The Baeldung logo
  • The Baeldung Logo
  • Start Here
  • Spring Courses ▼▲
    • REST with Spring Boot

      The canonical reference for building a production grade API with Spring

    • Learn Spring Security ▼▲

      THE unique Spring Security education if you’re working with Java today

      • Learn Spring Security Core

        Focus on the Core of Spring Security 6

      • Learn Spring Security OAuth

        Focus on the new OAuth2 stack in Spring Security 6

    • Learn Spring

      From no experience to actually building stuff​

    • Learn Spring Data JPA

      The full guide to persistence with Spring Data JPA

  • Java Courses ▼▲
    • Learn JUnit

      Master the most popular Java testing framework.

    • Learn Maven

      Simplify Your Build with Apache Maven

    • Learn Hibernate JPA

      Master persistence with the Java specification and Hibernate implementation

  • Pricing
  • About ▼▲
    • Full Archive

      The high level overview of all the articles on the site.

    • Baeldung Ebooks

      Discover all of our eBooks

    • About Baeldung

      About Baeldung.

Category upJava

Java Collections

Learn about the Java Collections framework that provides interfaces and implementations for Lists, Maps, and Sets. Learn how to work with Java Collections through the guides below.

  • Java HashMap (55)
  • Java Set (29)
  • Guava (27)
  • Iteration (22)
  • Java Queue (17)
  • Apache Commons Collections (17)
  • Java Collections Basics (16)
  • Map Conversions (12)
  • Map Entry (12)

>> Determine the Class of a Generic Type in Java

  • popular

>> Get the Position of Key/Value in LinkedHashMap Using Its Key

>> Casting Maps to Complex Objects

>> How to Use Pair With Java PriorityQueue

>> Create HashMap with Character Count of a String in Java

>> Iterator vs forEach() in Java

>> Parallel Collection Processing with Parallel Collectors and Virtual Threads

>> Immutable vs Unmodifiable Collection in Java

>> Check if an Element Is Present in a Set in Java

>> Merge Overlapping Intervals in a Java Collection

>> Find Map Keys with Duplicate Values in Java

>> Flatten a Stream of Maps to a Single Map in Java

>> Adding Elements to a Collection During Iteration

>> Finding the Peak Elements of a List

>> How to Pretty-Print a Map in Java

>> Find an Unique Email Address in a List

>> Collect Stream of entrySet() to a LinkedHashMap

>> PriorityQueue iterator() Method in Java

>> Comparison of for Loops and Iterators

>> Detect the Last Iteration in for Loops in Java

  • «
  • ← Previous
  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • Next →
  • »
Course – LSSO – NPI EA (tag = OAuth)
LSSO Course Banner
The Baeldung logo

Courses

  • All Courses
  • Baeldung All Access
  • Baeldung All Team Access
  • The Courses Platform

Series

  • Java “Back to Basics” Tutorial
  • Learn Spring Boot Series
  • Spring Tutorial
  • Get Started with Java
  • All About String in Java
  • Security with Spring
  • Java Collections

About

  • About Baeldung
  • The Full Archive
  • Editors
  • Our Partners
  • Partner with Baeldung
  • eBooks
  • FAQ
  • Baeldung Pro
  • Terms of Service
  • Privacy Policy
  • Company Info
  • Contact
The Baeldung Logo