🔹 Introduction Java is one of the most widely used programming languages for building robust, scalable applications. Whether you're preparing for a coding interview, brushing up on fundamentals, or practicing for competitive exams, solving coding problems is the best way to improve your logic and confidence. In this guide, we've compiled 50 essential Java coding questions with answers —ranging from simple to intermediate levels. Each problem includes a clear Java code example to help you understand the logic and syntax step-by-step. This collection covers topics like loops, arrays, strings, OOP, searching, sorting, and more—making it perfect for beginners and intermediate learners alike. Let’s get started and level up your Java programming skills! 🔹 1. Swap two numbers java int a = 5 , b = 10 ; int temp = a; a = b; b = temp; System.out.println( "a = " + a + ", b = " + b); 🔹 2. Check even or odd java int num = 7 ; System.out.println((num % 2...