[Java] Fix warning.
[Java] Fix warning.

real-logic/simple-binary-encoding,marksantos/simple-binary-encoding,marksantos/simple-binary-encoding,PKRoma/simple-binary-encoding,PKRoma/simple-binary-encoding,marksantos/simple-binary-encoding,PKRoma/simple-binary-encoding,marksantos/simple-binary-encoding,PKRoma/simple-binary-encoding,real-logic/simple-binary-encoding,marksantos/simple-binary-encoding,marksantos/simple-binary-encoding,real-logic/simple-binary-encoding,real-logic/simple-binary-encoding,PKRoma/simple-binary-encoding,real-logic/simple-binary-encoding,PKRoma/simple-binary-encoding,PKRoma/simple-binary-encoding,marksantos/simple-binary-encoding,real-logic/simple-binary-encoding,marksantos/simple-binary-encoding,real-logic/simple-binary-encoding