Java for Hiring Interviews - OryNet IT Services & Consulting

UNIT 1: Understanding the Java Hiring Process
Objective: Learn how companies evaluate Java candidates.

Types of Java interviews : Campus placements
Service-based companies
Product-based companies
Startups
Interview rounds: Aptitude
Coding test
Technical interview
Managerial & HR
Evaluation criteria used by interviewers
Common mistakes made by candidates
How to prepare strategically

UNIT 2: Core Java Interview Fundamentals
Objective: Master frequently asked Core Java questions.

UNIT 3: Object-Oriented Programming – Interview Depth
Objective: Explain OOP with real examples.

UNIT 4: Exception Handling & Debugging Questions
Objective: Handle tricky interview scenarios.

UNIT 5: Java Collections – Interview Mastery
Objective: Tackle high-frequency collections questions.

UNIT 6: Java Coding Problems & Algorithms
Objective: Solve coding challenges effectively.

UNIT 7: Multithreading & Concurrency – Interview View
Objective: Answer advanced Java questions confidently.

UNIT 8: JVM, Memory & Performance Questions
Objective: Handle advanced conceptual interviews.

UNIT 9: JDBC, SQL & Backend Interview Questions
Objective: Prepare for backend Java roles.

UNIT 10: Java 8+ Features (Must-Know)
Objective: Prepare for modern Java interviews.

UNIT 11: Project Explanation & System Design
Objective: Learn how to explain projects effectively.

UNIT 12: HR & Behavioral Interview Preparation
Objective: Clear HR and managerial rounds.

UNIT 13: Mock Interviews & Assessment
Objective: Simulate real interview conditions.

UNIT 14: Final Placement Readiness Evaluation
Objective: Validate readiness for hiring.

Course Content

UNIT 1: Understanding the Java Hiring Process Objective: Learn how companies evaluate Java candidates.

Types of Java interviews : Campus placements

Service-based companies

Product-based companies

Startups

Interview rounds: Aptitude

Coding test

Technical interview

Managerial & HR

Evaluation criteria used by interviewers

Common mistakes made by candidates

How to prepare strategically

UNIT 2: Core Java Interview Fundamentals Objective: Master frequently asked Core Java questions.

Java features and advantages

JDK vs JRE vs JVM (interview explanation)

Java program execution flow

Data types & memory allocation

Operators and control flow

Arrays vs Collections

String, StringBuilder, StringBuffer (comparisons)

Immutability concept

UNIT 3: Object-Oriented Programming – Interview Depth Objective: Explain OOP with real examples.

OOP principles with examples

Encapsulation vs abstraction

Inheritance vs composition

Polymorphism (compile-time & runtime)

Abstract classes vs interfaces

this and super keywords

Method overloading vs overriding

UNIT 4: Exception Handling & Debugging Questions Objective: Handle tricky interview scenarios.

Exception hierarchy

Checked vs unchecked exceptions

try-catch-finally flow

throw vs throws

Custom exceptions

Common exception-based puzzles

Debugging runtime errors

UNIT 5: Java Collections – Interview Mastery Objective: Tackle high-frequency collections questions.

Collection hierarchy

List vs Set vs Map

ArrayList vs LinkedList

HashMap vs TreeMap vs Hashtable

Hashing & collision handling

Comparable vs Comparator

Fail-fast vs fail-safe iterators

Performance and complexity

UNIT 6: Java Coding Problems & Algorithms Objective: Solve coding challenges effectively.

String-based problems

Array manipulation problems

Searching & sorting problems

Number-based logic problems

Pattern and recursion questions

Time & space complexity basics

UNIT 7: Multithreading & Concurrency – Interview View Objective: Answer advanced Java questions confidently.

Thread lifecycle

Runnable vs Thread

Synchronization

Deadlock and race conditions

ExecutorService

Callable & Future

Concurrent collections

UNIT 8: JVM, Memory & Performance Questions Objective: Handle advanced conceptual interviews.

JVM architecture

Stack vs heap

Garbage collection

finalize() vs AutoCloseable

Memory leaks

Performance tuning basics

UNIT 9: JDBC, SQL & Backend Interview Questions Objective: Prepare for backend Java roles.

JDBC architecture

Driver types

Statement vs PreparedStatement

Transactions & ACID

Connection pooling

SQL interview questions (joins, indexes)

UNIT 10: Java 8+ Features (Must-Know) Objective: Prepare for modern Java interviews.

Lambda expressions

Functional interfaces

Stream API

UNIT 1: Understanding the Java Hiring Process
Objective: Learn how companies evaluate Java candidates.

UNIT 2: Core Java Interview Fundamentals
Objective: Master frequently asked Core Java questions.

UNIT 3: Object-Oriented Programming – Interview Depth
Objective: Explain OOP with real examples.

UNIT 4: Exception Handling & Debugging Questions
Objective: Handle tricky interview scenarios.

UNIT 5: Java Collections – Interview Mastery
Objective: Tackle high-frequency collections questions.

UNIT 6: Java Coding Problems & Algorithms
Objective: Solve coding challenges effectively.

UNIT 7: Multithreading & Concurrency – Interview View
Objective: Answer advanced Java questions confidently.

UNIT 8: JVM, Memory & Performance Questions
Objective: Handle advanced conceptual interviews.

UNIT 9: JDBC, SQL & Backend Interview Questions
Objective: Prepare for backend Java roles.

UNIT 10: Java 8+ Features (Must-Know)
Objective: Prepare for modern Java interviews.

UNIT 11: Project Explanation & System Design
Objective: Learn how to explain projects effectively.

UNIT 12: HR & Behavioral Interview Preparation
Objective: Clear HR and managerial rounds.

UNIT 13: Mock Interviews & Assessment
Objective: Simulate real interview conditions.

UNIT 14: Final Placement Readiness Evaluation
Objective: Validate readiness for hiring.