Java long to binary

something I thought was simple ends up not so much.

I need to convert a long number to binary.

For example:

String b =  Integer.toBinaryString(1028);

the output is 10000000100

but when I use Integer.toBinaryString(2199023255552); it does not work. Of course the number is too big for this function and I can't find one that does convert from long.

Any suggestions?

Thank you.