@josealonso

Improved Collections in Java 21

Apr 2 · 6 min read · Introduction In Java, there are three fundamental abstractions for grouping data: List<E>: Index-ordered collection that allows duplicates. Elements maintain their insertion position (ArrayList, Link

Java Data Types at a glance

Jan 3 · 8 min read · Java Data Types Java requires specifying the data type when declaring a variable.This has two goals: To know how many memory locations are used. To know which operations can be performed on the data

How to create a class - Best Practices

Jul 22, 2025 · 7 min read · Introduction We will explain how to create an object in Java. It has evolved from the old Javabeans to the use of features in the latest versions of the language. Setters and getters We have a Person

Hash Tables and hashCode()

Jun 18, 2025 · 6 min read · Introduction When creating a class in Java, there are three methods that are commonly overridden: equals() hashCode() toString() This article focuses on the hashCode() method. How a hash table wo

Mastering Object Equality in Java

May 2, 2025 · 6 min read · Introduction The == operator is used to compare references, while the equals method is used to compare the contents of objects. Comparison for predefined types Primitive types The comparison operator