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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 Java BigInteger Class – java.math.BigIntegerand create a java biginteger example. 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 ...

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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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Java Print Example

1. Introduction Java print, Java println and Java System.out.println method is a convenient method found both within the java.io.PrintStream and java.io.PrintWriter class and is used to display a text on the console. The text is passed as a parameter to this method in the form of a String. After printing the text on the console, it places the cursor at ...

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Migrating from Java 8 to Java 13

In this article, we will demonstrate how to migrate an application from Java SE 8 to Java SE 13. 1. Introduction Oracle began a six-month release cadence for Java Standard Edition starting with Java 10. Instead of being major version releases, they are instead “feature releases”. This release cycle is in the spirit of Continuous Integration / Continuous Deployment and ...

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Java Final Keyword Example

1. Introduction In a programming language like Java, the word final is a keyword that is used as an access modifier before variables, methods, and classes. A keyword is a word that has special meaning for the compiler and cannot be used as an Identifier in a language. The final word can be used before a variable or before a ...

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What are Cloud-Native Applications ?

1. What Cloud-Native Applications are – Introduction The term cloud-Native Apps can have many meanings. In this post, we want to share some considerations, definitions and some values, practices and tools. Business and IT have never needed to be so aligned as they are today. We live in an era of constant innovation and not to say at least daily. ...

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