Labs Java 8 - Interactive Programming Challenges 2025

Name: Labs Java 8 - Interactive Programming Challenges 2025
Rating: 5.0 (3 reviews)

Interactive Programming Challenges to Sharpen Your Java 8 Skills (Lambdas and Streams)

Created byRajneesh Gupta

Last updated 6/2025

English

What you'll learn

Master Java 8’s core features, including lambda expressions, streams, and the Optional class.
Solve practical coding problems using functional programming paradigms.
Understand and implement key concepts like functional interfaces, method references, and default methods.
Explore Java 8's enhanced Date and Time API to manage dates and times effectively.
Build fluency in modern Java syntax and best practices by solving hands-on challenges.

Coding Exercises

This course includes our updated coding exercises so you can practice your skills as you learn.

Course content

5 sections • 18 lectures • 49m total length

Introduction - Java 8 Streams6:34
Filter List of Names4:46
Filter a Collection With and Without Java 8 Streams3:35
Java 8 Streams - Important Notes and Best Practices3:50
Java 8 Streams vs Collections - Key Differences Explained1:12
Create Streams in Java 8 - Various Methods Explained4:08
Java 8 Stream Basics - Core Operations Explained2:05
Java 8 Streams FlatMap2:27
Java 8 Streams GroupBy7:10
Java 8 Stream Mapping Elements2:49

Find the longest string in a list of strings using Java streams
Calculate the average age of a list of Person objects using Java streams:
Merge two sorted lists into a single sorted list using Java streams
Check if a list of integers contains a prime number using Java streams
Find the intersection of two lists using Java streams
Find the kth smallest element in an array using Java streams
Given a list of transactions, find the sum of transaction amounts for each day using Java streams
Given a list of strings, find the frequency of each word using Java streams
Implement a method to partition a list into two groups based on a predicate using Java streams
Implement a method to calculate the Fibonacci sequence using Java streams
Find the median of a list of integers using Java streams
Given a list of strings, find the longest common prefix using Java streams
Find the maximum product of two integers in an array using Java streams
Implement a method to find all anagrams in a list of strings using Java streams
Given a list of intervals, find the total covered length using Java streams
Find the number of occurrences of a given character in a list of strings using Java streams
Given a list of strings, find the longest string using Java streams

Given a list of integers, find out all the even numbers that exist in the list using Stream function
Given a list of integers, find out all the numbers starting with 1 using Stream functions?
How to find duplicate elements in a given integers list in java using Stream functions?
Remove duplicates from a list while preserving the order using Java streams
Given a list of integers, find all non duplicate integers using Java streams:
Given the list of integers, find the first element of the list using Stream functions?
Given a list of integers, find the total number of elements present in list using Stream function?
Given a list of integers, find the maximum value element present in it using Stream functions?
Given a String, find the first non-repeated character in it using Stream functions?
Given a String, find the first repeated character in it using Stream functions?
Given a list of integers, sort all the values present in it using Stream functions?
Given a list of integers, sort all values present in it in descending order using Stream function?
Given an integer array, return true if a value appears at least twice in the array, else return fals
How will you get the current date and time using Java 8 Date and Time API?
Write a Java 8 program to concatenate two Streams?
Java 8 program to perform cube on list elements and filter numbers greater than 50.
How to use map to convert object into Uppercase in Java 8?
How to convert a List of objects into a Map by considering duplicated keys & store in sorted order?
How to count each element/word from the String ArrayList in Java8?
How to find only duplicate elements with its count from the String ArrayList in Java8?
Check if list is empty in Java 8 using Optional, if not null iterate through the list and print it.
Write a program to print the count of each character in a String?

Lambda Practice Project
Functional Practice Project
Default Methods Practice Project
Stream API Practice Project
java.util.function Package Practice Project
Method References Prcatice Project
Optional Class Practice Project
New Date and Time API (java.time) Practice Project
Collectors Utility Class Practice Project
forEach Method in Iterable Interface Practice Project
Nashorn JavaScript Engine Practice Project
Parallel Streams Practice Project
CompletableFuture and Enhanced Concurrency API Practice Project
Base64 Encoding and Decoding Practice Project
Repeating Annotations Practice Project
Type Annotations Practice Project
New APIs for Arrays Practice Project
Improvements in Java Compiler and JVM Practice Project
PermGen Space Removed (Replaced by Metaspace) Prcatice Project
New Files Methods Practice Project

Requirements

Basic Knowledge of Java
Access to Java Development Environment
Willingness to Learn and Experiment

Description

One stop solution to exercise interview based coding exercise for Java Lambdas and Streams.

Unlock the power of Java 8 through hands-on coding labs and interactive programming challenges! This course is designed for learners who want to deepen their understanding of Java 8 features while actively applying them in real-world scenarios. Whether you're a beginner eager to learn Java or an intermediate programmer looking to sharpen your skills, this course provides a dynamic and engaging learning experience.

This is completely targeted for interview based coding exercise based on Java 8 functional programming.

In this course, you won’t just learn Java theory — you’ll be actively coding and solving real-world problems that require you to apply the latest Java 8 features, including Lambda expressions, Stream API, Optional, and new Date/Time API. With over 40 interactive coding challenges and exercises, you’ll gain immediate feedback and insights that will help you grow as a programmer.

Why This Course?

Interactive Approach: Tackle real-world coding challenges that reinforce your understanding of Java 8.
Hands-On Labs: Work through multiple coding exercises, quizzes, and mini-projects that provide instant feedback and boost your confidence.
Clear Explanations: Step-by-step explanations help you understand complex concepts, while example-driven learning keeps you engaged.
Practical Focus: Each lab focuses on applying what you learn to solve practical programming problems.

By the end of this course, you will have:

A deep understanding of the core features introduced in Java 8.
Practical experience solving coding challenges and real-world problems with Java.
A strong foundation to work with Java 8 on professional projects, from web development to data processing applications.

Who this course is for:

Beginner to Intermediate Java Developers
Developers New to Java 8
Software Engineers Looking to Improve Code Efficiency
Students/Software Engineers Preparing for Interviews

Labs Java 8 - Interactive Programming Challenges 2025

What you'll learn

Explore related topics

Coding Exercises

Course content

Introduction10 lectures • 39min

Lab 1 - Lambda and Stream Exercise (18 Lab Exercise)0

Lab 2 - Lambda and Stream Exercise (22 Lab Exercise)0

Concepts and Explanations8 lectures • 11min

Assignments0

Requirements

Description

Who this course is for: