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

    • Learn Mockito

      Enhance your unit tests through practical mocking

  • 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)

>> Sequenced Collections in Java

  • reference

>> Converting Object To Map in Java

  • popular

>> Convert Hashmap to JSON Object in Java

  • popular

>> Converting HashMap Values to an ArrayList in Java

>> How To Convert Excel Data Into List Of Java Objects

>> How to Get Index of an Item in Java Set

>> Difference Between Hashtable and ConcurrentHashMap in Java

>> Cartesian Product of Any Number of Sets in Java

>> Get a Random Element From a Set in Java

>> Get Values and Keys as ArrayList From a HashMap

>> Sorting Java Map in Descending Order

>> HashMap with Multiple Values for the Same Key

>> Remove Duplicate Values From HashMap in Java

>> How to Get First Item From a Java Set

>> What’s the Difference Between Iterator and ListIterator?

>> How to Modify a Key in a HashMap?

>> Converting JsonNode Object to Map

>> Difference Between Map.clear() and Instantiating a New Map

>> Converting Map<String, Object> to Map<String, String> in Java

>> Set Default Value for Elements in List

  • «
  • ← 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