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Java Fundamentals

Java Fundamentals

Beginner

Build a solid foundation in Java — the world's most widely used enterprise language. OOP, collections, streams, and design patterns.

📋 5 tracks ❓ 1,004 questions 💡 71 tips 🎬 20 videos ⏱ ~35h
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Course content

Variables, Types & Operators 4:58

Variables, Types & Operators

⏱ 4:58

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Control Flow & Methods 4:59

Control Flow & Methods

⏱ 4:59

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Arrays, Methods & Varargs 4:27

Arrays, Methods & Varargs

⏱ 4:27

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Strings & Exception Handling 5:32

Strings & Exception Handling

⏱ 5:32

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Practice questions

0/206 answered

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Classes, Objects & Constructors 5:16

Classes, Objects & Constructors

⏱ 5:16

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Inheritance & Polymorphism 4:31

Inheritance & Polymorphism

⏱ 4:31

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Interfaces & SOLID 4:40

Interfaces & SOLID

⏱ 4:40

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Design Patterns 4:26

Design Patterns

⏱ 4:26

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Practice questions

0/185 answered

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ArrayList & the List Interface 4:39

ArrayList & the List Interface

⏱ 4:39

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HashMap & HashSet 4:26

HashMap & HashSet

⏱ 4:26

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Generics 4:33

Generics

⏱ 4:33

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Comparable, Comparator & Collections 4:22

Comparable, Comparator & Collections

⏱ 4:22

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Practice questions

0/208 answered

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Lambdas & Functional Interfaces 4:49

Lambdas & Functional Interfaces

⏱ 4:49

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Stream API 4:40

Stream API

⏱ 4:40

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Optional & Advanced Streams 4:55

Optional & Advanced Streams

⏱ 4:55

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Parallel Streams & Collectors Deep Dive 4:47

Parallel Streams & Collectors Deep Dive

⏱ 4:47

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Practice questions

0/206 answered

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Threads & Runnable 4:30

Threads & Runnable

⏱ 4:30

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Synchronization & Locks 4:44

Synchronization & Locks

⏱ 4:44

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ExecutorService & CompletableFuture 4:47

ExecutorService & CompletableFuture

⏱ 4:47

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Modern Java & JVM Internals 5:27

Modern Java & JVM Internals

⏱ 5:27

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Practice questions

0/199 answered

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Certification Exam

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Certification Exam

Java Fundamentals

❓ 40
Questions
⏱ 90m
Time Limit
% 70%
To Pass

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Certification Exam

Java Fundamentals

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40 Questions

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90 Minutes

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Tips

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Collections Beginner

Comparable vs Comparator

Natural order vs custom order
OOP Intermediate

Records with Custom Accessors and Compact Constructor

Customize record behavior
Generics Beginner

Type Erasure and Its Implications

What generics look like at runtime
JVM Intermediate

String Methods in Modern Java

Useful String additions since Java 11