Write lines of text to file using a PrintWriter

This example shows how to write multiple lines of text to a file.
The method writeLinesToFile takes three arguments:

1. The name of the file, could be an absolute path but in the example just a filename
so it will be created in the current directory.

2. An array of Strings where each element is one line in the file.

3. A boolean value to determine if any existing file with the same name should be
appended to or not. In the example we choose to append.

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