java - ObjectInputStream.read() returning -1, but readObject returns the object -

java - ObjectInputStream.read() returning -1, but readObject returns the object -

am serialize object , deserialize object get:

0 available() -1 read()

eofexception readbyte()

public static element getcacheobject(string key, string cachename, string server) throws ioexception, classnotfoundexception, connectexception { string url = stringutils.join(new string[] { server, cachename, key}, "/"); getmethod getmethod = new getmethod(url); objectinputstream oin = null; inputstream in = null; int status = -1; element element = null; seek { status = httpclient.executemethod(getmethod); if (status == httpstatus.sc_not_found) { // if content deleted homecoming null; } in = getmethod.getresponsebodyasstream(); oin = new objectinputstream(in); system.out.println("oin.available():" + oin.available()); // returns 0 system.out.println("oin.read():" + oin.read()); // returns -1 element = (element) oin.readobject(); // returns object } grab (exception except) { except.printstacktrace(); throw except; } { seek { oin.close(); in.close(); } grab (exception except) { except.printstacktrace(); } } homecoming element; }

what missing here?

i think see behaviour because first create objectinputstream inputstream , check available on inputstream. if check constructor of objectinputstream can see following:

public objectinputstream(inputstream in) throws ioexception { verifysubclass(); bin = new blockdatainputstream(in); handles = new handletable(10); vlist = new validationlist(); enableoverride = false; readstreamheader(); bin.setblockdatamode(true); }

there method readstreamheader reads header input stream. possible info read inputstream during construction of objectinputstream.

java serialization deserialization ehcache objectinputstream