diff --git a/java/common/org/linphone/core/LinphoneChatMessage.java b/java/common/org/linphone/core/LinphoneChatMessage.java
new file mode 100644
index 000000000..77238d270
--- /dev/null
+++ b/java/common/org/linphone/core/LinphoneChatMessage.java
@@ -0,0 +1,53 @@
+package org.linphone.core;
+
+import java.util.Vector;
+
+
+public interface LinphoneChatMessage {
+	interface StateListener{
+		void onLinphoneChatMessageStateChanged(LinphoneChatMessage msg, State state);
+	}
+	static class State {
+		static private Vector values = new Vector();
+		private final int mValue;
+		public final int value() {return mValue;}
+		
+		private final String mStringValue;
+		/**
+		 * Idle
+		 */
+		public final static State Idle = new State(0,"Idle");
+		/**
+		 * Incoming call received.
+		 */
+		public final static State InProgress = new State(1,"InProgress");
+		/**
+		 * Outgoing call initialiazed.
+		 */
+		public final static State Delivered = new State(2,"Delivered");
+		/**
+		 * Outgoing call in progress. 
+		 */
+		public final static State NotDelivered = new State(3,"NotDelivered");
+		
+		private State(int value,String stringValue) {
+			mValue = value;
+			values.addElement(this);
+			mStringValue=stringValue;
+		}
+		
+		public static State fromInt(int value) {
+
+			for (int i=0; i<values.size();i++) {
+				State state = (State) values.elementAt(i);
+				if (state.mValue == value) return state;
+			}
+			throw new RuntimeException("state not found ["+value+"]");
+		}
+		public String toString() {
+			return mStringValue;
+		}
+	}
+	Object getUserData();
+	void setUserData();
+}