For a Core Java Developer , Questions around following topics should be good.
- OOPs Concepts
- Abstract Classes and Interfaces
- Constructors
- Overloading and Overriding
- File IO and Serialization
- Collections - List , Map , Set - Search, Sorting Algorithms
- Access Specifiers
- Exceptions - Checked , Unchecked
- Generics
- Java Keywords - static , final , volatile, synchronized , transient, this , super etc.
- JVM and Memory Management
- MultiThreading and Synchronization
- HashCode and Equals
- Design Patterns
- Dependency Injection
- Reflection API
- Java 8 features - Lambda Expressions , Default Methods.
If Someone is being hired for a Network / Distributed Application, Following questions can be asked
- Communication Protocols like IP, HTTP, TCP, FTP,UDP
- Synchronous vs Asynchronus Communication
- Sockets
- Technologies like RMI, RCP
- Message Queues
- Interface APIs - JMS, JDBC
- ORMs - EJB ( Session Beans , Entity beans, MDB's ), Hibernate
If someone has to work on a Java based web application then he can be asked questions around following topics -
- JSP / JSF
- Servlets / filters / Interceptors
- Session Management / Transaction Management
- JNDI
- Architectures - n Tier, MVC
- Web Frameworks like Struts / Spring
- Service Oriented Architecture / Web Services - SOAP / Rest
- Web Technologies like HTML, CSS, Javascript and JQuery
- Markup Languages like XML and JSON.
- Application and Web Servers
- Caching
- Cloud service (AWS, SoftLayer, BlueMix)
If someone has to work on Java UI, then questions around following can be expected -
- Applets
- Frameworks like Swing, SWT, AWT
- Advanced Frameworks like JavaFX
Every Developer is expected to have knowledge regarding the Data structures. If you are applying positions for a product / system development companies, lot stress will be given to these Questions.
- Arrays , Linked List
- Search Algorithm and their complexity
- Sorting Algorithms and their complexity
- Trees , Graphs
Every Java Developer is expected to have Database Knowledge so questions around following concepts can be asked
- Database Drivers
- Normalization / Denormalization
- Isolation Levels
- Transaction Management
- SQL Tuning / Optimization
- SQL Queries - Inner Outer Joins, Group By , Having
- Prepared Statement and their benefit.
- Indices , Views
- Stored Procedures
- Triggers
- Cursors
Moreover questions around Tools, Methodologies, Processes can be asked -
- Development Tools - Eclipse / RAD
- Design Tools and Diagrams
- Configuration Management Tools like SVN, Clearcase etc
- Defect Management
- Build Tools like Maven, Ant etc
- Testing - Unit Testing, JUnit , Black box , White Box
- Development Methodologies - Agile / Waterfall / Iterative
- Requirement Analysis
- Release Management
and then Interviewer can also ask open ended questions.
- Which feature would you most like to see added to Java?
- Which feature would you most like to be removed from Java?
- Have you gone through some of the features introduced with latest Java version ?
- Do you think removing Perm gen completely in Java 8 is a good idea ?
- How would you go about debugging an exception ?
- How does Java differ from other programming languages you've worked with?
- How do you document your code ?
- If you are given a choice to implement something using javascript or Java ? Which technology will you use and why ?
- What Design Patterns you have used in your project ?
- Which Web application Framework - Struts, Spring do you like and Why ?
- Which IDE, Source Control,Build tool you think is best ?
- Which development methodology you would like to work with ?
- Do you think using open source servers like Apache , Tomcat is a better idea than paid servers ?
- Which testing tools do you use ?
- What are the most important performance issues in Java web applications
- What are the most important technologies / specifications in Java EE 6?
- Do you like pair programming ? What's your views on Agile methodology comparing to SDLC ?
Here are few links that might help.
No comments:
Post a Comment