(no ticket). java: Make Unions print binary values more tersely

Bytes were getting sign-extended out into giant strings of f's. This change makes sure only the bottom byte is used.

git-svn-id: https://svn.apache.org/repos/asf/incubator/thrift/trunk@894222 13f79535-47bb-0310-9956-ffa450edef68
1 file changed