RemoveMQMessage.java

String queueName="myQueue";
String queueMessage="This is my test message";
String brokerURI="https://mq-us-west-2.anypoint.mulesoft.com/api/v1/organizations/";

brokerURI = brokerURI + orgId +"/environments/"+ envId +"/destinations/"+ queueName+"/messages";

// Post message to existing queue using API
String messageId=UUID.randomUUID().toString();
String postURI=brokerURI+"/"+messageId;
System.out.println(postURI);

// Message acknowledgement, effectively deleting message from the queue
		
JSONArray jsonArrayAck= (JSONArray) jsonParser.parse(outputGet);  // Parse json output from retrieve message earlier to get lock id
JSONObject structureAck =(JSONObject) ((JSONObject)jsonArrayAck.get(0)).get("headers");
String lockId= (String)structureAck.get("lockId");

WebResource webResourceAck = client.resource(postURI);
String inputAck="{ \"lockId\": \""+lockId+"\" }";
ClientResponse responseAck=webResourceAck.header("Authorization"," bearer" + access_token)
 					 .type("application/json")
					 .accept("application/json")
					 .delete(ClientResponse.class, inputAck);
		
String outputAck = responseAck.getEntity(String.class);
System.out.println("Ack Message: \n" + outputAck);