Code after lecture 16

src/main/java/lecture16/Feilmeldinger.java

+package lecture16;
+
+public class Feilmeldinger {
+
+	public static void main(String[] args) {
+
+		//nullPointer();
+		//indexOutOfBounds();
+		printReverse("Martin");
+		printReverse("");
+	}
+
+	private static void printReverse(String string) {
+		if(string.length()==1)
+			System.out.print(string);
+		else {
+			printReverse(string.substring(1));
+			System.out.print(string.charAt(0));
+		}
+		
+	}
+
+	private static void indexOutOfBounds() {
+		int[] tall = new int[]{1,2,3,4};
+		for(int i=1; i<=4; i++) {
+			System.out.println(tall[i]);
+		}
+		
+	}
+
+	private static void nullPointer() {
+		String name = null;
+		int tall = 42;
+		if(tall>42) {
+			name = "Martin";
+		}
+		for(int i=0; i<name.length(); i++)
+			System.out.println(name.charAt(i));
+	}
+
+}

src/main/java/lecture16/Game.java

+package lecture16;
+
+public interface Game {
+
+	boolean isOver();
+
+	Player getCurrentPlayer();
+
+	boolean isValid(Move move);
+
+	void makeMove(Move move);
+
+}

src/main/java/lecture16/GameLoop.java

+package lecture16;
+
+public class GameLoop {
+
+	public void run(Game game){
+		
+		while(!game.isOver()) {
+			Player player = game.getCurrentPlayer();
+			Move move = player.getMove(game);
+			if(game.isValid(move)) {
+				game.makeMove(move);
+			}
+			else
+				System.out.println("InvalidMove");
+		}
+	}
+}

src/main/java/lecture16/Move.java

+package lecture16;
+
+public class Move {
+
+}

src/main/java/lecture16/Player.java

+package lecture16;
+
+public interface Player {
+
+	public Move getMove(Game game);
+
+}