Core Java Interview Questions and Answers with Examples

Budget $30 - $250 USD
Bids 27
Average Bid $167

I need 250 interview questions for Java core technology. Questions should be practical one and needs to be given along with appropriate answers. If example code is needed to explain the concept then that code needs to be given along with the answers.

Strict Note: There are already plenty of question and answers available on the net, but we do not want to replicate same set of questions and if content of questions matches with any existing website then work will not be accepted or revised, and consequently project will be rejected. So if you have real working experience with core java and you can produce these questions and answers based on your experience then I welcome you, otherwise I request not to bid for the project.

Your question flow should be like an interviewer starts with basics and type of questions he/she asked.
Here is sample questions and answers:
Q: What is Java?
A: Java is a high-level programming language originally developed by Sun Microsystems and released in 1995.

Q: What are then supported platforms for Java?
A: Java runs on a variety of platforms, such as Windows, Mac OS, and the various versions of UNIX, like Redhat Linux, CentOS, Ubuntu etc.

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  • albuhubaalbuhuba Profile Picture

    albuhubaalbuhuba

    Cluj Napoca,  Romania

    I have been working in Java and Website Development for the past years and have great experience with them. I also have experience as a Graphic Designing Designer as well as experience in PHP Index, Graphic Design. I am ready to be hired and start working on your projects today.

    PHP, Java, Website Design, and Graphic Design

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    rams4java

    Bangalore,  India

    Excellent JAVA/J2EE programming skills in developing and managing the project effectively. Had closer to 10 years of experience in developing all j2EE applications along with core applications.

    PHP, C Programming, Java, and JSP

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    shubham20

    Mumbai,  India

    Having 3 yr of professional exp in Java, J2EE, JSP, Spring, Hibernate, Struts, JSF, SQL, Unix. I have Worked with MNC such as wipro Technologies and also having 3 yrs of exp in Banking domain and banking clients such as CITI, SBSA, Charles Schwab-USA

    C Programming, Java, JSP, and Visual Basic

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    PehlajRai

    Karachi,  Pakistan

    I have around 4 years professional experience of working in different programming languages. I have developed a wide range of applications using Android, Java, HTML5, PHP, Javascript, jQuery. Technical Skills Android: Glide, Picasso, Volley, Recycler View, Robotium, Crashlytics, SDP, Google Places APIs, Crash Handling, Image Compression, Apk Decompilation, Obfuscation, Material Design, Design Library, GCM/System Notifications, Google Analytics v3.0, Fragments, Multi-screen Support, ActiveAndroid, GSON, AsnycTask, JSON/GSON, Graph-view, Google Maps V2, Location API, Facebook API. Databases: SQLite, MySql, PostGres, Oracle. Java: J2SE, JDBC, iText, J2EE (Servlets, JSP, JSF 1.2/2.2, JOOQ, Hibernate, PrimeFaces, RichFaces, iText, JSTL, Hibernate, Jasper Reports), JDBC JavaScript​: jQuery, JSON, Ajax, , DOM scripting Databases: MySQL, Oracle, PostGreSQL SQLite Tools: Android Studio, Eclipse, GitHub, Source Tree, SQL Power Architect

    ASP, Java, JSP, and Javascript

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    phanhuutri

    Ho Chi Minh,  Vietnam

    Hello, I'm experts with 8 years experience on: JOOMLA: + Install and config the project + Migrate & Upgrade: Are you using the website without joomla or with joomla and you want to migrate or upgrade to joomla with higher version? I can do this very fast and exactly for you. + Components: customise and create new component with MVC struture + Module: Customise and create new module + Plugin: Customise and create new plugin + Template: Create, adjust the template (include design or not) with tableless joomla design (CSS / DIV) + Advanced SEO (sea rch engine optimization DR UPAL: + Install and config the drupal project + Module: Customise and create new plugin with MVC structure + Template: Create, adjust the template (include design graphics or not) with tableless drupal design (CSS / DIV) + Migrate & Upgrade: Are you using the website without drupal or with drupal and you want to migrate or upgrade to drupal with higher version? I can do this very fast and exactly for you. + Advanced SEO (search engine optimization) MAGENTO: + Install and config with magento project + Module: Customise and create new module with MVC structure + Template: Create, adjust the template (include design graphics or not) with tableless magento design (CSS / DIV) + Migrate & Upgrade: Are you using the website without magento or with lower version of magento and you want to migrate or upgrade to magento with higher version? I can do this very fast and exactly for you. + Advanced SEO (search engine optimization) WORDPRESS: + Install and config the project + Plugin: Customise and create new plugin with MVC structure + Template: Create, adjust the template (include design graphics or not) with tableless wordpress design (CSS / DIV) + Migrate & Upgrade: Are you using the website without wordpress or with wordpress and you want to migrate or upgrade to wordpress with higher version? I can do this very fast and exactly for you. + Advanced SEO (search engine optimization) I can do that for you, if you like and I'm glad I have a chance to work with you all. Trust me for your project and you will see the value of difference! Thanks for your time, Best regards, phanhuutri

