Q2. Write a program that reports the contents of a compressed-gas cylinder based on the first letter of the cylinder's color. The program input is a character representing the observed color of the cylinder: "Y" or "y" for yellow, "O" or "o" for orange, and so on. Cylinder colors and associated contents are as follows: Orange ammonia Brown carbon monoxide Yellow hydrogen Green oxygen Your program should respond to input of a letter other than the first letters of the given colors with the message, Contents unknown.(Use switch case)

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A: The answer is given in the below step

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Multithreading methods

Multithreading is a type of multitasking. Java supports built-in multithreaded programming. In multithreading, a program has two or more parts that run concurrently. Each part is a thread, and every single thread describes a unique execution path. Multiple threads execute parallel to each other.