Incorporating custom exception

Author: jagdish-15

exercises/practice/two-bucket/.meta/src/reference/java/TwoBucket.java

@@ -104,7 +104,7 @@ private void checkIfImpossible(int desiredLiters, int bucketOneCap, int bucketTw
         boolean invalidDivision = desiredLiters % gcd(bucketOneCap, bucketTwoCap) != 0;
 
         if (exceedsCapacity || invalidDivision) {
-            throw new IllegalArgumentException("impossible");
+            throw new UnreachableGoalException("impossible");
         }
     }
 

exercises/practice/two-bucket/.meta/src/reference/java/UnreachableGoalException.java

@@ -0,0 +1,14 @@
+public class UnreachableGoalException extends RuntimeException {
+    
+    public UnreachableGoalException() {
+        super();
+    }
+
+    public UnreachableGoalException(String message) {
+        super(message);
+    }
+
+    public UnreachableGoalException(String message, Throwable cause) {
+        super(message, cause);
+    }
+}

exercises/practice/two-bucket/src/main/java/Result.java

@@ -21,5 +21,4 @@ public String getFinalBucket() {
     public int getOtherBucket() {
         return otherBucket;
     }
-
 }

exercises/practice/two-bucket/src/main/java/UnreachableGoalException.java

@@ -0,0 +1,14 @@
+public class UnreachableGoalException extends RuntimeException {
+    
+    public UnreachableGoalException() {
+        super();
+    }
+
+    public UnreachableGoalException(String message) {
+        super(message);
+    }
+
+    public UnreachableGoalException(String message, Throwable cause) {
+        super(message, cause);
+    }
+}

exercises/practice/two-bucket/src/test/java/TwoBucketTest.java

@@ -81,7 +81,7 @@ public void testBucketOneSizeTwoBucketTwoSizeThreeStartWithOne() {
     @Test
     public void testReachingGoalIsImpossible() {
 
-        assertThatExceptionOfType(IllegalArgumentException.class)
+        assertThatExceptionOfType(UnreachableGoalException.class)
                 .isThrownBy(() -> new TwoBucket(6, 15, 5, "one"))
                 .withMessage("impossible");
 
@@ -103,7 +103,7 @@ public void testBucketOneSizeSixBucketTwoSizeFifteenStartWithOne() {
     @Test
     public void testGoalLargerThanBothBucketsIsImpossible() {
 
-        assertThatExceptionOfType(IllegalArgumentException.class)
+        assertThatExceptionOfType(UnreachableGoalException.class)
                 .isThrownBy(() -> new TwoBucket(5, 7, 8, "one"))
                 .withMessage("impossible");