Q181. What happens when you add a double value to a String?
The result is a String object.
Q182. What is your platform's default character encoding?
If you are running Java on English Windows platforms, it is probably Cp1252. If you are running Java on English Solaris platforms, it is most likely 8859_1..
Q183. Which package is always imported by default?
The java.lang package is always imported by default.
Q184. What interface must an object implement before it can be written to a stream as an object?
An object must implement the Serializable or Externalizable interface before it can be written to a stream as an object.