This function should return a string representing the calling object

* Example *

If the calling object contained the following values:

- filename = "operahouse.jpg"

- location = "Sydney"

- fileSize = 420

- people = ["John", "Sarah", "Claire"]

then toString() should return the following multiline string:

-name: operahouse

-extension: jpg

-location: sydney

-size: 420b

-people: John, Sarah and Claire

* Note: *

- the 'name' should contain everything in 'filename' to the left of the last dot

- the 'extension' should containing everything in 'filename' to the right of the last dot

- If there is only one name in the people array there should be no comma or 'and'

- You can make a new line in a string using " "

- You may not use the StringBuilder class *

public String toStringAdvanced() {

//TO BE CONTINUED

DO NOT USE STRINGBUILDER CLASS