diff --git a/java/org/rocksdb/CompressionType.java b/java/org/rocksdb/CompressionType.java
index c718d26a9..9f75b55e6 100644
--- a/java/org/rocksdb/CompressionType.java
+++ b/java/org/rocksdb/CompressionType.java
@@ -29,6 +29,8 @@ public enum CompressionType {
    * <p>If library cannot be found the enumeration
    * value {@code NO_COMPRESSION} will be returned.</p>
    *
+   * @param libraryName compression library name.
+   *
    * @return CompressionType instance.
    */
   public static CompressionType getCompressionType(String libraryName) {
diff --git a/java/org/rocksdb/DBOptionsInterface.java b/java/org/rocksdb/DBOptionsInterface.java
index 39ba13d25..83d7ba1e1 100644
--- a/java/org/rocksdb/DBOptionsInterface.java
+++ b/java/org/rocksdb/DBOptionsInterface.java
@@ -15,8 +15,8 @@ public interface DBOptionsInterface {
    * <p>You almost definitely want to call this function if your system is
    * bottlenecked by RocksDB.</p>
    *
-   * @param The total number of threads to be used by RocksDB. A good value
-   *            is the number of cores.
+   * @param totalThreads The total number of threads to be used by RocksDB.
+   *     A good value is the number of cores.
    *
    * @return the instance of the current Options
    */