This document presents over 100 thoroughly answered Java exam questions for the Intro to Java Programming (CS101) course, updated and structured for the 2025/2026 academic year. It is designed for first-year Computer Science, Software Engineering, and IT students, especially those preparing for university exams, assessments, or foundational Java certifications such as OCAJP.
Each question is followed by its verified correct answer, covering everything from method definitions and memory references to file handling and logical flow. The format includes theoretical concepts, practical examples, output-based logic tracing, and error-identification exercises—making it a complete tool for independent review, mock exams, or tutor-led assessment prep.
Core topics covered:
Method Fundamentals: parameters, return types, method scope, static methods, headers, and signatures
Memory & Variables: object references, primitive data types, symbolic memory names, constants, nulls
Control Flow & Logic: if-else, switch, boolean expressions, logical and relational operators
Loop Structures: for, while, do-while, infinite loops, loop counting, nested loops
File I/O Handling: FileWriter, PrintWriter, Scanner, reading from and appending to files, hasNext()
Error Types: compile-time, runtime, logic, syntax errors, and debugging practices
Program Execution: JVM, .java vs .class, bytecode, Java API usage, method overloading
Operators & Evaluation: ternary operator, precedence, increment behavior (++i vs i++), expression solving
GUI Reference: brief mention of layout management (FlowLayout)
Data & Decision Constructs: sentinel values, flags, delimiter handling, conditional logic nesting
The document also includes realistic code segments and their expected output, challenging students to engage with both syntax and logic. It is a perfect blend of concept review and applied problem-solving, helping learners strengthen both theoretical and practical understanding.
Ideal for:
University students in CS101 and Java Fundamentals
Certification candidates preparing for foundational Java exams
Bootcamp participants and self-taught developers
Tutors compiling assessment material or practice exams
Keywords:
Java methods, Java exam questions, Java file I/O, Java method parameters, Java boolean logic, Java operators, Java loops, Java control flow, Java classes, Java memory reference, Java string handling, CS101 Java, Java ternary, Java output tracing, Java syntax errors
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Java Exam 2025/2026 Exam Questions
and Correct Answers | New Update
A method - 🧠ANSWER ✔✔may have zero or more parameters
When an object, such as a String, is passed as an argument it is -
🧠ANSWER ✔✔actually a reference to the object that is passed
In the method header the static method modifier means the method is
available to code outside the class. - 🧠ANSWER ✔✔False
Which of the following is not a part of a method call? - 🧠ANSWER ✔✔return
type
When an argument is passed to a method ________. - 🧠ANSWER ✔✔its
value is copied into the method's parameter variable
To create a method, you must write its ________. - 🧠ANSWER
✔✔Definition
,Values that are sent into a method are called ________. - 🧠ANSWER
✔✔arguments
A ________ type of method performs a task and then terminates. -
🧠ANSWER ✔✔void
In the header, the method name is always followed by ________. -
🧠ANSWER ✔✔parentheses
A parameter variable's scope is ________. - 🧠ANSWER ✔✔the method in
which the parameter is declared
A value-returning method can return a reference to a non-primitive type. -
🧠ANSWER ✔✔True
You must have a return statement in a value-returning method. -
🧠ANSWER ✔✔True
In a @return tag statement the description ________. - 🧠ANSWER
✔✔describes the return value
Constants, variables, and the values of expressions may be passed as
arguments to a method. - 🧠ANSWER ✔✔True
, In a general sense, a method is ________. - 🧠ANSWER ✔✔a collection of
statements that perform a specific task
In the following code, System.out.println(num) is an example of ________.
double num = 5.4;
System.out.println(num);
num = 0.0; - 🧠ANSWER ✔✔a void method
When you pass an argument to a method you should be sure that the
argument's type is compatible with ________. - 🧠ANSWER ✔✔the
parameter variable's data type
Given the following method, which of these method calls is valid? public
static void showProduct (double num1, int num2)
{
double product;
product = num1 * num2;
System.out.println("The product is " + product); } - 🧠ANSWER
✔✔showProduct(3.3, 55);
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