fixup! fixup! [refactor] Migrate from JUnit 4 to JUnit 5

Author: adamretter

java/src/test/java/org/rocksdb/KeyMayExistTest.java

@@ -366,7 +366,7 @@ public void keyMayExistBBCF() throws RocksDBException {
     db.put(columnFamilyHandleList.get(1), "keyBBCF1".getBytes(UTF_8), "valueBBCF1".getBytes(UTF_8));
 
     // 0 is the default CF
-    byte[] key = "keyBBCF0".getBytes(UTF_8);
+    final byte[] key = "keyBBCF0".getBytes(UTF_8);
     final ByteBuffer keyBuffer = ByteBuffer.allocateDirect(key.length);
     keyBuffer.put(key, 0, key.length);
     keyBuffer.flip();
@@ -378,12 +378,12 @@ public void keyMayExistBBCF() throws RocksDBException {
     assertThat(db.keyMayExist(columnFamilyHandleList.get(0), keyBuffer)).isEqualTo(true);
 
     // 1 is just a CF
-    key = "keyBBCF1".getBytes(UTF_8);
-    final ByteBuffer keyBuffer1 = ByteBuffer.allocateDirect(key.length);
-    keyBuffer1.put(key, 0, key.length);
+    final byte[] key1 = "keyBBCF1".getBytes(UTF_8);
+    final ByteBuffer keyBuffer1 = ByteBuffer.allocateDirect(key1.length);
+    keyBuffer1.put(key1, 0, key1.length);
     keyBuffer1.flip();
 
-    assertThat(db.keyMayExist(keyBuffer)).isEqualTo(false);
+    assertThat(db.keyMayExist(keyBuffer1)).isEqualTo(false);
     keyBuffer1.flip();
     assertThat(db.keyMayExist(columnFamilyHandleList.get(1), keyBuffer1)).isEqualTo(true);
     keyBuffer1.flip();