true false true true Abstraction issuesJava Control flow issuesJava Google Web Toolkit issues Java Logging issuesJava Memory issuesJava Security issuesJava Serialization issuesJava SerializableHasSerialVersionUIDField 1609748652281 1609748652281 1622720201192 1622720201192 1622725496974 1622725496974 1622797019995 1622797019995 1622797958801 1622797958801 1.8 1.8