Q1. What types of messaging paradigms are provided by JMS? A1. Point-to-Point: provides a traditional queue based mechanism where the client application sends a message through a queue to typically one receiving client that receives messages sequentially. A JMS message queue is an administered object that represents the message destination...
Java Collections interview questions and answers and Java String class interview Q&As are must know as you can’t write any decent Java application without these 2 APIs. This post focuses on Java Collection interview Q&As on differences between X and Y based on the Java Collection Framework (i.e. … Read...
Q1. What is an XML? A1. XML stands for eXtensible Markup Language. XML is a grammatical system for constructing custom markup languages for describing business data, mathematical data, chemical data etc. XML loosely couples disparate applications or systems utilizing JMS, … Read more ›...
Q1. What is Jenkins? A1. Jenkins is an open source CI/CD (i.e. Continuous Integration & Continuous Delivery/Deployment) server written in Java with over 2000 plugins (E.g. Maven, Git, Amazon EC2, Docker, Ansible, etc) for various development, testing and deployment tasks. Refer to Jenkins Plugin Index for the plugins and the...
Q1. What are the typical roles and responsibilities of an agile core team? A1. The Product Owner represents the stakeholders and is the voice of the customer. He or she is accountable for ensuring that the team delivers value to the business. The Product owner writes typically the user stories,...
Q01. What is Amazon S3 storage? A01. S3 stands for Simple Storage Service, which provides storage through web service interfaces. Unlike the other storage systems like Unix file system, HDFS (i.e. Hadoop Distributed File System), etc which are based on having folders and files, the S3 is based on a...
Let’s look at scenarios or problem statements & how would you go about handling those scenarios in Java. These scenarios interview questions will judge your Java experience. Full list of Java scenarios based interview questions are covered at Judging your Java experience via scenarios based interview Q&As.
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This extends 18 Java scenarios based interview Q&As for the experienced – Part 1 #9 Single Sign-On Q09. Scenario: You have a number of applications like cash, mortgages, investments, etc where a user has to login separately into each system. For example, … Read more ›...
Q125. What is Apache Zookeeper & where can you use it? A125. Distributed applications like HBase, Solr, Kafka, etc run services on multiple nodes (i.e. computers) for scalability (i.e more nodes can be added) & redundancy (i.e. several nodes provide the same service & if one node is down another...
Extends: 1. Asynchronous processing in Java real life examples – part-1. Example 3: Trade execution reports are received & processed asynchronously If you are working in an online trading application, you may want the functionality to queue trades and process them when the stock market opens. … Read more ›...
Q: Implement an in-memory cache in Java without using any frameworks. The basic requirements are – The TTL (Time To Live) for the cache items are ~10 seconds [just for demo]. – The system has plenty of memory. – … Read more ›...
Java coding interview questions are very common in job interviews. Good coding skills are essentials for passing the peer code reviews with flying colours. Here are 17 coding tips with Java examples. Tip #1: If you are asked to write a function or code, … Read more ›...
SQL interview Questions & Answers is a must for any developer as all non-trivial applications need to talk to a database with CRUD operations. Q3 – Q15 are very popular with the interviewers. If you want to quickly practice your SQL skills try DB Fiddle or install MySQL locally as...
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