Java Interview Masterclass: Top 350 Questions (PDF)(2024)

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Happy Rawat

9:57:12

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1. Introduction

1.1 Java-Code.zip

1. Course Structure and Introduction (PDF books attached in resources).mp4

02:55

Files.zip

2. Java-Basics

1. Java-Basics Introduction.mp4

00:19

2. Q. What is Java.mp4

01:15

3. Q. What are JDK, JRE & JVM How a Java program compiled or executed.mp4

04:40

4. Q. What is compile-time and run-time in Java.mp4

01:11

5. Q. What are the main features and advantages of Java.mp4

02:36

6. Q. How Java is platform independent Why convert java code to bytecode.mp4

01:32

7. Q. How to setup VS Code for Java (not an interview question).mp4

06:53

8. What is the role of public, static and void in it.mp4

04:59

9. Q. What is Java Bytecode What is high-level, low-level code.mp4

01:20

3. Variables & Data types

1. Variables & Data types.mp4

00:36

2. Q. What are variables & data types What are the types of data types.mp4

02:26

3. Q. What are primitive data types.mp4

02:27

4. Q. What are reference non-primitive data types.mp4

02:15

5. Q. What are the differences between primitive and reference data types.mp4

03:03

4. Operators

1. Operators Introduction.mp4

00:30

2. Q. What are Operators What the types of operators in Java.mp4

01:08

3. Q. What are Arithmetic Operators.mp4

00:47

4. Q. What are Assignment Operators.mp4

01:28

5. Q. What are Comparison Operators When to use them.mp4

03:09

6. Q. What are Logical Operators When to use them.mp4

03:39

7. Q. What are Unary Operators.mp4

01:38

8. Q. What are Ternary (Conditional) Operators.mp4

02:57

9. Q. What is instanceOf Operator.mp4

01:46

5. Control statements - Basics

1. Control statements - Basics - Introduction.mp4

00:25

2. Q. What are control statements in Java.mp4

03:27

3. Q. What are conditional statements What is if-elseif-else condition.mp4

03:05

4. Q. What are looping statements in Java What is while loop.mp4

03:09

5. Q. What is the difference between while loop and for loop.mp4

01:48

6. Q. What is the difference between break and continue statement.mp4

03:12

6. Control statements - Advanced

1. Control statements - Advanced - Introduction.mp4

00:32

2. Q. What is the difference between while loop and do-while loop.mp4

02:24

3. Q. How to decide which loop(for, while, do-while) to use in real applications.mp4

01:53

4. Q. What is the difference btw for loop and for-each loop When to use for-each l.mp4

03:05

5. Q. What is switch statement.mp4

04:08

6. Q. When to use which type of conditional statements in real applications.mp4

05:20

7. Mock Interview Question and Answers - 1

1. Java-Basics, Variables & Data types, Operators, Control statements.mp4

00:44

2. Java-Basics, Variables & Data types, Operators, Control statements.mp4

05:11

8. String & StringBuilder

1. String & StringBuilder - Introduction.mp4

00:43

2. Q. What is StringBuilder Difference between String and StringBuilder.mp4

03:24

3. Q. When to use String and when to use StringBuilder in real applications.mp4

01:26

4. Q. What is the concept of string pool in Java.mp4

02:26

5. Q. Difference between == and equals() method for comparing strings.mp4

01:47

6. Q. What are the important methods of String class.mp4

03:44

9. Arrays

1. Arrays.mp4

00:30

2. Q. What is an Array Why we need array in real applications.mp4

02:33

3. Q. How to declare and initialize an array How to access array elements.mp4

02:09

4. Q. What is the length property of an array.mp4

00:45

5. Q. How do you iterate over an array in Java.mp4

01:26

10. OOPS - Classes, Objects & Package

1. OOPS - Classes, Objects & Package - Introduction.mp4

00:26

2. Q. What is OOPS What are the main concepts of OOPS.mp4

01:40

3. Q. What are classes and objects Why use them in applications.mp4

04:35

4. Q. How to implement classes and objects in Java.mp4

04:58

5. Q. What are the members of class.mp4

01:20

6. Q. What is the role and benefit of package in Java.mp4

02:56

