The HashSet class in Java is part of the Java Collections Framework and implements the Set interface, backed by a hash table (actually a HashMap instance). It does not allow duplicate elements and provides constant-time performance for basic operations like add, remove, contains, and size, assuming the hash function disperses the elements properly among the …
The LinkedList class in Java is part of the Java Collections Framework and provides a doubly-linked list implementation. This guide covers various methods provided by the LinkedList class, including their usage and examples. Table of Contents Introduction Basic Methods add(E e) add(int index, E element) addAll(Collection<? extends E> c) addAll(int index, Collection<? extends E> c) …
This tutorial will cover all the essential methods of the ArrayList class in Java, explaining how each method works and providing examples to demonstrate their usage. Table of Contents Introduction ArrayList Basics ArrayList Methods add(E e) add(int index, E element) addAll(Collection<? extends E> c) addAll(int index, Collection<? extends E> c) clear() clone() contains(Object o) ensureCapacity(int …
The StringBuffer class in Java is used to create mutable strings. Unlike String, which is immutable, StringBuffer objects can be modified after they are created. This tutorial will cover all the methods of the StringBuffer class with examples to demonstrate their usage. Table of Contents Introduction Constructors Methods append capacity charAt chars codePointAt codePointBefore codePointCount …
In this tutorial, we will cover all the methods available in the StringBuilder class in Java. We will start with an introduction to StringBuilder and then provide examples for each method along with comments and output. Table of Contents Introduction to StringBuilder Methods and Examples append() capacity() charAt() codePointAt() codePointBefore() codePointCount() delete() deleteCharAt() ensureCapacity() getChars() …
Introduction Strings are one of the most fundamental and commonly used data types in Java. The java.lang.String class provides numerous methods to manipulate and handle strings effectively. This tutorial covers all the methods of the String class as of Java 21, providing examples and explanations for each method. Table of Contents String Basics Creating Strings …
Java String Tutorial: All String Class Methods with Examples Read More »