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Java Stream – How to use Java 8 streams

1. Introduction In this post, we will learn about how to use a Stream in Java, which was introduced as part of Java 8 version. Let us understand what actually the word streaming means with an example and what the java 8 API provides with regard to methods. When you start watching a video, a small portion of the file ...

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Spring boot and AWS S3: Delete file

Welcome readers, in this tutorial, we will show how to delete a file from an AWS S3 bucket using the spring boot framework. 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 ...

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Java Unit Testing with JUnit Example

This is an article for Java Unit Testing with JUnit Example. 1. Introduction Java unit testing is a software testing where methods and classes are tested. JUnit is a unit testing framework for the Java programming language which provides a way to test the application as many as you want. Unit testing usually includes the following steps: define a testcreate ...

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@Override Java Annotation Example

In this article, we will speak about the override annotation, which is used as @Override in a Java program. Firstly, we will talk about what is the override in OOP in general and why we use it. Then we will analyze why we do overrides in methods and last but not least we will do some examples. 1. Introduction In ...

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Spring Boot and AWS S3: Download file

Welcome readers, in this tutorial, we will show how to download a file from an AWS S3 bucket using the spring boot framework. 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 ...

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Spring Boot and AWS S3: Upload file

Welcome readers, in this tutorial, we will show how to upload a file to an AWS S3 bucket using the spring boot framework. 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 ...

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Treeset Class Java Example

1. Introduction In this article, we will take a look at the Treeset class in Java using examples. TreeSet implements the SortedSet interface in Java which persists in a Tree. The ordering of the elements in a TreeSet is based on natural ordering. 2. TreeSet Java Example TreeSet does not allow duplicate values. TreeSet persists the objects sorted in ascending ...

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Java Assert Keyword Example

In this article, we will explain what is the Assert Keyword in Java using examples. We will also create an example about assertion, that allows testing the correctness of any assumptions that have been made in a program. 1. Introduction An assertion is achieved using the assert statement in Java. While executing an assertion, it is believed to be true. If it ...

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Java BigInteger Class Example

In this article, we will discuss about the Java BigInteger Class – java.math.BigInteger. This interesting class extends the java.lang.Number class and implements the java.lang.Comparable interface. public class BigInteger extends Number implements Comparable 1. Java BigInteger Class – Introduction All operations behave as if BigIntegers were represented in two’s-complement notation (like Java’s primitive integer types). BigInteger provides analogues to all of ...

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Deploying a Spring Boot application on AWS

Welcome readers, in this tutorial, we will discuss how to deploy a simple Spring Boot application on AWS. 1. Introduction to AWS To deploy a simple Hello World application on AWS we will make use of AWS Elastic Beanstalk. AWS Elastic Beanstalk is a compute service that makes easy for the developers to quickly deploy and manage application which is ...

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