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Master the Art of
Java Programming
A comprehensive journey from the basics to advanced OOP, streams, and I/O. Learn syntax, data types, collections, OOP, exception handling, and more.
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public class Main { static int factorial(int n) { if (n <= 1) return 1; return n * factorial(n - 1); } public static void main(String[] a) { System.out.println(factorial(5)); } } // Output: 120
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