This document contains over 100 multiple-choice and code-based questions with correct answers from the Intro to Java Programming (CS101) exam for the 2025/2026 academic year. It is designed for first-year students in Computer Science, Software Engineering, and Information Technology, and is highly suited for final exam preparation, midterm review, and Java certification foundations (e.g., OCAJP).
The questions cover a wide range of introductory to intermediate-level Java topics, focusing on both theoretical knowledge and logic-based code analysis. Each question is paired with a correct and clearly marked answer, including many output-prediction scenarios, variable manipulation, object reference behavior, and error identification.
Topics covered include:
Java Basics: data types, operators, reserved words, naming rules
Syntax and Compilation: valid/invalid syntax, output tracing, compiler errors
Control Structures: if-else, switch, loop logic (for, while)
OOP Concepts: object creation, constructors, classes, interfaces
Access Modifiers and Encapsulation: public/private variables and methods
Arrays: single-dimensional and multi-dimensional array declaration and usage
Method Behavior: method calls, overloading, parameters, return types
Math and Logical Operators: precedence, evaluation, short-circuiting
String and Wrapper Classes: concatenation, method chaining, casting
Common Error Types: compile-time, runtime, logical, semantic
Output Prediction: analysis of full code segments with expected output
Boolean Logic and Ternary Operator: decision-making expressions
GUI Basics and Layouts: brief coverage of FlowLayout in swing
This document is ideal for:
CS101 students preparing for semester or final Java exams
Bootcamp learners reinforcing exam logic and syntax rules
Students revising for Java-based quizzes, lab tasks, and certifications
Tutors building sample assessments or classroom revision material
The structure of the content is well-suited for self-study, test simulation, or quick-reference review, ensuring a complete grasp of fundamental Java programming concepts with direct application to academic exams.
Keywords:
Java exam questions, Java syntax, Java loops, Java output, Java operators, Java constructors, Java arrays, Java classes, CS101 Java, Java multiple choice, Java method logic, Java error types, Java switch statement, Java ternary operator, Java layout manager
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Java Exam 2025/2026 Exam Questions
with 100% Correct Answers | Latest
Update
False - 🧠ANSWER ✔✔Java is interpreted, but not compiled
public static void - 🧠ANSWER ✔✔The words required at the start of every
"main" method definition are
book-mark - 🧠ANSWER ✔✔Which of the following is an INVALID identifier?
a) funny$ b) book-mark c) num_2 d) num2 e) _num
4.0 8.5 - 🧠ANSWER ✔✔int n1, n2; double d1, d2;
4. What is the output of the following code segment?
n1 = 17;
d1 = n1/4;
,d2 = n1/2.0;
System.out.println (d1 + " " + d2);
-2 - 🧠ANSWER ✔✔What is the output of the following code segment?
n1 = 3 - % 5 + -3;
System.out.println (n1);
12.5 - 🧠ANSWER ✔✔What is the output of the following code segment?
d1 = 3 * 5 - 1.5 * ;
System.out.println (d1);
byte short int long - 🧠ANSWER ✔✔Which of the following represents the
correct increasing range of values for integer types, from left to right? a)
byte long short int
b) int byte short long
c) byte short int long
d) short byte long int e) none of the above
8 - 🧠ANSWER ✔✔One byte has ________ bits.
, Sun Microsystems - 🧠ANSWER ✔✔Java was developed by
____________.
System.out.println ("Welcome to Java"); - 🧠ANSWER ✔✔Which of the
following statements is correct to display Welcome to Java on the console?
a) System.out.println ('Welcome to Java');
b) System.out.println ("Welcome to Java");
c) system.println ("Welcome to Java");
d) System.out.print ('Welcome to Java'); e) system.out.print ("Welcome to
Java");
Test.java - 🧠ANSWER ✔✔Suppose you define a Java class as follows:
public class Test {
}
In order to compile this program, the source code should be stored in a file
named
-- comments - 🧠ANSWER ✔✔Which of the following lines is not a Java
comment? a) /** comments */
b) // comments
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