collection Archives - Page 2 of 12

Java – How to add elements at the beginning and end of LinkedList ?

January 19, 2023 SJ 0

In this article, we will discuss how to add elements to LinkedList at the beginning/start & end 1. Add elements to LinkedList : There are Read More

Java – How to convert LinkedList to ArrayList ?

January 16, 2023 SJ 0

In this article, we will discuss how to convert LinkedList to ArrayList LinkedList to ArrayList conversion : LinkedListToArrayList.java Output : Related Articles : References : Read More

Java – How to convert ArrayList to LinkedList ?

January 15, 2023 SJ 0

In this article, we will discuss how to convert ArrayList to LinkedList ArrayList to LinkedList conversion : ArrayListToLinkedList.java Output : Related Articles : References : Read More

Java 8 – How to get Keys from Value in HashMap using Stream ?

December 23, 2022 SJ 0

In this article, we will discuss how to get Keys from Value in Map or Map implemented classes like HashMap, LinkedHashMap or TreeMap using Java Read More

Java – How to get Keys from Value in HashMap ?

December 22, 2022 SJ 0

In this article, we will discuss how to get Keys from Value in Map or Map implemented classes like HashMap, LinkedHashMap or TreeMap Before diving Read More

Java 8 – How to remove last comma (,) from String ?

September 19, 2022 SJ 0

In this article, we will learn how to remove last comma (,) from a String using String‘s substring() method and Java 8 Stream Remove last Read More

Java 8 – How to convert duplicate characters to Uppercase in a String ?

September 16, 2022 SJ 0

In this article, we will learn how to convert duplicate characters/occurrences to Uppercase letter in a String In one of the previous article, we already Read More

Java – How to add/remove/modify an element in List while iterating ?

July 20, 2022 SJ 0

In this article, we will discuss and learn with different illustrations on how to add/remove an element to List/ArrayList while iterating First, we will understand Read More

Java 8 – How to merge/concatenate/join two lists into single list ?

July 19, 2022 SJ 0

In this article, we will discuss with an example for joining or concatenating or merging two or more lists into single list using Java 1.8 Read More

Java 8 – How to Sort String List by its length ?

July 17, 2022 SJ 0

In this article, we will discuss how to sort String List by its length in Ascending-order and Descending-order in Java 1.8 version Sorting String List Read More

Java – How to Sort String List by its length ?

July 16, 2022 SJ 0

In this article, we will discuss how to sort String List by its length in Ascending-order and Descending-order Sorting String List by its length: Using Read More

Java – Find Third Shortest String in an Arrays or List ?

July 9, 2022 SJ 0

In this article, we will discuss how to find third shortest String in an Arrays and List 1. Finding Third Shortest String in an Arrays: We will follow below 2 Read More

Java – Find Third Longest String in an Arrays or List ?

July 8, 2022 SJ 0

In this article, we will discuss how to find third longest String in an Arrays and List 1. Finding Third Longest String in an Arrays: We will follow below 2 Read More

Java – How to make a Collection read-only or unmodifiable ?

July 1, 2022 SJ 0

In this article, we will discuss how to convert a modifiable Collection into an unmodifiable Collection using Collections.unmodifiableCollection(); method 1. Collection implemented classes: Classes that implement directly or via Collection are, ArrayList LinkedList Read More

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Tag: collection

Java 8 – How to get Keys from Value in HashMap using Stream ?

Java – How to get Keys from Value in HashMap ?

Java 8 – How to convert duplicate characters to Uppercase in a String ?

Java – How to make a Collection read-only or unmodifiable ?

Java 8 – Find First and Last elements in a Set or HashSet ?

Java – How to make a HashMap read-only or unmodifiable ?