Java - Make byte array as a download -

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i have zip file byte array (byte[]), write file system using,

        fileoutputstream fos = new fileoutputstream("c:\\test1.zip");         fos.write(decodedbytes);  // decodedbytes zip file byte array          fos.close();

instead of writing file , reading make download, make byte array download directly, tried this, 

    response.setcontenttype("application/zip");     response.setheader("content-disposition", "attachment; filename=\"file.zip\"");     servletoutputstream outstream = response.getoutputstream();     outstream.write(decodedbytes);  // decodedbytes zip file byte array

this not working, i'm getting empty file. how can make byte array download?

update: added clause , closed servletoutputstream , worked.

    }catch (exception e) {         log.error(this, e);     } {         try{             if (outstream != null) {                 outstream.close();                           }         } catch (ioexception e) {             log.error(this, "download: error during closing resources");         }     }

pankaj solution works.

try following:

servletoutputstream outstream = response.getoutputstream(); response.setcontenttype("application/zip"); response.setheader("content-disposition", "attachment; filename="data.zip""); outstream.write(decodedbytes); outstream.flush();

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