Using class Personnel from Section 4.9, create a simple GUI-based program

called ChooseSaveFile.java that has no components, but creates an instance of

itself within main and has the usual window-closing code (also within main).

Within the constructor for the class, declare and initialise an array of three

Personnel objects (as in program VectorSerialise.java from Section 4.9) and

write the objects from the array to a file (using an ObjectOutputStream). The

name and location of the file should be chosen by the user via a JFileChooser

object. Note that you will need to close down the (empty) application window

by clicking on the window close box.