out.println("You can make one of the following types of bets:");
         for (int k = 0; k < myPossibleBets.length; k++) {
             System.out.println(String.format("%d) %s", (k + 1), myPossibleBets[k]));
         }
         int response = ConsoleReader.promptRange("Please make a choice", 1, myPossibleBets.length);
-        return myPossibleBets[response - 1];
+
+        /**
+         * Factory generates a class using reflection
+         */
+
+        return myFactory.createBet(myNames[response - 1], myDescription[response - 1],
+        		myOdds[response - 1]);
+
+
+        //        return myPossibleBets[response - 1];
     }
 }

src/roulette/bets/OddEven.java

@@ -8,7 +8,7 @@
 public class OddEven extends Bet {
     private String myChoice;
 
-    public OddEven (String description, int odds) {
+    public OddEven (String description, Integer odds) {
         super(description, odds);
         myChoice = "";
     }