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This question was recently asked at 'HCL Technologies'.This question is still unanswered. Can you please provide an answer. | ||||
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Ans. [Open Ended Answer] Possible Answer - We are using Agile. We have daily standups, Bi weekly Backlog Grooming , Planning and Retrospective, We have a 2 week sprint and We use Jira for Scrum Management. We are using Java 8, Spring Boot, JSF , Apache Kafka , Soap as well as Rest Services. | ||||
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Like Discuss Correct / Improve   Asked in 9 Companies | ||||
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This question was recently asked at 'Spillman Technologies'.This question is still unanswered. Can you please provide an answer. | ||||
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This question was recently asked at 'iOPEX Technologies'.This question is still unanswered. Can you please provide an answer. | ||||
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This question was recently asked at 'iOPEX Technologies'.This question is still unanswered. Can you please provide an answer. | ||||
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Ans. The garbage collection is a facility wherein a program runs on the Java Virtual Machine which gets rid of objects, which are not being used by a Java application anymore. It is a form of automatic memory management and recollection. | ||||
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Like Discuss Correct / Improve   Asked in 4 Companies | ||||
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This question was recently asked at 'HCL Technologies'.This question is still unanswered. Can you please provide an answer. | ||||
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Ans. The most effective and acceptable reasons for leaving your current job should be positive e.g. moving forward in your life or career | ||||
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Like Discuss Correct / Improve   Asked in 21 Companies | ||||
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This question was recently asked at 'Spillman Technologies'.This question is still unanswered. Can you please provide an answer. | ||||
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Ans. Possible Answer - Java Developer | ||||
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Like Discuss Correct / Improve   Asked in 5 Companies | ||||
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This question was recently asked at 'Spillman Technologies'.This question is still unanswered. Can you please provide an answer. | ||||
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This question was recently asked at 'One Click Retail,Spillman Technologies'.This question is still unanswered. Can you please provide an answer. | ||||
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This question was recently asked at 'Spillman Technologies'.This question is still unanswered. Can you please provide an answer. | ||||
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This question was recently asked at 'Spillman Technologies,Motorola Solutions'.This question is still unanswered. Can you please provide an answer. | ||||
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This question was recently asked at 'NEC Technologies'.This question is still unanswered. Can you please provide an answer. | ||||
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This question was recently asked at 'NIIT Technologies'.This question is still unanswered. Can you please provide an answer. | ||||
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Ans. Warm up time for certain technologies like Java ( JVM Warmup ) Performance Size of Deployable ( Bigger size packaging should go in S3 ) | ||||
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Like Discuss Correct / Improve  serverless technologies  aws lambda  aws serverless computing  amazon cloud serverless computing  amazon lambda Asked in 1 Companies | ||||
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Ans. AWS Lambda is an event-driven, serverless computing platform provided by Amazon as a part of Amazon Web Services. It is a computing service that runs code in response to events and automatically manages the computing resources required by that code. It was introduced in November 2014. | ||||
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Like Discuss Correct / Improve  amazon lambda  aws  aws lambda  aws serverless computing  amazon cloud serverless computing  amazon lambda Asked in 1 Companies | ||||
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Ans. The Java collections framework (JCF) is a set of classes and interfaces that implement commonly reusable collection data structures. Although referred to as a framework, it works in a manner of a library. The JCF provides both interfaces that define various collections and classes that implement them. | ||||
Sample Code for Map Sample Code for HashMap Sample Code for Treemap Sample Code for set Sample Code for hashset Sample Code for treeset Sample Code for list Sample Code for arraylist Sample Code for linkedlist Sample Code for queue Sample Code for priorityqueue Sample Code for concurrenthashmap Sample Code for vector Sample Code for stack | ||||
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Like Discuss Correct / Improve  collections Asked in 9 Companies basic   frequent | ||||
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Ans. Iterators in java are used to iterate over the Collection objects. Fail-Fast iterators immediately throw ConcurrentModificationException if there is any addition, removal or updation of any element. Fail-Safe iterators don't throw any exception if a collection is structurally modified while iterating over it. This is because, they operate on the clone of the collection and not on the original collection. | ||||
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Like Discuss Correct / Improve  ail fast   fail saf Asked in 9 Companies intermediate | ||||
Frequently asked in Genpact. | ||||
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Ans. Its is the process of creating exact copy of an object being cloned. In Object class one native method called clone() is there which is meant for Shallow Cloning of Object. Shallow cloning means bitwise copy of an object.In case of primitive data type it will create an exact copy of primitive values as well as variables but if the object contains any reference of an object then it will not copy the referenced object rather it will create the copy of reference variable and assigned it to the old object. | ||||
