How to convert a long to a fixed-length 16-bit binary string?

Question

Hi i want to convert a long integer to binary but the problem is i want a fixed 16 bit binary result after conversion like if i convert 2 to 16 bit binary it should give me

Answer 1

I had to do it for a 32 bit number and ended up with:

String stringWord = Long.toBinaryString(word);
while (stringWord.length() < 32) // ensure that length of word is 32
        stringWord = "0" + stringWord;