AkousaInvalidClassExceptionA serialized class has an incompatible version or invalid format.
The serialVersionUID of the serialized data does not match the class's current serialVersionUID. The class structure has changed in a way that is incompatible with the serialized data.
Add an explicit serialVersionUID to the class. Ensure class changes are backward-compatible. Clear or migrate old serialized data. Use a versioning strategy for serialization.
InstantiationExceptionAn attempt to create an instance of an abstract class or interface using reflection.
DirectoryNotEmptyExceptionA directory deletion fails because the directory is not empty.
SocketExceptionA socket operation fails, such as creating or accessing a socket.
ReflectiveOperationExceptionA reflection operation throws an exception.
DateTimeParseExceptionA date/time string cannot be parsed according to the expected format.
NoSuchMethodErrorA method is called at runtime but does not exist in the class.