Java Courses and Certifications

Master Spring Boot 3 & Spring Framework 6 with Java

12152 ratings at Udemy

Become Java Spring Boot Full Stack Developer. Learn Spring Framework, Spring Boot, Spring Data, Docker & AWS

• Udemy
• 1 day 17 hours 51 minutes
• Self-Paced
• Paid Course

Learn Java Functional Programming with Lambdas & Streams

11341 ratings at Udemy

Learn Java Functional Programming with Lambdas & Streams. Learn the most powerful NEW feature in Java 8 and Java 9.

• Udemy
• 6 hours 22 minutes
• Self-Paced
• Paid Course

Spring MVC For Beginners - Build Java Web App in 25 Steps

10638 ratings at Udemy

Learn Spring MVC Framework with a Hands-on Step by Step Approach building a Todo Management Application!

• Udemy
• 6 hours 16 minutes
• Self-Paced
• Paid Course

Selenium WebDriver 4 With Java - Novice To Ninja [2025]

10541 ratings at Udemy

Join the "Top Rated Selenium 4 (Latest) Course"-Basics To Advanced Level With POM, Grid, Maven,GitHub,Jenkins,Interviews

• Udemy
• 1 day 20 hours 17 minutes
• Self-Paced
• Paid Course

Java Web Services

10039 ratings at Udemy

Learn how to design,create , consume and secure SOAP and REST web services from scratch in easy steps.

• Udemy
• 17 hours 10 minutes
• Self-Paced
• Paid Course

Learning Simple Data Structures in Java

Work with Java's native data structures: create and index arrays and multidimensional arrays, manage ArrayLists, store key-value pairs in HashMaps, and track uniqueness with HashSets.

• CodeSignal
• 2 hours
• Self-Paced
• Free Certificate

Java String Manipulation for Beginners

Manipulate text in Java: concatenate and compare strings, format output, use escape sequences, and search, replace, split, and join strings.

• CodeSignal
• 2 hours
• Self-Paced
• Free Certificate

Object-Oriented Programming in Java

Build Java classes for cars, cell phones, and savanna animals: write constructors, encapsulate attributes, and apply inheritance, interfaces, abstract classes, and method overriding.

• CodeSignal
• 2 hours
• Self-Paced
• Free Certificate

Hashing, Dictionaries, and Sets in Java

Implement and apply Java HashSets and HashMaps: track unique visitors, detect anagrams, count word frequencies, and analyze time complexity of hash-based operations.

• CodeSignal
• 2 hours
• Self-Paced
• Free Certificate

Sorting and Searching Algorithms in Java

Implement binary search, quick sort, and merge sort in Java, analyze their complexity, and use built-in Arrays sorting with comparators, k-th order statistics, and inversion counting.

• CodeSignal
• 4 hours
• Self-Paced
• Free Certificate

Advanced Data Structures - Stacks and Queues in Java

Implement stacks and queues in Java: push and pop methods, parentheses validation, string reversal, circular queues, moving averages, and constant-time maximum lookup.

• CodeSignal
• 2 hours
• Self-Paced
• Free Certificate

Multidimensional Arrays and Their Traversal in Java

Learn to manipulate and efficiently traverse multidimensional arrays in Java, including zigzag traversal, matrix transposition, and ascending grid paths.

• CodeSignal
• 5 hours
• Self-Paced
• Free Certificate

Java HashMaps in Practice: Revision and Application

Practice using Java HashMaps for efficient data access, occurrence counting, aggregation, and real-world library and inventory tasks.

• CodeSignal
• 4 hours
• Self-Paced
• Free Certificate

Mastering Task Decomposition in Java

Break complex Java coding problems into manageable sub-tasks, implement each part, and combine them into cohesive solutions.

• CodeSignal
• 3 hours
• Self-Paced
• Free Certificate

Mastering Algorithms: HashMaps, Two Pointers, and Beyond in Java

Learn to optimize Java solutions with HashMaps, HashSets, complexity analysis, and two-pointer techniques.

• CodeSignal
• 3 hours
• Self-Paced
• Free Certificate