FileDisplay Class
Write a class named FileDisplay with the following methods:
• Constructor: The class’s constructor should take the name of a file as an argument.
• displayHead : This method should display only the first five lines of the file’s contents. If the file contains less than five lines, it should display the file’s entire contents.
• displayContents : This method should display the entire contents of the file, the name of which was passed to the constructor.
• displayWithLineNumbers : This method should display the contents of the file, the name of which was passed to the constructor. Each line should be preceded with a line number followed by a colon. The line numbering should start at 1.
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