Integer by reference..

[Joe]

Is there any easy way to pass an int or Integer by reference in Java? I want to but it won't let me. :(

[d&q]

Use an int array with one value? That's probably not the best method though..

[Chavo]

passing be reference/value isn't as black & white in java as it is in other languages, what are you trying to do?

[Joe]

filename, formula, and filetime should be byvalue and checksum, verhas, and exeinfo should be byreference.

exeinfo is already byreference, but my attempt to pass checksum and verhash as an object (Integer opposed to int) failed.

Code Select Expand

public void getVersionCheck(String filename, String formula, long filetime, Integer checksum, Integer verhash, String exeinfo) throws IOException
    {
        Socket s = getConnection();
        BufferedReader in = getReader(s);
        BufferedWriter out = getWriter(s);
       
BNLSPacket pkt = new BNLSPacket(BNLS_VERSIONCHECKEX2);
pkt.addDWord(getBnlsProductId(game)); // (DWORD) Product ID
pkt.addDWord(0); // (DWORD) Flags**
pkt.addDWord(0); // (DWORD) Cookie
pkt.addLong(filetime); // (ULONGLONG) Timestamp for version check archive
pkt.addNTString(filename); // (STRING) Version check archive filename.
pkt.addNTString(formula); // (STRING) Checksum formula.
out.write(pkt.getChars());
out.flush();

BNLSPacket inPkt = getNextPacket(in);
/*(BOOL) Success*
(DWORD) Version.
(DWORD) Checksum.
(STRING) Version check stat string.
(DWORD) Cookie.
(DWORD) The latest version code for this product.*/
inPkt.removeDWord();
verhash = inPkt.removeDWord();
checksum = inPkt.removeDWord();
exeinfo = inPkt.removeNTString();
   
    }

[Sidoh]

Here's a good article on this subject, Joe.  In short, I think you're going to have to find a different way to solve this problem.  You could invent a convoluted way to implement a "by reference" method (like deuce suggested, the only thing I can think of offhand is to have an object or an array of some sort), but I think you can come up with something better.

[Chavo]

You could encapsulate all your parameters in an object and then just pass references to that object.

[Sidoh]

You could encapsulate all your parameters in an object and then just pass references to that object.

I recommended that, but in a less elaborate way. :(

Like I said though, I don't think there's any non-convoluted way to do what you're wanting to do.

[Chavo]

encapsulation isn't a convoluted unless you do it in an ugly way like a one element array!

[d&q]

encapsulation isn't a convoluted unless you do it in an ugly way like a one element array!

:(

[Chavo]

lol, that wasn't a shot at you deuce, its just an ugly way

[Warrior]

put all your vars in a object then pass that by ref.

im a genius.

[rabbit]

Make a class that consists entirely of the value types you want to get back, and return that from the function.  That is what Java is made for.

[MyndFyre]

Make a class that consists entirely of the value types you want to get back, and return that from the function.  That is what Java is made for.

Heh.  I was thinking that myself.  I'm pretty sure that's what Sidoh was thinking, too.  And Warrior.  And unTactical.  ;)

[rabbit]

It's what anyone who's gotten past chapter 2 of "Java for Dummies" should think.

[Sidoh]

encapsulation isn't a convoluted unless you do it in an ugly way like a one element array!

Haha, it is for some situations.

It's what anyone who's gotten past chapter 2 of "Java for Dummies" should think.

You bug me.