Fixed after Codacy review

Author: rijnb

src/main/java/com/mapcode/UnknownTerritoryException.java

@@ -17,6 +17,7 @@
 package com.mapcode;
 
 import javax.annotation.Nonnull;
+import javax.annotation.Nullable;
 
 /**
  * This runtime exception is thrown for unknown territory codes. It is specifically a runtime exception, because
@@ -37,4 +38,9 @@ public UnknownTerritoryException(final int code) {
         super();
         this.code = code;
     }
+
+    @Nullable
+    public Integer getCode() {
+        return code;
+    }
 }

src/test/java/com/mapcode/EncodeDecodeTest.java

@@ -27,8 +27,8 @@
 import java.util.concurrent.TimeUnit;
 import java.util.concurrent.atomic.AtomicInteger;
 
+import static junit.framework.TestCase.assertFalse;
 import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertTrue;
 
 @SuppressWarnings({"OverlyBroadThrowsClause", "ProhibitedExceptionDeclared"})
 public class EncodeDecodeTest {
@@ -75,7 +75,7 @@ private static void doEncodeDecode(final long seed) throws InterruptedException
 
             // Check encodeToShortest and encodeToInternational.
             final List<Mapcode> resultsAll = MapcodeCodec.encode(latDeg, lonDeg);
-            assertTrue(!resultsAll.isEmpty());
+            assertFalse(resultsAll.isEmpty());
             assertEquals("encodeToInternational failed, result=" + resultsAll,
                     resultsAll.get(resultsAll.size() - 1), mapcodeInternational);
 

src/test/java/com/mapcode/ReferenceFileTest.java

@@ -32,6 +32,7 @@
 import java.util.concurrent.atomic.AtomicInteger;
 import java.util.concurrent.atomic.AtomicLong;
 
+import static junit.framework.TestCase.assertFalse;
 import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertTrue;
 
@@ -344,7 +345,7 @@ private static ReferenceRec getNextReferenceRecord(@Nonnull final ChunkedFile ch
         final ArrayList<MapcodeRec> mapcodeRecs = new ArrayList<MapcodeRec>();
         for (int i = 0; i < count; ++i) {
             final String line = chunkedFile.readNonEmptyLine();
-            assertTrue("Line should not be empty", !line.isEmpty());
+            assertFalse("Line should not be empty", line.isEmpty());
 
             final String[] mapcodeLine = line.split(" ");
             assertTrue("Expecting 1 or 2 elements, territory and mapcode, got: " + mapcodeLine.length + ", " + line,