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Spring Boot H2 Database Example

Welcome readers, in this tutorial, we will create a spring boot application that connects to an h2 database. 1. Introduction Spring boot is a module that provides rapid application development feature to the spring framework including auto-configuration, standalone-code, and production-ready code It creates applications that are packaged as jar and are directly started using embedded servlet container (such as Tomcat, ...

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Redis Installation Example

This example post is a comprehensive tutorial on Redis Installation and on how to start working with Redis. Table Of Contents 1. Introduction 1.1. What is Redis ? 1.2. Redis compared to other databases 2. License 3. Documentation 4. Installing Redis 4.1. Installing Redis on Linux via package manager 4.2. Installing Redis on Linux by building it from source 4.3. ...

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Instantiate Java Example

In this post, we feature a comprehensive article implementing an Instantiate Java example. The phrase “instantiating a class” means to create an object. A class provides the blueprint for objects, and we create an object from a class. For example, the statement – Animal doggy = new Animal(); has three parts to it. Declaration: Animal doggy declares a variable doggy ...

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Java Double Primitive Example

In this article, we will focus on examples in order to understand the Java double primitive type. 1. Introduction The double data type is a double-precision 64-bit IEEE 754 floating point. The double data type can store fractional numbers from 1.7e−308 to 1.7e+308. That range can also be positive or negative. Note that you should end the value of a double with a “d”. ...

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Java Matrix Example

In this article, we will discuss the Matrix in Java. We will cover what matrix are, how to create a Java matrix, how to traverse a matrix and some of the common operations on matrices. 1. What is a Matrix in Java? A Matrix is a rectangular array. The elements are arranged in rows and columns. Since there are two ...

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Spring Boot Oracle Connection Example

This article is a Spring Boot Oracle Connection Example. Oracle (Oracle database/RDBMS) is a proprietary multi-model database management system made and marketed by Oracle Corporation. It’s one of the most popular databases used in the world. This article will show you how to connect Spring Boot to an Oracle database. 1. Tools and Requirements Oracle XE free download – requires ...

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Linear Search Java Example

1. Introduction Linear search is a computer algorithm which finds an element from an array sequentially. The time complexity is O(n) in the worst case – meaning the element is the last element of the array or not in the array. The time complexity is O(1) in the best case – meaning the element is the first element of the ...

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Java Exercises

In this post, we feature an article with Java Exercises. In this tutorial, we will see the Java features in detail through code examples. 1. Overview We look at the features of Java in this article. Java is used for developing software and executing the code. The exercises help to demonstrate the java language concepts. Table Of Contents 1. Overview ...

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Basic Operators: ^ in Java

In this post, we feature a comprehensive article about the Bitwise Operator ^ in Java. 1. Introduction Bitwise XOR (exclusive or) is one of the bitwise operators which operate on individual bits. It is denoted by ^ symbol. ^ requires two arguments in order to work and it performs XOR operation between them in their binary form. XOR returns true ...

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Java Unsigned int Example

In this article, we will talk about the Java Unsigned int. Firstly, we will answer the question if java has unsigned int data type and then we will show you some Java Unsigned int Example on Guava library and JOOU library. 1. Introduction There are a lot of options if you want to store a number in Java. You can ...

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