Write a Java program that prompts user for a positive integer ranging between 0-99999. The program shall read the input as int; compute and print the sum of all its digits. Your program needs to perform input validation and exit the program if the input data type is incorrect. For example, Enter a positive integer: 12345 The sum of all digits is: 15

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Variables and Constant

Constants and variables are widely used in mathematical equations and expressions. They are also commonly found in the domain of programming, where each language has its own way to differentiate between a constant and a variable. Since they have all sorts of applications, knowing their differences is a good place to start.