11. OOPS - Access Specifiers, Getter-Setter & this keyword

1. OOPS - Access Specifiers, Getter-Setter & this keyword.mp4

00:46

2. Q. What are access specifiers What are public and private specifiers.mp4

03:13

3. Q. What is the role of default access specifier Difference btw public, private.mp4

03:39

4. Q. What is the role of this keyword in java When to use it.mp4

05:04

5. Q. Why to use same names for class fields and parameter name in Setter method.mp4

00:56

6. Q. What are getter and setter methods.mp4

03:23

7. Q. What are the advantages of getter and setter methods.mp4

03:38

8. Q. What are the 4 principles pillars of OOPS.mp4

00:39

12. Mock Interview Question and Answers - 2

1. OOPS - Classes, Objects, Access Specifiers, Getter-Setter & this keyword.mp4

00:27

2. OOPS - Classes, Objects, Access Specifiers, Getter-Setter & this keyword.mp4

05:15

13. OOPS - Inheritance

1. OOPS - Inheritance - Introduction.mp4

00:35

2. Q. What is inheritance and when to use inheritance in real applications.mp4

04:05

3. Q. How to implement inheritance in Java.mp4

03:25

4. Q. What are the different types of Inheritance When to use what.mp4

03:03

5. Q. What is multiple inheritance Does Java support it.mp4

01:10

6. Q. Why Java does not support multiple inheritance of classes.mp4

02:14

7. Q. What is the alternative of multiple inheritance in Java.mp4

02:34

8. Q. How to prevent a class from being inherited.mp4

00:44

14. OOPS - Polymorphism

1. OOPS - Polymorphism - Introduction.mp4

00:28

2. Q. What is polymorphism.mp4

02:03

3. Q. What are the types of polymorphism.mp4

01:59

4. Q. What is Method Overloading How to implement it and when to use it.mp4

02:25

5. Q. Why do we call method overloading as a type of compile-time or early binding.mp4

02:43

6. Q. In how many ways can a method be overloaded.mp4

01:12

7. Q. If two same methods have different return type, then are methods are overload.mp4

00:53

8. Q. What is Method Overriding.mp4

03:02

9. Q. Why to use method overriding Why dont we have different name methods.mp4

01:42

10. Q. How to implement method overriding.mp4

02:46

11. Q. Why we call method overriding as a run-time or late binding.mp4

01:58

12. Q. What are the 5 differences between Overloading and Overriding.mp4

03:41

13. Q. What are Annotations in Java.mp4

01:48

15. OOPS - Encapsulation & Abstraction

1. OOPS - Encapsulation & Abstraction - Introduction.mp4

00:27

2. Q. What is Encapsulation.mp4

01:53

3. Q. How to achieve Encapsulation in Java.mp4

02:57

4. Q. What are the advantages of Encapsulation in Java.mp4

01:48

5. Q. What is Abstraction How to implement abstraction.mp4

02:44

6. Q. What is the difference between abstraction and encapsulation.mp4

02:05

16. Mock Interview Question and Answers - 3

1. OOPS - Inheritance, Polymorphism, Encapsulation & Abstraction.mp4

00:30

2. OOPS - Inheritance, Polymorphism, Encapsulation & Abstraction.mp4

07:44

17. Abstract class & Interface

1. Abstract class & Interface - Introduction.mp4

00:43

2. Q. What is abstract class In Java How to implement it.mp4

03:35

3. Q. When to use abstract class in real applications.mp4

05:21

4. Q. What are interfaces in Java How to implement it.mp4

03:05

5. Q. When to use interfaces in real applications.mp4

04:24

6. Q. Differences between an Abstract class & an Interface .mp4

03:03

7. Q. What are default methods When to use default methods.mp4

04:11

8. Q. Can you create an instance of an Abstract class or an Interface.mp4

00:25

9. Q. Do abstract class can have Constructors What is the use of that constructor.mp4

03:53

10. Q. Do Interface can have a constructor.mp4

00:29

11. Q. When to use Interface and when Abstract class in real applications.mp4

02:19

12. Q. How to achieve abstraction Abstraction vs Abstract class .mp4

02:05

18. Constructors

1. Constructors - Introduction.mp4

00:46

2. Q. What is Constructor in Java.mp4

02:18

3. Q. What are the types of constructors What is Default constructor.mp4

01:37

4. Q. What is Parameterized constructor When to use it in real applications.mp4

