Java Programming – 100+ Practice Exam Q&A on Arrays, Loops, Strings, Methods – CS101

This document presents over 100 practice-style Java exam questions and answers tailored for the Intro to Java Programming (CS101) course in the 2025/2026 academic year. Designed to simulate real exam questions, it is best suited for first-year Computer Science, Software Engineering, and IT students preparing for midterms, finals, or coding assessments. All questions include a clearly marked correct answer, making this resource ideal for self-testing, revision drills, or quick concept brushing. The document focuses on Java arrays, logic flow, loops, methods, string manipulation, and number processing—frequent topics in introductory Java exams. Each question is scenario-based and uses real Java syntax, ranging from code output prediction to method return value tracing and loop simulations. Topics covered include: Array Handling: declaration, indexing logic, multidimensional behavior, value updates String Manipulation: substring(), charAt(), concatenation, indexing, escape sequences Loop Constructs: for, while, nested loops, logic traps, accumulator patterns Method Analysis: return values, parameters, control flow, scope, variable initialization Modular Arithmetic & Math Class: M(), M(), %, division handling Scanner & Input Simulation: token-based parsing, .hasNext(), .nextInt(), string reads Output Prediction: tracing program flow and calculating expected terminal output Control Flow: ternary logic, increment/decrement (++, --), and nested operations Boolean Evaluation: loop conditions, odd/even logic, condition chaining Digit Operations: digit counting, digit summing, while-based division patterns Loop Logic: step control, conditions for printing sequences like odd numbers or multiples Practice-Driven Function Design: multiple-choice validation of loop design and logic targeting expected outcomes This material is especially valuable for: CS101 or first-year Java programming students facing exams or timed quizzes Self-paced learners practicing applied Java code tracing and problem-solving Tutors creating Java question banks for exams or practice worksheets Students preparing for entrance or placement exams with Java sections Its structure focuses on immediate feedback, offering a productive way to revise logic-heavy topics and reinforce Java syntax familiarity under pressure. Keywords: Java practice exam, Java array questions, Java loops, Java methods, Java output tracing, Java Scanner input, Java for loop, Java substring, Java charAt, Java digit sum, Java method return, Java odd even, CS101 Java practice, Java string manipulation, Java logic questions