Initial commit.
Modified Main.java

Moved the try/catch block to the imagegetter thread.
Cleaned up ImageGetter.java

Cleaned up ImageGetter.java and wrote constructor that takes in a
String value to be passed to the thread URL variable, and a boolean to
allow the user to decide whether the image should be launched after it
is downloaded.
Modified Main.java

Updated the imports, and created an ImageGetter instance stored in a
variable that can be run. The user can pass in their own unique URL and
whether they want the image opened. Upon running the code, after the
thread completed it continued to run, thus we added a system exit
manually to the end of the program.