03:34

5. Q. What is constructor overloading When to use it in real applications.mp4

03:47

6. Q. What is constructor chaining.mp4

03:02

7. Q. What is copy constructor.mp4

03:23

8. Q. When to use copy constructor in real applications.mp4

01:32

9. Q. Can a constructor have a return type.mp4

00:20

10. Q. What will happen if no constructor is defined inside the class.mp4

00:26

11. Q. What is the role of super keyword.mp4

02:17

19. Mock Interview Question and Answers - 4

1. Abstract class & Interface, Constructors.mp4

00:21

2. Abstract class & Interface, Constructors.mp4

03:57

20. Exception Handling - Basics

1. Exception Handling - Basics - Introduction.mp4

00:28

2. Q. What is Exception Handling How to implement it in Java.mp4

03:12

3. Q. What is the role of finally in exception handling.mp4

01:47

4. Q. When to use finally in real applications.mp4

02:49

5. Q. Can we have multiple catch blocks .mp4

02:42

6. Q. What is catch-all block Is it a good practice in real applications.mp4

01:49

7. Q. Can we execute all catch blocks at one time.mp4

00:42

21. Exception Handling - Advanced

1. Exception Handling - Advanced - Introduction.mp4

00:29

2. Q. What is the role of throw keyword in exception handling When to use it.mp4

04:15

3. Q. What is the role of throws keyword in exception handling.mp4

03:38

4. Q. What are the differences between throw and throws keywords.mp4

03:20

5. Q. What are the types of exceptions in Java.mp4

01:23

6. Q. What are checked and unchecked exceptions.mp4

02:51

22. Mock Interview Question and Answers - 5

1. Exception Handling.mp4

00:13

2. Exception Handling.mp4

05:10

23. Collections - Basics

1. Collections - Basics - Introduction.mp4

00:44

2. Q. What are collections and what is their use in Java.mp4

01:44

3. Q. What are the types of collections in Java.mp4

03:22

4. Q. What are Iterable & Collection interfaces.mp4

02:27

5. Q. What are List, Queue & Set collections What is the difference between them.mp4

03:27

6. Q. What is Arraylist How to implement it and when to use it.mp4

03:52

7. Q. What are the differences between Array and Arraylist.mp4

03:53

8. Q. What is HashSet What are the differences btw ArrayList(List) & HashSet(Set).mp4

03:19

9. Q. What is Map In Java Which classes implements Map interface.mp4

01:56

10. Q. What is HashMap In Java How to implement it and when to use it.mp4

02:52

11. Q. What are the differences btw HashSet(Set) and HashMap(Map).mp4

02:25

24. Collections - Advanced

1. Collections - Advanced - Introduction.mp4

00:27

2. Q. What is LinkedList in Java What are Singly and Doubly linked list.mp4

06:13

3. Q. How to implement LinkedList Difference between Arraylist & LinkedList.mp4

03:56

4. Q. What are Collections.mp4

03:23

5. Q. What is TreeSet in Java What is the difference between HashSet and TreeSet.mp4

03:12

6. Q. What is the difference between HashMap and HashTable.mp4

03:42

7. Q. What are the advantages of using collections.mp4

02:05

25. Mock Interview Question and Answers - 6

1. Collections.mp4

00:26

2. Collections.mp4

03:56

26. Multithreading - Overview

1. Multithreading - Overview - Introduction.mp4

00:34

2. Q. What is Process and Thread What is the difference between them.mp4

03:16

3. Q. Explain Multithreading What is the advantage of it.mp4

01:59

4. Q. What is Main Thread & Daemon Thread in Java.mp4

02:44

27. Multithreading - Implementation

1. Multithreading - Implementation.mp4

00:38

2. Q. In how many ways we can implement multithreading in Java.mp4

01:15

3. Q. How to implement multithreading using Thread class.mp4

03:46

4. Q. How to implement multithreading using Runnable Interface.mp4

03:59

5. Q. What is the differences between Thread class & Runnable interface.mp4

03:00

6. Q. What are some important methods of Thread class.mp4

03:49

28. Mock Interview Question and Answers - 7

1. Multithreading.mp4

00:16

2. Multithreading.mp4

04:25

29. Generics - Basics

1. Generics - Basics - Introduction.mp4

00:34

2. Q. What is the role of Generics in Java.mp4

03:11

