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Immutable Set in Java 1. Introduction In this tutorial, we’re going to have a look at different ways of constructing an immutable set in Java. But first, let’s understand the immutable set and see why we need it. 2. What is an Immutable Set? In general, an immutable object will… Continue Reading java-immutable-set
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Initializing HashSet at the Time of Construction 1. Overview In this quick tutorial, we’ll introduce various methods of initializing the HashSet with values, at the time of its construction. If you’re instead looking to explore the features of HashSet, refer to this core article here. We’ll dive into Java built-in methods since Java 5 and before followed… Continue Reading java-initialize-hashset
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A Guide to TreeSet in Java 1. Overview In this article, we’ll have a look at an integral part of the Java Collections Framework and one of the most popular Set implementations – the TreeSet. 2. Intro to TreeSet Simply put, the TreeSet is a sorted collection that extends the… Continue Reading java-tree-set
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HashSet and TreeSet Comparison 1. Introduction In this article, we’re going to compare two of the most popular Java implementations of the java.util.Set interface – HashSet and TreeSet. 2. Differences HashSet and TreeSet are leaves of the same branch, but they differ in few important matters. 2.1. Ordering HashSet stores… Continue Reading java-hashset-vs-treeset
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Performance of contains() in a HashSet vs ArrayList 1. Introduction In this quick guide, we’re going to discuss the performance of the contains() method available in java.util.HashSet and java.util.ArrayList. They are both collections for storing and manipulating objects. HashSet is a collection for storing unique elements. To learn more about the HashSet,… Continue Reading java-hashset-arraylist-contains-performance
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An Introduction to Synchronized Java Collections 1. Overview The collections framework is a key component of Java. It provides an extensive number of interfaces and implementations, which allows us to create and manipulate different types of collections in a straightforward manner. Although using plain unsynchronized collections is simple overall, it… Continue Reading java-synchronized-collections
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Convert a Map to an Array, List or Set in Java 1. Overview This short article will show how to convert the values of a Map to an Array, a List or a Set using plain Java as well as a quick Guava based example. This article is part of… Continue Reading convert-map-values-to-array-list-set
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Combining Different Types of Collections in Java 1. Introduction In this quick tutorial, we’ll explore different ways of combining collections in Java. We’ll explore various approaches using Java and external frameworks like Guava, Apache, etc. For the introduction to Collections, have a look at this series here. 2. External Libraries… Continue Reading java-combine-collections
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Set Operations in Java 1. Introduction A set is a handy way to represent a unique collection of items. In this tutorial, we’ll learn more about what that means and how we can use one in Java. 2. A Bit of Set Theory ==== 2.1. What Is a Set? A… Continue Reading java-set-operations
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Apache Commons Collections SetUtils 1. Overview In this article, we’ll be exploring the SetUtils API of Apache Commons Collections library. Simply put, these utilities can be used to execute certain operations on Set data structures in Java. 2. Dependency Installation In order for us to use the SetUtils library in… Continue Reading apache-commons-setutils
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