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Latest 20+ JMS Interview Questions and Answers (2020)

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A quick walk through to JMS(Java Message Service) frequently asked interview questions and answers. The lastest questions from 2020 are added to the list. 1. Introduction In this tutorial, We’ll learn about JMS interview questions that are frequently asked in 2020. As part of the interview, There are chances to ask some of the questions on JMS area if you ...

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HelloWorld.java – Java Program to Print Hello World

Java Beginners’ first example program to print Hello World. 1. Introduction In this tutorial, We’ll learn how to print “Hello World” in java. This is called as first java program to beginners to the programming language. If you understand each and every word in this program then you are good to start learning java concepts. 2. Java Hello World Program ...

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Java puzzlers from OCA part 2

Welcome to the second part of Java Puzzlers from OCA. In this part we will see an interesting case about the underscore separator in numeric literals which came with Java 7. In the below class you can see the separator underscore in the decimal literal. Also notice the class compiles now without a problem. Octal is the octal representation, binary ...

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Java puzzlers from OCA part 1

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I’m reading Oracle Certified Associate Java SE Programmer book from Mala Gupta in my spare time and I’m surprised with some of the new things I learn. Some of the time they really don’t make sense, some of the time they make sense but really surprising to see. So in this article series, I wanted to share them as “Java ...

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AWS Alarms for Application Errors

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Monitoring is key for any real-world application. You have to know what’s happening and be alerted in real time if something wrong is happening. AWS has CloudWatch for that, and gives you a lot of metrics automatically. But there are some that you have to define yourself. And then you need to define proper alarms. Here I’ll focus on hour: ...

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Long Live ETL

Extract transform load is process for pulling data from one datasystem and loading into another datasystem. Datasystem involved are called source system and target system. Shape of data from source system does not match to the target system, so some conversion is required to make it compatible and that process is called transformation. Transformation is made of map/filter/reduce operations. To ...

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Invoking Different Secure WCF SOAP Services using SoapUI – Basic Authentication, Part II

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In the first post of this series, we created a basic authentication service to be invoked using SoapUI. Therefore, in this second post, we will demonstrate step by step how to use this tool to successfully invoke this kind of service. 1-Basic WCF SOAP using SoapUI – Create New SOAP project Firstly we need to create a SoapUI project and inthe “Initial WSDL”, add ...

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