Author Archives

• Advanced profile management in Spring Boot

  By Mohamed Sanaulla on January 9, 2020 • ( 0 )

  We all are aware of profile management in Spring Boot and the flexibility it provides in configuring our applications for different environments. The other powerful aspect of this is that at any given time we can have multiple active profiles…. Read More ›

• JDK 14 – JEP 361 Switch Expressions out from preview

  By Mohamed Sanaulla on December 30, 2019 • ( 1 )

  In my previous post, I wrote about switch expressions and related enhancements released as a preview feature for JDK 12. Subsequently, in JDK 13 there were some changes proposed, like using yield keyword to return value from the switch block… Read More ›

• JEP 355 Text Blocks in JDK 13

  By Mohamed Sanaulla on October 4, 2019 • ( 0 )

  JDK 13 went GA on September 17th, 2019 and the prominent new features are listed here. One of the new features is “text blocks”. This allows writing multiline strings easily without the need for concatenation while splitting into different lines…. Read More ›

• Integrating Amazon Cognito With Single Page Application (Vue.js)

  By Mohamed Sanaulla on April 20, 2019 • ( 21 )

  

  Update:  I have reviewed this post based on the comments and I have fixed ambiguity in the same. Please refer to the sample code and remember to replace the values in the `.env.local` (https://github.com/sanaulla123/samples/blob/master/aws-cognito-spa-demo/.env.local) file with those which are available… Read More ›

• Integrate Spring Boot Application with Amazon Cognito

  By Mohamed Sanaulla on April 17, 2019 • ( 8 )

  In this article, we will show how to use Amazon Cognito service for authentication users in a Spring Boot application using the OAuth 2.0 client library introduced in Spring Security 5.0. What is AWS Cognito? Amazon Cognito is service offered… Read More ›

• How to Create QRCode Using QRGen in Java

  By Mohamed Sanaulla on April 15, 2019 • ( 0 )

  In one of my previous articles, we saw how to create QRCode and its SVG equivalent using Zxing Java library. The Zxing library is no longer actively maintained and for this, there is a wrapper around Zxing library called QRGen,… Read More ›

• JDK 12 – JEP 325 Switch Expressions

  By Mohamed Sanaulla on April 13, 2019 • ( 1 )

  JDK 12 went GA on March 19, 2019, keeping its word on shorter release cycles and frequent releases. The features part of the release can be found here. One of the interesting features for the developers is the “JEP 325… Read More ›

• How to create a QR Code SVG using Zxing and JFreeSVG in Java?

  By Mohamed Sanaulla on April 12, 2019 • ( 2 )

  In this article, we will look at how to use the Zxing QR code generation library and JFreeSVG library to create a QR Code SVG image in Java. QR Code Generation The below code creates a java.awt.image.BufferedImage object representing QR… Read More ›

• Working with LocalDate, LocalTime and LocalDateTime

  By Mohamed Sanaulla on September 27, 2018 • ( 0 )

  Java 8 had a major change for the date and time APIs, which was the inclusion of Joda Time APIs into JDK under the JSR 310: Date and Time API. This JSR was lead by Stephen Colebourne, the creator of… Read More ›

• Launch Single-File Source-Code Programs in JDK 11

  By Mohamed Sanaulla on July 5, 2018 • ( 0 )

  JEP 330 – Launch Single-File Source-Code Programs is one of the exciting features in the upcoming JDK 11(18.9) release. This feature allows executing your java source code directly using the java interpreter. The source code is compiled in memory and… Read More ›