Which category of primitive functions has a function that returns an object’s height?

When writing a block of code in which something can go wrong, where should you place the block?

A. It should be placed in a try block. B. It should be placed after a catch statement. C. It should be prefaced with a finally statement. D. It should be defined as an exception block.

Which of the following statements are true?

a. ObjectInputStream/ObjectOutputStream enables you to perform I/O for objects in addition for primitive type values and strings. b. Since ObjectInputStream/ObjectOutputStream contains all the functions of DataInputStream/DataOutputStream, you can replace DataInputStream/DataOutputStream completely by ObjectInputStream/ObjectOutputStream. c. To write an object, the object must be serializable. d. The Serializable interface does not contain any methods. So it is a mark interface. e. If all the elements in an array is serializable, the array is serializable too.