multiline: java: modify start_state(#4949)
multiline: java: modify start_state(#4949)

Java parser matches below python exception log.
'Exception: ('spam', 'eggs')'

This patch is to ignore 'Exception:' at the beginning of line.

Signed-off-by: Takahiro Yamashita <8b9f03f78cb27351a99f79113f99e589b65190d5@gmail.com>

nokute78/fluent-bit,nokute78/fluent-bit,fluent/fluent-bit,nokute78/fluent-bit,fluent/fluent-bit,nokute78/fluent-bit,nokute78/fluent-bit,nokute78/fluent-bit,fluent/fluent-bit,fluent/fluent-bit,fluent/fluent-bit,nokute78/fluent-bit,fluent/fluent-bit,fluent/fluent-bit,fluent/fluent-bit,fluent/fluent-bit,nokute78/fluent-bit,nokute78/fluent-bit,fluent/fluent-bit,nokute78/fluent-bit,nokute78/fluent-bit,fluent/fluent-bit,nokute78/fluent-bit,fluent/fluent-bit