started on b

src/uebung09/chess/Board.java

@@ -1,12 +1,17 @@
-package chess;
+package uebung09.chess;
 
 import java.util.ArrayList;
 import java.util.List;
+import uebung09.iterator.Array2dIterator;
 
-public class Board {
+public class Board extends Array2dIterator<Piece>{
     private final Piece[][] field = new Piece[8][8];
     private final List<Piece> pieces = new ArrayList<>();
 
+    Board(){
+        
+    }
+
     void add(Piece piece) {
         if (piece.getBoard() != this)
             throw new IllegalArgumentException("wrong board");

src/uebung09/chess/ChessApp.java

@@ -1,4 +1,4 @@
-package chess;
+package uebung09.chess;
 
 import java.io.InputStream;
 import java.util.NoSuchElementException;
@@ -12,6 +12,7 @@ public class ChessApp {
     private static final String BLACK_QUEEN = "Q";
     private static final String WHITE_KNIGHT = "n";
     private static final String BLACK_KNIGHT = "N";
+    private static final String ITERATOR = "i";
 
     private final Scanner scanner;
     private final Board board;

src/uebung09/chess/Color.java

@@ -1,4 +1,4 @@
-package chess;
+package uebung09.chess;
 
 public enum Color {
     black, white

src/uebung09/chess/Knight.java

@@ -1,4 +1,4 @@
-package chess;
+package uebung09.chess;
 
 import static java.lang.Math.abs;
 

src/uebung09/chess/Piece.java

@@ -1,4 +1,4 @@
-package chess;
+package uebung09.chess;
 
 public abstract class Piece {
     private Color color;

src/uebung09/chess/Queen.java

@@ -1,4 +1,4 @@
-package chess;
+package uebung09.chess;
 
 import static java.lang.Integer.signum;
 import static java.lang.Math.abs;

src/uebung09/collection/Set.java

@@ -1,4 +1,4 @@
-package collection;
+package uebung09.collection;
 
 /**
  * A set of elements that does not contain any element twice.

src/uebung09/collection/SetFactory.java

@@ -1,4 +1,4 @@
-package collection;
+package uebung09.collection;
 
 public class SetFactory {
 

src/uebung09/iterator/Array2dIterator.java

@@ -0,0 +1,25 @@
+package uebung09.iterator;
+
+import java.util.Iterator;
+
+public class Array2dIterator<T> implements Iterator<T>{
+
+
+    public <T> Array2dIterator(T[][] aaray) {
+        
+    }
+
+    @Override
+    public boolean hasNext() {
+        // TODO Auto-generated method stub
+        return false;
+    }
+
+    @Override
+    public T next() {
+        // TODO Auto-generated method stub
+        return null;
+    }
+
+
+}