3. Q. What is a Generic method How to implement Generic method.mp4

05:08

4. Q. What is a Generic class How to implement Generic class.mp4

03:03

5. Q. What are type parameters and type arguments What is T in Generic class.mp4

01:35

6. Q. When to use Generic method and when to use Generic class in Java.mp4

00:54

30. Generics - Advanced

1. Generics - Advanced - Introduction.mp4

00:19

2. Q. What are bounded type parameters in generics.mp4

02:34

3. Q. Can primitive types be used as type arguments in generics.mp4

01:02

4. Q. How to use Generics with Collections.mp4

01:51

5. Q. What is Type Safety How generics provide type safety.mp4

02:22

6. Q. What is Type casting How generics eliminates type casting.mp4

03:14

7. Q. What are the advantages of using Generics.mp4

01:27

31. Mock Interview Question and Answers - 8

1. Generics.mp4

00:14

2. Generics.mp4

02:08

32. Lambda expression

1. Lambda expression - Introduction.mp4

00:18

2. Q. What is lambda expression and lambda operator.mp4

04:02

3. Q. What is the difference between normal interface and functional interface.mp4

01:38

4. Q. How to use lambda expression to implement functional interfaces.mp4

04:52

5. Q. Can we use lambda expression for non-functional interfaces.mp4

00:42

33. Types of Classes - Inner class & Final class

1. Types of Classes - Inner class & Final class - Introduction.mp4

00:24

2. Q. What are the types of classes in Java.mp4

00:51

3. Q. What are Inner Classes (Nested Classes).mp4

02:23

4. Q. What is Final class in Java.mp4

01:41

5. Q. What is Final method in Java.mp4

01:19

6. Q. What is the role of final keyword.mp4

00:56

34. Types of Classes - Static class & Enum

1. Types of Classes - Static class & Enum.mp4

00:16

2. Q. What is the role of Static method.mp4

01:57

3. Q. When to use static methods in real applications.mp4

02:18

4. Q. What is Static nested class.mp4

00:58

5. Q. What is the role of static keyword in Java.mp4

01:43

6. Q. What is Enum What is the use of it in real applications.mp4

03:01

7. Q. How to use and implement Enums.mp4

02:22

35. Mock Interview Question and Answers - 9

1. Types of Classes.mp4

00:21

2. Types of Classes.mp4

09:07

36. Coding Question and Answers

1. Array Coding Problems.mp4

01:06

2. Q. What are the must-know pre-requisites for solving basic coding problems.mp4

02:02

3. Q. What is the common approach for solving coding problems.mp4

04:25

4. Q. Write a function to calculate the sum of all elements in an array..mp4

03:56

5. Q. Write a function to calculate the average of an array of numbers..mp4

01:38

6. Q. Write a function to find the smallest number in an array..mp4

04:21

7. Q. Write a function to find the largest number in an array..mp4

02:04

8. Q. Write a function to find the second largest number in an array..mp4

07:57

37. Array Coding Problems Using Functions

1. Array Coding Problems Using Functions.mp4

00:45

2. Q. What are the top 5 important array functions used in coding problems.mp4

05:23

3. Q. Write a function to check whether two arrays are same or not.mp4

01:02

4. Q. Function to check if a given array is sorted in ascending order or Not.mp4

03:13

5. Q. Write a function to merge two arrays into a single sorted array..mp4

04:08

6. Q. Write a function to remove a specific element from an array..mp4

04:48

38. String Coding Problems

1. String Coding Problems.mp4

00:24

2. Q. Write a function that counts the number of characters in a string.mp4

02:18

3. Q. How to iterate a string.mp4

01:46

4. Q. Write a function that returns the reverse of a string.mp4

04:15

5. Q. Write a function that checks whether a given string is a palindrome or not.mp4

02:45

39. String Coding Problems Using Functions

1. String Coding Problems Using Functions.mp4

00:33

2. Q. What are the important methods of String class.mp4

03:44

3. Q. What are some more important methods of String class.mp4

04:18

4. Q. Write a function that returns the longest word in the sentence..mp4

03:43

5. Q. Write a function to remove all whitespace characters from a string..mp4

