java - How to avoid saving a file on hard drive? -

each time run following code, file saved on hard drive. however, want saved in object storage container.

osclient os = osfactory.builder()                 .endpoint("...")                 .credentials("...","...")                 .tenantname("...")                 .authenticate();          string containername = "myimgs";         string objectname = "test.jpg";  bufferedwriter output = null;         try {             file f = new file(objectname);             output = new bufferedwriter(new filewriter(f));             output.write(text);             string etag = os.objectstorage().objects().put(containername,                                                             objectname,                                                             payloads.create(f));         } catch ( ioexception e ) {             e.printstacktrace();         } 

update: using api.

looking @ javadoc payloads has method takes in inputstream. read string inputstream can do

payloads.create(new bytearrayinputstream(text.getbytes()); 

this avoid need create file have read.