loizenai | Mobile & Web Programming Tutorials

Image to Base64 Java using Java 8 Encode Decode

Tutorial: “Convert Image to Base64 Java – Java 8 Encode Decode an Image to Base64 tutorial”

With Java 8, Base64 has finally got its due. Java 8 now has inbuilt encoder and decoder for Base64 encoding. For some purpose like transfering an image through RestfulAPI or saving an image to a DataBase, We need Encoder (Decode) the image to Base64. In the tutorial, I will guide you how to use Java 8 for converting.

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@angular/fire/storage Angular 11 Upload files to Firebase

Tutorial: @angular/fire/storage – Angular 11 Upload/Display/Delete files to/from Firebase Storage using @angular/fire

Sourcecode at GitHub: Angular Upload Files to Firebase Storage

In this tutorial, ozenero.com shows you way to upload, get, delete Files to/from Firebase Storage in a simple Angular 11 App using @angular/fire. Files’ info will be stored in Firebase Realtime Database.

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Vuejs SpringBoot MariaDB Crud Example [Fullstack]

Tutorial: Vue.js SpringBoot CRUD MariaDB Example | Spring Data JPA + REST + MariaDB CRUD

In this Vue.js SpringBoot tutorial, we show you Vue.js Http Client & Spring Boot Server example that uses Spring JPA to do CRUD with MariaDB and Vue.js as a front-end technology to make request and receive response.

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Spring Boot iText PDF Generation Example from MySQL

Tutorial: “Spring Boot iText PDF Generation Example – Extract MySQL Data to PDF File”

iText is a library for creating and manipulating PDF files in Java and .NET. In the tutorial, we show you how to create a SpringBoot RestAPIs application that uses Spring JPA & iText library to extract data from MySQL records to a PDF file in table format.

What will we do?
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Flux to List – How to convert Reactor Flux to List/Map

Tutorial: “Flux to List – How to convert Reactor Flux to List/Map”

What is a Reactor Flux? A Flux is a Reactive Streams Publisher , augmented with a lot of operators that can be used to generate, transform, orchestrate Flux sequences. It can emit 0 to n elements ( onNext event) then either completes or errors ( onComplete and onError terminal events).
In this tutorial, I introduces ways to convert Reactor Flux into List/Map.

– Reactor – Handle Error
– Reactor – How to Create Flux (Publisher) with Interval

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