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DevOps Interview Questions and Answers

In this article, we will take an overview of the most important DevOps interview questions and answers from basics to advance. Interview questions are very different from online certification exams. In the interview, skills are tested by asking concepts, experiences with tools, scenarios, benefits, issues, and lifecycle related queries. This article outlines DevOps concepts in detail. The questions which will ...

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How to Convert a String to Array in Java

In this example, we are going to learn how to convert a string into an array in Java. We are going to discuss three different methods to break a string into an array. Using substring() methodUsing toCharArray() methodUsing split() method 1. Using substring() method The string class provides substring() method to fetch part of a string. String class has two ...

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Java Deadlock Example

In this article, we are going to show a Deadlock example in Java. 1. Introduction In Java deadlock is defined as a scenario where two or more threads are blocked forever. A computer system normally has many active processes and threads. This is true even in systems that only have a single execution core, and thus only have one thread ...

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Spring Boot Application with Couchbase

Welcome, in this tutorial, we will see how to configure a spring boot application to use the couchbase bucket for storing information using spring data. 1. Introduction Before going further in this tutorial, we will look at the common terminology such as introduction to Spring Boot, Couchbase db, and Lombok. 1.1 Spring Boot Spring boot is a module that provides ...

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How to Fix the Identifier Expected Warning in Java

In this article, we’ll give you some pointers on how to fix the Identifier Expected Warning in Java. 1. Why does it appear? Identifier Expected is one of many different syntax error messages a Java compiler may produce. It occurs when the compiler reaches a point in your program where, based on the grammar of the Java language, an identifier ...

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Using Google reCaptcha with Spring Boot Application

Welcome, in this tutorial, we will see how to implement google captcha (reCAPTCHA v2) in a spring boot web application. reCAPTCHA is a free service that protects an application from spammers. It uses advanced risk analysis techniques to keep humans and bots apart. But before going anything I would suggest you take a look at the part1 of this tutorial. ...

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The Splunk Web Interface

This is an article about the Splunk Web Interface. 1. Introduction Splunk is a software for searching, monitoring, and analyzing machine generated data. It provides a web interface which can import data from various sources, search events, and generate graphs and reports from the searching results. In this example, I will demonstrate: Install Splunk in a docker containerUpload a data ...

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SQL Commit and Rollback Example

1. Introduction In this article, we will look at the Commit and Rollback commands. SQL transactions use Commit and Rollback commands. We will see how to use the Commit and Rollback commands in MySQL RDBMS. 2. What is a Transaction in SQL? A Transaction in SQL is a single logical unit of work.Transactions can make multiple changes to the database ...

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SQL Intersect Example

1. Introduction In this article, we will look at the Intersect operation. SQL Set Theory contains the Intersect. Most of the RDBMS like Oracle, SQL Server, and PostgreSQL support the Intersect operator. However, MySQL does not. In this article, we will understand what the Intersect operator is and how to emulate it in MySQL. 2. What does Set Theory mean? ...

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RESTful Web Service Discovery

1. Introduction This is an in-depth article related to the discovery of Restful Web Service. Spring Boot framework has features to build applications. Spring Boot has features related to building rest services and unit testing the application. It has a eureka registry to lookup and discover the RESTful Web Services. The standard HATEOAS (Hypermedia As The Engine Of Application State) ...

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