    PHP, ASP, Java, and JSP

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    rohitsinha22

    Kolkata,  India

    We are a team of 20 professional experienced PHP, .NET, ajax, HTML5, iPhone, androind, Java developers and working on social networking, real estate, ecommerce websites, iPhone and android apps.

    PHP, ASP, Javascript, and .NET

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    Tejast5

    Baroda (Vadodara),  India

    Having approximate 4+ years of experience as Java developer and working on some huge projects have equipped me in multiple technical skills. Having considerable experience of technologies like Java,J2EE, Hibernate,Spring(multiple modules),Struts 2, Restful and Soap Web services,Junit with my technical skills I have made contribution in designing domain model and complex big scale business algorithm. I believe in quality work and commitment. Look forward to work with you.

    Java, JSP, Javascript, and XML

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    gaurock

    Chandigarh,  India

    oOver Five years of progressive experience in all the phases of software development lifecycle that includes Requirements Analysis, Design, Development, Manual Testing, Automation testing using Selenium and Deployment of software applications and Project management. oExtensive project implementation skills using both core and advanced Java technologies (EJB , Servlets , JSP , Struts , JNDI , JMS , JDBC , RMI , XML , XSLT , SAX , DOM , JAXB, Selenium RC and Webdriver) with various middleware technologies o3 years of diverse experience in Information Technology with emphasis on Software Quality Assurance & Automation Testing oIn depth Knowledge of Selenium tool and its architecture. oHands on experience in building selenium automation testing frameworks- datadriven, keyword driven and hybrid. oHands-on experience with J2EE Architecture, Application servers and web servers and a wide variety of development tools (IBM Web Sphere 5.x/4.0/3.5 , WSAD 5.x/4.0, Web logic 8.1/7.1, Eclipse 3.1, Tomcat) oExtensive working knowledge of Java Servlets with database connectivity using JDBC , ODBC , Java Mail , JSP , JavaScript , HTML oExcellent work experience with XML/Database mapping , writing SQL queries , Stored Procedures , Triggers with major Relational Databases Oracle 9i/8i and MS SQL Server oGood understanding of UML concepts, RUP, Object Oriented Software Design Patterns and MVC architecture, SOAP, Web Services, UDDI. oExtensive experience in Internet technologies HTML, DHTML, JavaScript XML/XSL oExtensive experience using EJB3.0 and JPA. oGood communication skills , problem solving skills and work ethics oSelf motivated with ability to work independently and in the team environment oExpertise in Shipping Domain,Travel Domain,Web Domain.

    Java, JSP, Javascript, and XML

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    enmesh

    Bhopal,  India

    Set for Quality work.

    Java, .NET, Graphic Design, and Translation

  • samitXI Profile Picture

    samitXI

    New Delhi,  India

    In line with my continued interest and performance in Computer Science and Engineering I have decided to build up my career in the professional field. I did from IIIT Allahabad in IT discipline. So, I would like to show my immense aspiration to become a quick learner and to prove myself as a sincere and energetic person through extensive hard working and integrity. i always try to make my clients happy. I have 5 years experience in following skills : - Mathematics - Android, IPhone app application. - Unity3D game programming - Cocos2Dx game programming. - Multimedia design. - C/C++ application programming. - Java application programming. - C# application Programming. - web development - .NET programming etc... Thanks, Amit

    PHP, ASP, C Programming, and Java