exercism · Smarticles101 · Jul 6, 2017 · Jul 4, 2017 · Jul 4, 2017 · Jul 4, 2017
diff --git a/exercises/all-your-base/src/main/java/.keep b/exercises/all-your-base/src/main/java/.keep
diff --git a/exercises/all-your-base/src/main/java/BaseConverter.java b/exercises/all-your-base/src/main/java/BaseConverter.java
diff --git a/exercises/anagram/src/main/java/.keep b/exercises/anagram/src/main/java/.keep
diff --git a/exercises/anagram/src/main/java/Anagram.java b/exercises/anagram/src/main/java/Anagram.java
diff --git a/exercises/beer-song/src/main/java/.keep b/exercises/beer-song/src/main/java/.keep
diff --git a/exercises/beer-song/src/main/java/BeerSong.java b/exercises/beer-song/src/main/java/BeerSong.java
diff --git a/exercises/binary-search/src/main/java/.keep b/exercises/binary-search/src/main/java/.keep
diff --git a/exercises/binary-search/src/main/java/BinarySearch.java b/exercises/binary-search/src/main/java/BinarySearch.java
diff --git a/exercises/bracket-push/src/main/java/.keep b/exercises/bracket-push/src/main/java/.keep
diff --git a/exercises/bracket-push/src/main/java/BracketChecker.java b/exercises/bracket-push/src/main/java/BracketChecker.java
diff --git a/exercises/change/src/main/java/.keep b/exercises/change/src/main/java/.keep
diff --git a/exercises/change/src/main/java/ChangeCalculator.java b/exercises/change/src/main/java/ChangeCalculator.java
diff --git a/exercises/collatz-conjecture/src/main/java/.keep b/exercises/collatz-conjecture/src/main/java/.keep
diff --git a/exercises/collatz-conjecture/src/main/java/CollatzCalculator.java b/exercises/collatz-conjecture/src/main/java/CollatzCalculator.java
diff --git a/exercises/diamond/src/main/java/.keep b/exercises/diamond/src/main/java/.keep
diff --git a/exercises/diamond/src/main/java/DiamondPrinter.java b/exercises/diamond/src/main/java/DiamondPrinter.java
diff --git a/exercises/etl/src/main/java/Etl.java b/exercises/etl/src/main/java/Etl.java
@@ -3,6 +3,6 @@
 
 public class Etl {
     public Map<String, Integer> transform(Map<Integer, List<String>> old) {
-        return null;
+        throw new UnsupportedOperationException("Delete this statement and write your own implementation.");
     }
 }
diff --git a/exercises/flatten-array/src/main/java/.keep b/exercises/flatten-array/src/main/java/.keep
diff --git a/exercises/flatten-array/src/main/java/Flattener.java b/exercises/flatten-array/src/main/java/Flattener.java
diff --git a/exercises/kindergarten-garden/src/main/java/KindergartenGarden.java b/exercises/kindergarten-garden/src/main/java/KindergartenGarden.java
diff --git a/exercises/minesweeper/src/main/java/.keep b/exercises/minesweeper/src/main/java/.keep
diff --git a/exercises/minesweeper/src/main/java/MinesweeperBoard.java b/exercises/minesweeper/src/main/java/MinesweeperBoard.java
diff --git a/exercises/nucleotide-count/src/main/java/.keep b/exercises/nucleotide-count/src/main/java/.keep
diff --git a/exercises/nucleotide-count/src/main/java/DNA.java b/exercises/nucleotide-count/src/main/java/DNA.java
diff --git a/exercises/ocr-numbers/src/main/java/.keep b/exercises/ocr-numbers/src/main/java/.keep
diff --git a/exercises/ocr-numbers/src/main/java/OpticalCharacterReader.java b/exercises/ocr-numbers/src/main/java/OpticalCharacterReader.java
diff --git a/exercises/pythagorean-triplet/src/main/java/.keep b/exercises/pythagorean-triplet/src/main/java/.keep
diff --git a/exercises/pythagorean-triplet/src/main/java/PythagoreanTriplet.java b/exercises/pythagorean-triplet/src/main/java/PythagoreanTriplet.java
diff --git a/exercises/queen-attack/src/main/java/.keep b/exercises/queen-attack/src/main/java/.keep
diff --git a/exercises/queen-attack/src/main/java/BoardCoordinate.java b/exercises/queen-attack/src/main/java/BoardCoordinate.java
diff --git a/exercises/queen-attack/src/main/java/QueenAttackCalculator.java b/exercises/queen-attack/src/main/java/QueenAttackCalculator.java
diff --git a/exercises/rectangles/src/main/java/.keep b/exercises/rectangles/src/main/java/.keep
diff --git a/exercises/rectangles/src/main/java/RectangleCounter.java b/exercises/rectangles/src/main/java/RectangleCounter.java
diff --git a/exercises/robot-simulator/src/main/java/Robot.java b/exercises/robot-simulator/src/main/java/Robot.java
diff --git a/exercises/run-length-encoding/src/main/java/.keep b/exercises/run-length-encoding/src/main/java/.keep
diff --git a/exercises/run-length-encoding/src/main/java/RunLengthEncoding.java b/exercises/run-length-encoding/src/main/java/RunLengthEncoding.java
diff --git a/exercises/saddle-points/src/main/java/Matrix.java b/exercises/saddle-points/src/main/java/Matrix.java
diff --git a/exercises/series/src/main/java/.keep b/exercises/series/src/main/java/.keep
diff --git a/exercises/series/src/main/java/Series.java b/exercises/series/src/main/java/Series.java
diff --git a/exercises/sublist/src/main/java/RelationshipComputer.java b/exercises/sublist/src/main/java/RelationshipComputer.java
diff --git a/exercises/word-count/src/main/java/.keep b/exercises/word-count/src/main/java/.keep
diff --git a/exercises/word-count/src/main/java/WordCount.java b/exercises/word-count/src/main/java/WordCount.java
diff --git a/exercises/wordy/src/main/java/.keep b/exercises/wordy/src/main/java/.keep
diff --git a/exercises/wordy/src/main/java/WordProblemSolver.java b/exercises/wordy/src/main/java/WordProblemSolver.java