added Tic Tac Toe game loop and finished attribute to Game

src/main/java/Game/Game.java

@@ -5,6 +5,7 @@ import java.util.ArrayList;
 public abstract class Game {
 
     protected ArrayList<String> outputBuffer = new ArrayList<>();
+    private boolean isFinished = false;
 
     public abstract void update(String input);
 
@@ -14,6 +15,14 @@ public abstract class Game {
         }
     }
 
+    public boolean isFinished() {
+        return isFinished;
+    }
+
+    protected void setFinished(boolean isFinished) {
+        this.isFinished = isFinished;
+    }
+
     protected void setOutputBuffer(ArrayList<String> outputBuffer) {
         this.outputBuffer = outputBuffer;
     }

src/main/java/Game/TicTacToe/Board.java

@@ -11,7 +11,7 @@ public class Board {
         EMPTY
     }
 
-    enum CurrentState {
+    public enum CurrentState {
         DRAW,
         CIRCLEWIN,
         CROSSWIN,
@@ -119,8 +119,8 @@ public class Board {
 
     public CurrentState getCurrentState() {
 
-        int counterCross = 0;
-        int counterCircle = 0;
+        int counterCross;
+        int counterCircle;
 
         for (int[] pattern : winPatterns) {
             counterCircle = 0;

src/main/java/Game/Tictactoe.java

@@ -15,19 +15,63 @@ public class Tictactoe extends Game {
     private void init() {
         crossTurn = true;
         currentBoard = new Board();
+        outputBuffer.add("Welcome to Tic Tac Toe. \nCross start the game");
+        outputBuffer.addAll(currentBoard.getOutputBoard());
+        outputBuffer.add((crossTurn ? "Cross" : "Circle") + " it´s your Turn, please choose a Cell:");
     }
 
     @Override
     public void update(String input) {
         outputBuffer.clear();
-        boolean validTurn = currentBoard.setCellState(Integer.parseInt(input), crossTurn);
+        if (isFinished()) {
+            resetBoard();
+            return;
+        }
+        boolean validTurn = false;
+        try {
+            validTurn = currentBoard.setCellState(Integer.parseInt(input), crossTurn);
+
+        } catch (NumberFormatException e) {
+
+        }
+
         outputBuffer.addAll(currentBoard.getOutputBoard());
-        if(validTurn) {
+        if (validTurn)
             switchTurn();
-        } else {
+        else
             outputBuffer.add("Invalid Turn!");
+
+        switch (currentBoard.getCurrentState()) {
+            case CIRCLEWIN:
+                outputBuffer.add("Circle won the game gg");
+                setFinished(true);
+                break;
+            case CROSSWIN:
+                outputBuffer.add("Cross won the game gg");
+                setFinished(true);
+                break;
+            case DRAW:
+                outputBuffer.add("l2p");
+                setFinished(true);
+                break;
+            case NOTFINISHED:
+                outputBuffer.add((crossTurn ? "Cross" : "Circle") + " it´s your Turn, please choose a Cell:");
+                break;
+            default:
+                throw new IllegalStateException("Unexpected value: " + currentBoard.getCurrentState());
         }
-        outputBuffer.add((crossTurn?"Cross":"Circle") + " it´s your Turn, please choose a Cell:");
+        if (isFinished()) {
+            outputBuffer.add("Please enter any key to start the game!");
+        }
+    }
+
+    public void resetBoard() {
+        setFinished(false);
+        currentBoard = new Board();
+        crossTurn = true;
+        outputBuffer.add("Starting a new Game... Prepare for the fight");
+        outputBuffer.addAll(currentBoard.getOutputBoard());
+        outputBuffer.add((crossTurn ? "Cross" : "Circle") + " it´s your Turn, please choose a Cell:");
     }
 
     public void switchTurn() {

src/main/java/Main.java

@@ -1,6 +1,17 @@
+import Game.Tictactoe;
+
+import java.util.Scanner;
+
 public class Main {
 
     public static void main(String[] args){
         System.out.println("Hello world!");
+        Tictactoe ttt = new Tictactoe();
+        Scanner scan = new Scanner(System.in);
+        ttt.print();
+        while (scan.hasNext()) {
+            ttt.update(scan.next());
+            ttt.print();
+        }
     }
 }