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CEIL (expression) An expression which is a numeric value or numeric data type. Strings are implemented using character arrays. This section contains programs on Digits (Number) Manipulation like Reverse of a Number, Check Palindrome Number, Check Prime Number, Check Armstrong Number, Check Perfect Square Number, Count total digits in a Number etc. Test your codeYou can compile your code and test it for errors and accuracy before submitting. View Hozaifa Moaj’s profile on LinkedIn, the world's largest professional community. 85856 4 1216. Java program to print or calculate addition of two numbers with sample outputs and example programs. First of all I am sorry for not posting these many days. If you expect me to be excited at your company, you should be excited as well. 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