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Like Discuss Correct / Improve  cloning Asked in 3 Companies basic   frequent | ||||
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Ans. There are four main OOP concepts in Java. These are: Abstraction. Abstraction means using simple things to represent complexity. We all know how to turn the TV on, but we don?t need to know how it works in order to enjoy it. In Java, abstraction means simple things like objects, classes, and variables represent more complex underlying code and data. This is important because it lets avoid repeating the same work multiple times. Encapsulation. This is the practice of keeping fields within a class private, then providing access to them via public methods. It?s a protective barrier that keeps the data and code safe within the class itself. This way, we can re-use objects like code components or variables without allowing open access to the data system-wide. Inheritance. This is a special feature of Object Oriented Programming in Java. It lets programmers create new classes that share some of the attributes of existing classes. This lets us build on previous work without reinventing the wheel. Polymorphism. This Java OOP concept lets programmers use the same word to mean different things in different contexts. One form of polymorphism in Java is method overloading. That?s when different meanings are implied by the code itself. The other form is method overriding. That?s when the different meanings are implied by the values of the supplied variables. See more on this below. | ||||
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Like Discuss Correct / Improve  oops  oops concepts Asked in 16 Companies basic   frequent | ||||
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Ans. JDK(Java Development kit) = Development Kit comprising of JVM , library and development tools for developers JRE (Java Run time Environment) - Comprise of JVM and set of libraries JVM(Java Virtual Machine) = Interpreter which reads the .class file line by line. When we install JDK, JRE also get installed so we can write,compile and excute our code. Used by developer. Without JDK we can only execute the program using JRE. | ||||
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Like Discuss Correct / Improve  jvm  jre  jdk  jvm vs jre vs jdk Asked in 4 Companies | ||||
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Ans. Abstraction is a process of hiding the implementation details and describing only the functionality to the user. | ||||
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Like Discuss Correct / Improve  bstraction  oops concepts  oops principle Asked in 22 Companies | ||||
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This question was recently asked at 'Huawei Technologies'.This question is still unanswered. Can you please provide an answer. | ||||
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Ans. Here are the differences between Agile and Waterfall Methodology: The software development process is divided into different phases in the Waterfall model while Agile methodology segregates the project development lifecycle into sprints Waterfall is a structured software development methodology, and often times can be quite rigid, whereas the Agile methodology is known for its flexibility According to the Waterfall model, software development is to be completed as one single project, which is then divided into different phases, with each phase appearing only once during the SDLC. However, the Agile methodology can be considered as a collection of many different projects, which are nothing but the iterations of the different phases focusing on improving the overall software quality with feedback from users or the QA team If you want to use the Waterfall model for software development, then you have to be clear with all the development requirements beforehand as there is no scope of changing the requirements once the project development starts. The Agile methodology, on the other hand, is quite flexible, and allows for changes to be made in the project development requirements even after the initial planning has been completed All the project development phases such as designing, development, testing, etc. are completed once in the Waterfall model while as part of the Agile methodology, they follow an iterative development approach. As a result, planning, development, prototyping and other software development phases can appear more than once during the entire SDLC One of the major differences between Agile and Waterfall development methodology is their individual approach towards quality and testing. In the Waterfall model, the Testing phase comes after the Build phase, but, in the Agile methodology, testing is typically performed concurrently with programming or at least in the same iteration as programming While Waterfall methodology is an internal process and does not require the participation of customers, the Agile software development approach focuses on customer satisfaction and thus, involves the participation of customers throughout the development phase The Waterfall model can be regarded as a stringently sequential process, however, the Agile methodology is a highly collaborative software development process, thereby leading to better team input and faster problem solving The Waterfall model is best suited for projects which have clearly defined requirements and in which change is not expected at all, while Agile development supports a process in which the requirements are expected to change and evolve. Thus, if you are planning to develop a software that would require frequent overhauls and has to keep up with the technology landscape and customer requirements, Agile is the best approach to follow The Waterfall model exhibits a project mindset and lays its focus strictly on the completion of project development, while Agile introduces a product mindset that focuses on ensuring that the developed product satisfies its end customers, and changes itself as the requisites of customers change | ||||
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Like Discuss Correct / Improve  sdlc  agile  adlc vs agile Asked in 3 Companies | ||||