New to Java

What? I don't understand what exactly you want.
Why? UTF-16 (and UTF-8) are perfectly capable of representing every unicode codepoint, no need to use UTF-32 specifically.

I Know, Not Specifically but hw to do tht?

Do you mean something like this -

        byte[] helloAsUTF32Bytes = "Hello".getBytes("utf-32");
        DataInputStream din = new DataInputStream(new ByteArrayInputStream(helloAsUTF32Bytes));
        while (true)
        {
            try
            {
                int v = din.readInt();
                System.out.println(v);
            } catch (EOFException e)
            {
                break;
            }
        }

http://www.catb.org/~esr/faqs/smart-questions.html#writewell

How To Ask Questions The Smart Way
Eric Steven Raymond
Rick Moen

Write in clear, grammatical, correctly-spelled language

We've found by experience that people who are careless and sloppy writers are usually also careless and sloppy at thinking and coding (often enough to bet on, anyway). Answering questions for careless and sloppy thinkers is not rewarding; we'd rather spend our time elsewhere.

So expressing your question clearly and well is important. If you can't be bothered to do that, we can't be bothered to pay attention. Spend the extra effort to polish your language. It doesn't have to be stiff or formal - in fact, hacker culture values informal, slangy and humorous language used with precision. But it has to be precise; there has to be some indication that you're thinking and paying attention.

Spell, punctuate, and capitalize correctly. Don't confuse "its" with "it's", "loose" with "lose", or "discrete" with "discreet". Don't TYPE IN ALL CAPS; this is read as shouting and considered rude. (All-smalls is only slightly less annoying, as it's difficult to read. Alan Cox can get away with it, but you can't.)

More generally, if you write like a semi-literate b o o b you will very likely be ignored. So don't use instant-messaging shortcuts. Spelling "you" as "u" makes you look like a semi-literate b o o b to save two entire keystrokes.