Java Interview Ultimate Guide: Top Java Interview Questions

Java Interview Questions: Java Basics, JVM, Strings, OOP, Multithreading, Collections, and Data Structures

What you'll learn

Practical insights into Java interview questions

Comprehensive understanding of Java basics, including JVM, JDK, and JRE.

Mastery of Object-Oriented Programming (OOP) in Java, covering method overloading, inheritance, and more.

In-depth knowledge of Java Generics and effective usage in applications.

Thorough understanding of Java Strings and their underlying mechanics, such as immutability and the String pool.

Advanced proficiency in Java Collections, including HashMap, Iterator, and differences between collections.

Detailed concepts in Java Multithreading and Concurrency, including synchronization, deadlocks, and the volatile keyword.

Effective handling of Java Exceptions, with a breakdown of checked and unchecked exceptions.

Essential Java Data Structures knowledge for problem-solving in interview scenarios.

Requirements

Basic knowledge of programming fundamentals.

Description

Do you have a Java interview and want to brush up your Java knowledge and skills ? This course is the right choice for you to prepare for Java coding interviews with confidence! In this course we will dive deep into essential and frequent Java interview questions covered in technical interviews, from basic Java fundamentals to advanced concepts in data structures, OOP principles, and multithreading. What will students learn in your course?Comprehensive understanding of Java basics, including JVM, JDK, and JRE.Mastery of Object-Oriented Programming (OOP) in Java, covering method overloading, inheritance, and more.In-depth knowledge of Java Generics and effective usage in applications.Thorough understanding of Java Strings and their underlying mechanics, such as immutability and the String pool.Advanced proficiency in Java Collections, including HashMap, Iterator, and differences between collections.Detailed concepts in Java Multithreading and Concurrency, including synchronization, deadlocks, and the volatile keyword.Effective handling of Java Exceptions, with a breakdown of checked and unchecked exceptions.Essential Java Data Structures knowledge for problem-solving in interview scenarios.Practical insights into coding interview questions, focusing on Java-based solutions..What are the requirements or prerequisites for taking your course?Basic knowledge of programming fundamentals.Familiarity with core Java syntax is helpful but not mandatory, as foundational topics will be covered.No prior interview experience is required; this course is designed for students preparing for Java coding interviews of all levels. Who is this course for?Java developers preparing for technical interviews.Junior and mid-level developers looking to strengthen their core Java knowledge and improve interview performance.Computer science students or career changers aiming to build a solid foundation in Java.Anyone wanting a comprehensive Java refresher to tackle technical interviews with confidence.The course covers the following topics:Java BasicsWhat is Java?Java vs C++What is JVM?What is the Difference Between JDK, JRE, and JVM?How Many Types of Memory Areas are Allocated by JVM?What are the Advantages of Packages in Java?Does Java Pass Variables by Value or Reference?What is Method Overloading and Method Overriding?What is the Difference Between == and .equals() in Java?How Does Java Handle Multiple Inheritance?What is the Diamond Problem?What is Constructor Chaining in Java?Default Constructors in JavaWhat is an Abstract Class?What is a Final Class?What is an Interface in Java?What are Generics in Java?What are Generic Methods?What are Wildcards?Why are Strings Immutable in Java?What is the String Pool?What is the Difference Between StringBuffer and StringBuilder?Explain substring() Method. Does it Create a New String?What is the Collections Framework in Java?What is the Difference Between Iterator and Iterable Interfaces?What is the Difference Between Hashtable and HashMap?What is the Difference Between a Process and a Thread?What is Synchronized in Java?What is a Deadlock?What is Starvation?What is a Thread Safe Class?Mutex vs SemaphoreExplain the "volatile" Keyword in JavaWhat is the wait() method in Java?What is the notify() method in Java?What is an Exception?What Does Throwing an Exception Mean?What are Checked Exceptions?What are Unchecked Exceptions?What are Runtime Exceptions?How to Handle Multiple Exceptions in the Same Catch Block?Stack - Valid ParenthesesSet - School DatabasePriority Queue - Kth Largest ElementHash Map - Web Page CacheSo what are you waiting for ? do you want to ace your Java coding interview ? enroll in the course now and prepare for acing your Java interview in the quickest way possible with 30 days money back guarantee. See you in the course! :)

Overview

Section 1: Java Basics

Lecture 1 Resources: Section Material

Lecture 2 What is Java ?

Lecture 3 Java vs C++

Lecture 4 What is JVM ?

Lecture 5 What is the Difference Between JDK, JRE, and JVM?

Lecture 6 How Many Types of Memory Areas are Allocated by JVM?

Lecture 7 What are the Advantages of Packages in Java?

Lecture 8 Does Java Pass Variables by Value or Reference ?

Section 2: Java OOP

Lecture 9 Resources: Section Material

Lecture 10 What is Method Overloading and Method Overriding?

Lecture 11 What is the Difference Between == and .equals() in Java?

Lecture 12 How Does Java Handle Multiple Inheritance?

Lecture 13 What is the Diamond Problem ?

Lecture 14 What is Constructor Chaining in Java ?

Lecture 15 Default Constructors in Java

Lecture 16 What is an Abstract Class ?

Lecture 17 What is a Final Class?

Lecture 18 What is an Interface in Java?

Section 3: Java Generics

Lecture 19 Resources: Section Material

Lecture 20 What are Generics in Java ?

Lecture 21 What are Generic Methods ?

Lecture 22 What are Wildcards ?

Section 4: Java Strings

Lecture 23 Resources: Section Material

Lecture 24 Why are Strings Immutable in Java?

Lecture 25 What is the String Pool?

Lecture 26 What is the Difference Between StringBuffer, and a StringBuilder?

Lecture 27 Explain substring() Method. Does it Create a New String?

Section 5: Java Collections

Lecture 28 Resources: Section Material

Lecture 29 What is the Collections Framework in Java ?

Lecture 30 What is the Difference Between Iterator and Iterable Interfaces?

Lecture 31 What is the Difference Between Hashtable and HashMap?

Section 6: Java Threads

Lecture 32 Resources: Section Material

Lecture 33 What is the Difference Between a Process and a Thread ?

Lecture 34 What is Synchronized in Java?

Lecture 35 What is a Deadlock?

Lecture 36 What is Starvation?

Lecture 37 What is a Thread Safe Class ?

Lecture 38 Mutex vs Semaphore

Lecture 39 Explain the "volatile" Keyword in Java

Lecture 40 What is the wait() method in Java ?

Lecture 41 What is the notify() method in Java ?

Section 7: Java Exceptions

Lecture 42 Resources: Section Material

Lecture 43 What is an Exception ?

Lecture 44 What Does Throwing an Exception Mean?

Lecture 45 What are Checked Exceptions?

Lecture 46 What are Unchecked Exceptions?

Lecture 47 What are Runtime Exceptions?

Lecture 48 How to Handle Multiple Exceptions in the Same Catch Block?

Section 8: Java Data Structures

Lecture 49 Stack - Valid Parentheses

Lecture 50 Set - School Database

Lecture 51 Priority Queue - Kth Largest Element

Lecture 52 Hash Map - Web Page Cache

Section 9: Final Words

Lecture 53 Bonus Lecture

Java developers preparing for technical interviews.,Junior and mid-level developers looking to strengthen their core Java knowledge and improve interview performance.,Computer science students or career changers aiming to build a solid foundation in Java.,Anyone wanting a comprehensive Java refresher to tackle technical interviews with confidence.