Convert bitstring to byte in java

I need to set each bit in 1 byte in Java.

bit7 -  1,
bit6 -  1,
bit5 - 1,
bit4 -  0,
bit3 – 0,
bit2 – 0,
bit1 – 0,
bit0 – 0

I've written:

byte extra_dop = 0b00000111;

but got the following error:

binary literals are not supported in -source 1.5 (use -source 7 or higher to enable binary literals)