Enable debug info for Java builds

See:
* https://docs.oracle.com/javase/9/tools/javac.htm#GUID-AEEC9F07-CB49-4E96-8BC7-BCC2C7F725C9__GUID-38E8A593-FF4E-4EEA-ADC1-84429B08CCA2
* https://docs.oracle.com/javase/9/tools/javac.htm#GUID-AEEC9F07-CB49-4E96-8BC7-BCC2C7F725C9__GUID-A649BE59-30C2-48E8-A766-FA5CD21AB3AF

Fixes #2859

RELNOTES: Enable debug info for Java builds
PiperOrigin-RevId: 166129309
diff --git a/tools/jdk/BUILD b/tools/jdk/BUILD
index 9029782..5c8baac 100644
--- a/tools/jdk/BUILD
+++ b/tools/jdk/BUILD
@@ -181,6 +181,8 @@
     ],
     misc = [
         "-XDskipDuplicateBridges=true",
+        "-g",
+        "-parameters",
     ],
     singlejar = ["@bazel_tools//tools/jdk:singlejar"],
     source_version = "8",