diff --git a/ompi/mpi/java/java/Comm.java b/ompi/mpi/java/java/Comm.java
index 4407936544..c8693153f2 100644
--- a/ompi/mpi/java/java/Comm.java
+++ b/ompi/mpi/java/java/Comm.java
@@ -65,7 +65,7 @@ import static mpi.MPI.assertDirectBuffer;
 /**
  * The {@code Comm} class represents communicators.
  */
-public class Comm implements Freeable
+public class Comm implements Freeable, Cloneable
 {
 	public final static int TYPE_SHARED = 0;
 	protected final static int SELF  = 1;
diff --git a/ompi/mpi/java/java/Datatype.java b/ompi/mpi/java/java/Datatype.java
index 5d9cfbdc56..d0ca5c24d0 100644
--- a/ompi/mpi/java/java/Datatype.java
+++ b/ompi/mpi/java/java/Datatype.java
@@ -52,7 +52,7 @@ import java.nio.*;
 /**
  * The {@code Datatype} class represents {@code MPI_Datatype} handles.
  */
-public final class Datatype implements Freeable
+public final class Datatype implements Freeable, Cloneable
 {
 	protected long handle;
 	protected int baseType;
diff --git a/ompi/mpi/java/java/Info.java b/ompi/mpi/java/java/Info.java
index 428ef0ba50..82c3f668a5 100644
--- a/ompi/mpi/java/java/Info.java
+++ b/ompi/mpi/java/java/Info.java
@@ -23,7 +23,7 @@ package mpi;
 /**
  * This class represents {@code MPI_Info}.
  */
-public final class Info implements Freeable
+public final class Info implements Freeable, Cloneable
 {
 	protected long handle;
 	protected static final long NULL = getNull();