The Java Interview Handbook: 300+ Interview Questions

Course Overview

It’s very common to have interviews testing your knowledge of a programming language you claim to be an expert in. If you've got an interview coming up on Java soon and need to get up to speed, this is the ideal course for you. You'll refresh your memory on everything from the basics ... See More

How You'll Learn

Hands-on coding environments

You don’t get better at swimming by watching others. Coding is no different. Practice as you learn with live code environments inside your browser.

Faster than videos

Videos are holding you back. The average video tutorial is spoken at 150 words per minute, while you can read at 250. That‘s why our courses are text-based.

No set-up required

Start learning immediately instead of fiddling with SDKs and IDEs. It‘s all on the cloud.

Progress you can show

Built in assessments let you test your skills. Completion certificates let you show them off.

Hands-on coding environments

You don’t get better at swimming by watching others. Coding is no different. Practice as you learn with live code environments inside your browser.

Faster than videos

Videos are holding you back. The average video tutorial is spoken at 150 words per minute, while you can read at 250. That‘s why our courses are text-based.

No set-up required

Start learning immediately instead of fiddling with SDKs and IDEs. It‘s all on the cloud.

Progress you can show

Built in assessments let you test your skills. Completion certificates let you show them off.

Course Contents

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1. Java Ecosystem

Introduction

Java & it's Ecosystem

Java Virtual Machine

Java Flavors & Processes

Java Tools & Files

2. Methods

Variable Argument Passing

Pass by Value

Pass by Reference

Method Overloading

3. Classes

Accessibility

The Object Class

Constructors

Initialization

Classes

Nested Classes

Anonymous and Local Classes

Abstract Classes

Final Class

Super Keyword

Finalize

4. Interfaces

Interfaces

More on Interfaces

5. Inheritance

Inheritance

Multiple Inheritance

Inheritance Gotchas

6. Lambda Expressions

Basics

More on Lambdas

7. Generics

Why Generics

Raw Types

Generic Types

Bounded Types

Type Inference

Erasure

Bridge Methods

Wildcard

The Get & the Put Principle

Reification

8. Multi-Threading

Fundamentals

Thread Safety

Mutexes vs Semaphores

Synchronized

Volatile

Wait() and Notify()

More on Threading

9. Memory Management

Memory Areas

Reference Strengths

Garbage Collection

Memory Tuning

10. Collections

Collection Types

Iterating in Java

Summary

11. Exceptions

Exceptions

Checked vs Unchecked

Catch Block

More on Exceptions

12. Reflection

Introduction

java.lang.Class

Class Modifiers

Instantiation using Reflection

Classloaders

13. Serialization

Basics

More on Serialization

14. Miscellaneous Topics

Types

Keywords

Annotations

Boxing

Unboxing

Package

Strings

Casting

15. Java in Practice

Quick Note

Object Creation

Using Objects

Designing Classes

Inheritance vs Composition

Interfaces vs Abstract Classes

Using Generics

Enums & Annotations

Method Design

General Best Practices

Exceptions Handling

Concurrency

16. Patterns

Singleton

Builder

Cheat Sheet

17. The End

Epilogue