Java
24 articles in this topic
Interface vs Abstract Class in Java: Differences, Default Methods and Exam Questions
Replace the old textbook rule with a current comparison, then solve the two-default-method conflict that appears in Java output and compilation questions.
Exception Handling in Java: Checked vs Unchecked, finally Traps and Output Questions
Replace guesswork with precise Java exception rules. Trace two classic finally outputs, order catches correctly, and preserve causes when wrapping failures.
Arrays and Strings in Java for Coding Rounds: The Core Patterns That Keep Coming Up
Stop treating every coding-round question as a new puzzle. Learn four reusable array and string patterns, then trace a sliding window on abcabcbb step by step.
Java Interview Questions for Freshers: How to Answer OOPs, Strings, Collections and Exceptions
Prepare the Java questions freshers actually face, then learn to explain each output instead of stopping at a memorised definition.
Pattern Printing Programs in C, Java and Python: One Method for Every Star and Number Pyramid
Stop memorising separate pattern programs. Learn how two row-wise decisions generate star pyramids, number triangles and their common variations in C, Java and Python.
Java Coding Interview Questions: Programs Asked in Service-Company Drives
Prepare the short Java programs that recur in fresher drives. Learn the core string, array, number and collections patterns, then trace an O(n) Two-Sum solution.
OOPs Concepts in Java: Inheritance, Polymorphism, Abstraction and Encapsulation with Worked Interview Questions
Turn the four OOP pillars into predictable Java behaviour. Trace superclass references, subclass objects, overridden methods, hidden fields and common follow-ups.
JavaScript Interview Questions for Freshers 2026: Core Concepts, the DOM and ES6+
Prepare for JavaScript fresher interviews by reasoning through scope, closures, this, async execution, ES6+ and DOM behaviour. Includes the classic loop-closure trace.
Java vs Python for Placements in India 2026: Test Formats, Company Preferences and a Decision Guide
Choose one placement language by test access, DSA fluency and the interview story you want to tell. Then learn just enough of the second language to stay flexible.
Java 8 to Java 21 Features Interviewers Actually Ask: Streams, Records, Sealed Classes and Virtual Threads
Learn the modern Java features that lead to real interview follow-ups, with small code examples, version boundaries and the limits a strong answer should mention.
Classic Programs in C, Java and Python
Learn six placement-programming methods through one clean implementation each. The focus is logic, edge cases, complexity and porting, not memorised code.
String Handling in Java: String Pool, Immutability and Fresher-Test Questions
Where Java strings actually live, why they never change, and how == vs equals() decides service-company output questions. A String pool and heap diagram, a step-by-step worked trace, StringBuilder performance, and four fresher-test output questions with worked answers.