Update metadata column using Java REST

As I understand, you have to make a 3 steps to update the metadata on the file. I have uploaded a file to my document library using POST and after that made a GET and took out the metadata i need to change, in this case "Title". The next step is to make a PUT and send the metadata with it but how? I don't want to implement Microsofts classes.

Here is the code to upload a file:

documentLibrary = sharepoint server url to document library

http://industrial-ex/sites/tifdemo/enovia/

enoviaDocument = local path to a file

D:\tif-destination

if (enoviaDocument.isFile()) {         
                    FileInputStream fileInputStream = new FileInputStream(enoviaDocument);
                    PostMethod method = new PostMethod(documentLibrary + enoviaDocument.getName());
                    RequestEntity requestEntity = new InputStreamRequestEntity(fileInputStream);
                    method.setRequestEntity(requestEntity);
                    authentication.getHttpClient().executeMethod(method);
                    System.out.println("STATUS CODE: " + method.getStatusCode() + " "
                            + "STATUS TEXT: " + method.getStatusText());
                    System.out.println("STATUS LINE: " + method.getStatusLine());

Here is the code to get file:

String url = "http://industrial-ex/sites/tifdemo/_api/web/lists/getbytitle('enovia')/items/";
                    GetMethod get = new GetMethod(url);
                    get.setRequestHeader("Accept", "application/json; odata=verbose;");
                    authentication.getHttpClient().executeMethod(get);
                    JsonParser jsonParser = new JsonParser();
                    JsonElement jsonElement = jsonParser.parse(get.getResponseBodyAsString());
                    JsonObject asJsonObject = jsonElement.getAsJsonObject();
                    String title = asJsonObject.get("d")
                            .getAsJsonObject()
                            .get("results")
                            .getAsJsonArray()
                            .get(0)
                            .getAsJsonObject()
                            .get("Title")
                            .getAsString();
                    System.out.println("Metadata Title: " + title);

The next step is to make a PUT with metadata but how?