This Java code review checklist is not only useful during code reviews, but also to answer an important Java job interview question, Q. How would you go about evaluating code quality of others’ work? This can judge a candidate’s real experience & … Read more ›...
Don’t get overwhelmed by this activities list. This proves why employers favor experience to just academic qualifications alone. It also emphasizes the fact why good technical skills must be complimented with good soft skills and right attitudes get things done as a software developer. I also vividly remember my first...
Q1. What is DevOps? A1. Traditionally the developers & IT operations work in silos where the developers code, build, test & release the software artefacts and the IT operations deploy & monitor the applications. In DevOps a unified team apply the CI/CD practices with automation tools like Jenkins/Bamboo, … Read...
Firstly, the systems need to be designed well. For example, High level & low level system design considerations for read heavy systems vs High level & low level system design considerations for write heavy systems. The performance focus must start from high level design. Q1. … Read more ›...
Unlike J2EE, Java EE 6 consists of annotated classes without any dependencies on the platform. This approach eliminates the need to separate business logic from the infrastructure and makes the majority of J2EE patterns and best practices superfluous. The following J2EE design patterns can be obsolete: — Service Locator (Use...
Concurrency is very important in any modern system, and this is one topic many software engineers struggle to have a good grasp. The complexity in concurrency programming stems from the fact that the threads often need to operate on the common data. Each thread has its own sequence of execution,...
Q1 Why use mock objects in unit testing? A1 Unit testing is widely accepted as a “best practice” for software development. When you write an object, you must also provide an automated test class containing methods by calling its various public methods with various parameters and making sure that the...
Q1. Why are there so many security terminologies & standards compared to tradional security systems? A1. In traditional authentication (i.e. identify yourself) / authorisation (i.e. do you have access to a specific resource?), each application had its own separate database to store authentication credentials like user names, … Read more...
Q1. What are the key considerations in processing large files?
A1. Before jumping into coding, get the requirements.
#1 Trade-offs among CPU, Memory Usage & Disk I/O
Processing a file involves reading from the disk, processing (e.g. parsing an XML and transforming), and writing back to the disk.
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Q1. What is an LDAP server? And what is it used for in an enterprise environment? A1. LDAP stands for Lightweight Directory Access Protocol. This is an extensible open network protocol standard that provides access to distributed directory services. … Read more ›...
Q1. What is the difference between performance and scalability? A1. The performance and scalability are two different things. For example, if you are in the business of transporting people in a van, the performance is all about utilizing more powerful engine to transporting your people quicker to their destination. …...
6 tips to go about writing loosely coupled Java applications useful not only for talking the talk in Java job interviews, but also to build maintainable Java applications. Loose coupling in microservice architecture means microservices should know little about each other, and any change to one service should not affect...
Interviewers often judge your experience with debugging skills. For example, debugging jar hell issues, debugging SSL issues, debugging hibernate issues, debugging transaction management issues, etc. All these are covered in detail under the key areas “Key Area – Debug xxxx”
How will you debug thread-safety issues in Java?…
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