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Tech forum for Java, algorithms & data-structures, Hibernate, RESTful API, Spring framework, Microservices architecture, Interview questions, Python, SDET, Machine learning, DevOps.

Sendgrid Dynamic Templates with Spring Boot

Carvia Tech | September 22, 2020 | 2 min read | 0 views

In this tutorial we will use Twilio SendGrid Dynamic Templates for sending emails from a Spring Boot application.

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Install and upgrade Jenkins on Ubuntu 18.04 LTS

Carvia Tech | September 13, 2020 | 1 min read | 6,811 views

In this short tutorial we will apply minor update to existing Jenkins installation on Ubuntu machine.

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Slack Webhook Message from Spring Boot

Carvia Tech | September 13, 2020 | 2 min read | 0 views

In this tutorial we will learn how to send slack messages using webhook from a Spring Boot 2 application.

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Spring Webclient multipart file upload

Carvia Tech | September 12, 2020 | 2 min read | 16 views

Spring 5 WebClient for multipart file upload to a remote service using FileSystemResource.

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Generate UPI QR Code in Java

Carvia Tech | September 12, 2020 | 3 min read | 825 views

We will generate UPI Payments compliant (BHIM, GPay, PayTM) QR Code in PNG/JPG/Base64 format using zxing library in Java & Spring based application.

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Java Exception Class Hierarchy

Carvia Tech | September 12, 2020 | 2 min read | 212 views

Throwable sits at the top of Java Exception Class hierarchy. Exception and Error are the two direct subclasses that extends Throwable.

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REST Assured vs Apache HttpClient and RestTemplate

Carvia Tech | September 12, 2020 | 2 min read | 6,741 views

Comparison of RestTemplate, WebClient, RestAssured, and Apache HttpClient and the problems that are they designed to solve.

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Spring Boot WebClient Basic Authentication

Carvia Tech | September 12, 2020 | 2 min read | 0 views

Spring 5 WebClient provides different mechanisms (ExchangeFilterFunctions, Default headers, Request headers) to set Basic Authentication headers at request or webclient level.

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Pangram checker in java

Carvia Tech | September 12, 2020 | 2 min read | 2,870 views | Java Coding Challenges

A pangram is a sentence containing every letter in the English Alphabet (a-z). Pangram example: The quick brown fox jumps over the lazy dog

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RestAssured multipart file upload

Carvia Tech | September 12, 2020 | 3 min read | 5,051 views | Rest Assured

In this article we will learn how to test multipart/form-data file upload feature using RestAssured library, various assertions, and kotlin support.

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