Java: Fix deprecation warnings. #84

Job	Run time
extensions (csharp)	7s
library_sources_extensions (csharp)	4s
extensions (java)	5s
library_sources_extensions (java)	6s
library (cpp)	3s
queries (cpp)	5s
library (csharp)	2s
queries (csharp)	4s
library (go)	6s
queries (go)	3s
library (java)	5s
queries (java)	4s
library (javascript)	6s
queries (javascript)	3s
library (python)	4s
queries (python)	3s
library (ruby)	5s
queries (ruby)	5s
	1m 20s

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