(Java) Specify number of bits (length) when converting binary number to string?

Question

I\'m trying to store a number as a binary string in an array but I need to specify how many bits to store it as.

For example, if I need to store 0 with two bits I ne

Answer 1

Try this:

String binaryString = String.format("%"+Integer.toString(size)+"s",Integer.toBinaryString(19)).replace(" ","0");

where size can be any number the user wants