Do you want to know how to develop your skillset to become a Java Rockstar?

Subscribe to our newsletter to start Rocking right now!

To get you started we give you our best selling eBooks for FREE!


1. JPA Mini Book

2. JVM Troubleshooting Guide

3. JUnit Tutorial for Unit Testing

4. Java Annotations Tutorial

5. Java Interview Questions


and many more ....



Java Primitive Types Tutorial

This is a tutorial about Java Primitive Data Types. Primitive types are the most basic data types available in any programming language. Being an object-oriented language Java supports both primitive types and objects as its data types. In this article, we are going to see all the supported Java primitive types. Java is a strongly typed language and every variable ...

Read More »

Creating and Starting Java Threads

In this post, we feature a comprehensive article on Creating and Starting Java Threads. 1. Introduction This article aims at a simplified understanding of creating and starting threads via an example-based approach. The examples and code samples are based on JDK 8. Table Of Contents 1.Introduction 2.Threads 3.Simple Threads 3.1.Extends Thread 3.2.Implement Runnable 4.Executors 5.Callable & Future 6.FutureTask 7.CompletableFuture 7.1.CompletableFuture ...

Read More »

How to fix cannot find symbol Java Error

We would have come across the error – Cannot find symbol when compiling our Java classes. In this article, let us look at some common causes and how to avoid them. 1. Cannot find symbol Java error This compilation error occurs when the compiler is unable to get an identifier declared in the code. Some of the usual causes could ...

Read More »

Java Data Structures Tutorial

In this post, we feature a comprehensive tutorial on Java Data Structures. 1. What is a Data Structure in Java? A data structure in java is a particular way of organizing data in a computer so that it can be used effectively. The idea is to reduce the space and time complexities of different tasks.  Table Of Contents 1. What ...

Read More »

Basic Operators – OR in Java

Hello readers, in this tutorial, we will learn the operator OR in Java programming language. 1. Introduction Java programming offer Operators that are used to perform various operations . In this tutorial, we’ll only cover the OR operator that falls under the Conditional and Bitwise category. 1.1 Conditional operators in Java Following table list the different conditional operators. Operator Description ...

Read More »

Java Capitalize First Letter Example

In this post, we feature a comprehensive Java Capitalize First Letter Example. We want to write a Java program to convert first character uppercase in a sentence and if any character apart from the first one is in Uppercase then convert in into Lowercase. 1. Introduction Firstly, lets see how to capitalize the first letter of a single word, Example01: ...

Read More »

ADT Java Tutorial

This article will feature a comprehensive (Abstract Data Types) ADT Java Tutorial. Table Of Contents 1. What is Abstract Data Types (ADT) ? 2. Operations on ADT 3. ADTs in Java 3.1. List ADT 3.2. Stack ADT 3.3. Queue ADT 4. Which ADT to choose ? 5. Conclusion 6. References 1. What is Abstract Data Types (ADT) ? Let us ...

Read More »

Dynamic Array Java Example

An Array is a container object that holds a fixed number of values of a single type. The length of an array is established when the array is created. The length is fixed after creation. A dynamic array is a variable-size list data structure that allows elements to be added or removed. Dynamic arrays overcome a limit of static arrays, ...

Read More »

Big O Notation Java Example

In this post, we feature a comprehensive Big O Notation Java Example. 1. Introduction Asymptotic notations are used to analyze an algorithm’s running time by identifying its behavior as the input size for the algorithm increases. There are six symbols used to characterize the relative growth rates of functions: SymbolSummary f = Θ(g) f grows at the same rate as ...

Read More »

Char Array to String Java Example

Hello readers! In this tutorial, we feature an example on how to convert a Char Array to String in Java. We will learn different ways of this conversion. Meanwhile, you can also check the String to Char Array Example. 1. Introduction Java programming offers possible ways to convert a character array (char []) to String. A new String is allocated ...

Read More »