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The XOR Operator in Java 1. Overview In this short tutorial, we’re going to learn about the Java XOR operator. We’ll go through a bit of theory about XOR operations, and then we’ll see how to implement them in Java. 2. The XOR Operator Let’s begin with a little reminder of the… Continue Reading java-xor-operator
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Join Array of Primitives with Separator in Java 1. Introduction In this quick tutorial, we’ll learn how to join an array of primitives with a single-character separator in Java. For our examples, we’ll consider two arrays: an array of int and an array of char. 2. Defining the Problem Let’s start… Continue Reading java-join-primitive-array
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How to Get a Name of a Method Being Executed? 1. Overview Sometimes we need to know the name of the current Java method being executed. This quick article presents a couple of simple ways of getting hold of the method name in the current execution stack. 2. Using getEnclosingMethod… Continue Reading java-name-of-executing-method
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Java Classes and Objects 1. Overview In this quick tutorial, we’ll look at two basic building blocks of the Java programming language – classes and objects. They’re basic concepts of Object Oriented Programming (OOP), which we use to model real-life entities. In OOP, classes are blueprints or templates for objects. We… Continue Reading java-classes-objects
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Variable Scope in Java 1. Overview In Java, as in any programming language, each variable has a scope. This is the segment of the program where a variable can be used and is valid. In this tutorial, we’ll introduce the available scopes in Java and discuss the differences between them.… Continue Reading java-variable-scope
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Extending an Array’s Length 1. Overview In this tutorial, we’ll take a look at the different ways in which we can extend a Java array. Since arrays are a contiguous block of memory, the answer may not be readily apparent, but let’s unpack that now. 2. Using Arrays.copyOf First, let’s… Continue Reading java-array-add-element-at-the-end
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Java toString() Method 1. Overview Every class in Java is a child of the Object class either directly or indirectly. And since the Object class contains a toString() method, we can call toString() on any instance and get its string representation. In this tutorial, we’ll look at the default behavior of toString() and learn how to… Continue Reading java-tostring
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Introduction to Java Serialization 1. Introduction Serialization is the conversion of the state of an object into a byte stream; deserialization does the opposite. Stated differently, serialization is the conversion of a Java object into a static stream (sequence) of bytes which can then be saved to a database or… Continue Reading java-serialization
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Compiling Java *.class Files with javac 1. Overview This tutorial will introduce the javac tool and describes how to use it to compile Java source files into class files. We’ll get started with a short description of the javac command, then examine the tool in more depth by looking at… Continue Reading javac
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Guide to the super Java Keyword 1. Introduction In this quick tutorial, we’ll take a look at the super Java keyword. Simply put, we can use the super keyword to access the parent class. Let’s explore the applications of the core keyword in the language. 2. The super Keyword with Constructors We… Continue Reading java-super
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