s. Consider the statement Scanner a = new Scanner(System.in); Here Scanner is the class name, a is the name of object, new keyword is used to allocate the memory and System.in is the input stream. Following methods of Scanner class are used in the program below :- 1) nextInt to input an integer 2) nextFloat to input a float 3) nextLine to input a string Java programming source code

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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.