The parameters of a remote method must only include parameters of the following types:

• Any supported primitive data types

• Any single-dimension array of a supported primitive data type

The return value of a remote method must only be one of the following types:

• Any supported primitive data type

• Any single-dimension array type of a supported primitive data type

• Any remote interface type

• A void return

All parameters, including array parameters, are always transmitted by value during the remote method invocation. The return values from a remote method are transmitted by value for primitive types and arrays. Return values that are remote object references are transmitted by reference using a remote object reference descriptor.