02:20

6. Q. Write a function that counts the number of vowels in a string.mp4

03:37

7. Q. Write a function that checks whether two strings are anagrams or not.mp4

02:41

40. Number Coding Problems

1. Number Coding Problems.mp4

00:38

2. Q. Write a function to calculate the factorial of a number..mp4

02:35

3. Q. What is the difference between ++i and i++.mp4

01:23

4. Q. Write a function that checks whether a number is prime or not.mp4

03:46

5. Q. How to swap two numbers in Java.mp4

02:44

6. Q. Write a function to calculate the GCD for two numbers..mp4

03:31

7. Q. Write a function to sum the digits of a number..mp4

03:56

8. Q. Write a function to calculate the Fibonacci sequence up to a given number..mp4

04:06

41. Coding Algorithms

1. Coding Algorithms.mp4

00:34

2. Q. Write a function to sort an array of numbers in ascending order(Bubble Sort)..mp4

08:55

3. Q. Write a function to search an element in any array(Binary Search).mp4

09:16

4. End.mp4

00:50

Description

Topics - Java Coding/ OOPS/ Exception Handling/ Collections/ Multithreading/ Generics/ Spring Boot/ MVC/ REST Services

What You'll Learn?

350 Java Interview Questions and Answers
Core Java, Java Coding Questions, OOPS Concepts, Exception Handling, Collections, Multithreading, Generics, Spring, Spring Boot, Spring MVC, REST WebServices
Java Interview Preparation and Crash Course
Java interview guide in PDF format

Who is this for?

Candidate looking for Java jobs in software industry

What You Need to Know?

Some basic Java knowledge in advance is good to have

More details

Description
One Stop Destination For All Java Interview Questions and Answers.

Top 350 Java Interview Questions and Answers (Video Lectures + Revision PDF Book):
(Topics from whichÂ questions are covered)
1. Java-Basics
2. Variables & Data types
3. Operators
4. Control statements - Basics
5. Control statements - Advanced
6. String & StringBuilder
7. Arrays
8. Classes, Objects & Package
9. Access Specifiers, Getter-Setter & this keyword
10. Inheritance
11. Polymorphism
12. Encapsulation & Abstraction
13. Abstract class & Interface
14. Constructors
15. Exception Handling - Basics
16. Exception Handling - Advanced
17. Collections - Basics
18. Collections - Advanced
19. Multithreading Overview
20. Multithreading Implementation
21. Generics - Basics
22. Generics - Advanced
23. Lambda expression
24. Inner class & Final class
25. Static class & Enum
Top 30 Coding Questions
Mock Interviews
26. Spring - Basics, IoC & DI
27. Spring - Components & Beans
28. Spring - Configuration & Annotations
29. Spring - Scopes of a bean
30. Spring - Others
31. Spring Boot - Basics
32. Spring Boot - Project structure, Configuration & Actuator
33. Spring MVC - Basics
34. Spring MVC - Important Annotations
35. REST - Basics
36. REST - HTTP Methods & Status Codes
37. REST - CORS, Serialization, Deserialization, Others
38. REST - Authentication & Authorization

Revision PDFÂ Books: All notes are present in PDFÂ and PPTÂ format in resources of the course.

Code: For every question, the code is present in its slide notes of PowerPoint.

Interview Preparation Tracker Sheet: All questions listed in this tracker excel. Just have a look just before the interviews.

About Instructor: The instructor has more than 15 years of experience in full-stack development and has given and taken more than 100 interviews in his career. He helps candidates in cracking the interviews.

All the best for your interview preparation.
Remember, NEVER EVERÂ GIVEÂ UP before selection while giving job interviews.
Who this course is for:
Candidate looking for Java jobs in software industry

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Java

Happy Rawat

Instructor's Courses

My name is Happy Rawat. I have over 13 years of experience in software development. I have given and taken more than 200 technical interviews in my career. I want to share my learnings with others. My sole purpose is to help candidates fresher or experienced in CRACKING technical interviews.

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