Java 8 – How to merge/concatenate/join two lists into single list ?
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
Tag: Collections class
Java 8 – How to Sort String List by its length ?
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 ?
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 – How to make a Collection read-only or unmodifiable ?
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
Java – Find Smallest number in an Arrays or List ?
In this article, we will discuss how to find smallest number in an Arrays and List 1. Finding Smallest number in an Arrays We will Read More
Java – Find Largest number in an Arrays or List ?
In this article, we will discuss how to find largest number in an Arrays and List 1. Finding Largest number in an Arrays We will Read More
Java – How to Merge or Concatenate 2 Arrays ?
In this article, we will discuss how to merge or concatenate 2 Arrays of same type. In one of the previous article, we already discussed Read More
Java – How to make a HashMap read-only or unmodifiable ?
In this article, we will discuss how to convert a modifiable HashMap entries into an unmodifiable HashMap entries using Collections.unmodifiableMap(); method 1. Convert HashMap to Read More
Java – How to make a HashSet read-only or unmodifiable ?
In this article, we will discuss how to convert a modifiable HashSet into an unmodifiable HashSet using Collections.unmodifiableSet(); method 1. Convert HashSet to Read-only: HashSet Read More
Java – How to make an ArrayList read-only or unmodifiable ?
In this article, we will discuss how to convert a modifiable ArrayList into an unmodifiable ArrayList using Collections.unmodifiableList(); method 1. Convert ArrayList to Read-only: ArrayList Read More
Java – How to Sort TreeMap by it Keys in descending order ?
In this article, we will discuss how to sort TreeMap entries by its Keys in descending order 1. Collections.reverseOrder() Returns a comparator that imposes the Read More
Java 8 – How to Sort a Map entries by its Value in 6 ways ?
In this article, we will discuss different ways to sort a Map entries (key-value pairs) by its Value Before proceeding with this sorting examples understand Read More
Java 8 – How to Sort a Map entries by its Key in 6 ways ?
In this article, we will discuss different ways to sort a Map entries (key-value pairs) by its Key Before proceeding with this sorting examples understand Read More
Java – How to sort LinkedList using Collections.sort() method ?
In this article, we will discuss how to sort LinkedList elements in ascending & descending order using Collections.sort() method 1. Collections.sort() method Sorts the specified Read More
Java – How to sort Vector using Collections.sort() method ?
In this article, we will list down steps to sort Vector 1. Vector: Vector is implementation class of List interface (i.e.; Vector implements List) Vector uses resizable array Read More
Java – Sorting Arrays in Ascending and Descending order
In this article, we will discuss how to sort Arrays in both ascending and descending order 1. Sorting Arrays in Ascending order : Passing original/actual Read More
Java – How to get minimum element from an ArrayList ?
In this article, we will discuss how to get minimum element from ArrayList using Collections class’s utility min() method 1. To get minimum element from Read More
Java – How to get maximum element from an ArrayList ?
In this article, we will discuss how to get maximum element from ArrayList using Collections class’s utility max() method 1. To get maximum element from Read More
Java – Conversion of ArrayList into HashSet to remove duplicate elements
In this article, we will discuss how to remove duplicate elements from ArrayList Q) How to convert ArrayList to HashSet ? use inter-conversion collection constructor Read More
Java – How to reverse LinkedHashSet contents ?
In this article, we will discuss how to reverse the contents of LinkedHashSet Key points about LinkedList: LinkedHashSet maintains insertion-order It uses doubly-linked list and Read More