Singleton Pattern Program
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Write a Java program (non-GUI preferred) to demonstrate the Singleton pattern.
The key parts of the singleton pattern are:
A private static variable to store the single instance called the singleton
A public static method for callers to get a reference to the instance
A private constructor so no callers can instantiate the object directly
Using these key parts, write a Java program that will allow a user of the program to assign only one runner to each of the 8 lanes of running track in a field.
Include a brief documentation (in the code or in a separate document) to explain the input (if any), processing and output of the program.

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