package com.archiwise.experiment.cspsudoku.domein;

import java.util.Arrays;
import java.util.List;

/**
 * Created by nelis on 24/10/15.
 */
public class Cell {

    private List<Integer> possibleValues = Arrays.asList(1,2,3,4,5,6);

    public List<Integer> getPossibleValues() {
        return possibleValues;
    }

    public int getNumberOfPossibleValues() {
        return possibleValues.size();
    }
    
}

package com.archiwise.experiment.cspsudoku.domein;

/**
 * Created by nelis on 24/10/15.
 */
public class Cell {

}

--- 
+++ 
@@ -1,8 +1,21 @@
 package com.archiwise.experiment.cspsudoku.domein;
+
+import java.util.Arrays;
+import java.util.List;
 
 /**
  * Created by nelis on 24/10/15.
  */
 public class Cell {
 
+    private List<Integer> possibleValues = Arrays.asList(1,2,3,4,5,6);
+
+    public List<Integer> getPossibleValues() {
+        return possibleValues;
+    }
+
+    public int getNumberOfPossibleValues() {
+        return possibleValues.size();
+    }
+    
 }
Add implementation for getting the possible values
