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SQL Primary Key Example

Welcome readers, in this tutorial, we will understand the SQL Primary Key column that uniquely identifies a tuple in the database table. 1. Introduction SQL Primary Key is a column or multiple columns that uniquely identify a tuple in the database table. It contains unique values but cannot have null or duplicate It consists of multiple columns known as a ...

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Java Interface Example

In this post, we feature a comprehensive Java Interface Example. 1. Introduction Java interface is an abstract type that defines methods that classes must implement. It can contain constants, abstract method signatures, default methods along with an implementation body, static methods along with an implementation body, and nested types. Java Interface defines the “contracts” and represents the IS-A relationship. Interface ...

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Java Date Format Example

In this article, we will check the options available on Java Date Format. 1. Introduction Java has multiple packages providing various utility functions to make developer’s job easier. One such is the java.text package which includes utility classes for parsing and formatting numbers and dates, along with utility classes for building other kinds of parsers. The java.text.DateFormatclass and its concrete ...

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Spring Boot HATEOAS in REST API Example

Welcome readers, in this tutorial, we will implement the HATEOAS principle to REST resources in a spring boot application. 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 ...

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Ternary Operator Java Example

1. Introduction The word “ternary“, in mathematical terms, is an operation that takes 3 variables and, when combined, produces a single output. In Java, as in other languages such as JavaScript or Python, the ternary, or conditional operator, is the only operator that takes 3 operands and produces a value. In this example we will examine the syntax and the ...

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Binary Search Tree Java Example

In this post, we feature a comprehensive Binary Search Tree Java Example. 1. Introduction A binary tree is a recursive data structure where each node can have at most two children. A Binary Search Tree (BST) is a special type of binary tree which has the following properties: The left sub-tree of a node contains the nodes with the key’s ...

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Spring Cloud Zuul Gateway Example

Welcome readers, in this tutorial, we will explore an interesting and the last Spring Cloud component known as Zuul Gateway to implement a gateway for the microservices. 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 ...

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IntelliJ vs Eclipse: Complete IDE Comparison

In this post, we feature the complete IDE Comparison on IntelliJ vs Eclipse. IntelliJ and Eclipse are the integrated development environment tools. IntelliJ Idea has an integrated development environment with different features for faster and efficient coding. Eclipse has a workspace and extensible framework for plugins to customize the development environment. In this tutorial, we see the features of the ...

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Apache Maven Enforcer Plugin Example

1. Apache Maven Enforcer Plugin – Introduction Maven is a software project management and comprehension tool. Based on the concept of a project object model (POM), Maven can manage a project’s build, reporting and documentation from a central piece of information. 1.1 Maven installation guide You just need to download the Maven’s zip file, unzip it to a folder, and ...

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Spring Cloud Feign Client Example

Welcome readers, in this tutorial, we will explore an interesting Spring Cloud component known as Netflix Feign Client to implement a declarative REST client. 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 ...

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