check fixes/issues for language-java

[LeanderK]

there are some fixes for language java that were not merged into master and some open issues. This issue is used to track and resolve them.

• energyhub/language-java@a2b37cb
  arrays in annotations
• Incorrect parsing of conditions vincenthz/language-java#61
  operator precedence
• parser doesn't understand precedence for operator like + and * properly. vincenthz/language-java#35
  another operator precedence, probably