Java 8 interview questions & answers focusing on Functional Programming. Good handle on Java OOP concepts and FP concepts are very important NOT only from writing quality code perspective, but also from job interviews perspective to be able to do well in written tests & technical interviews.
Q1. Can you explain your understanding of Functional Programming (FP)?…
Here are 7 rules to remember regarding Java Generics to understand Generics and handle interview and coding questions on Core Java. Object <– Fruit <– (Orange, Mango, etc siblings) Rule…
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Q1. How would you go about choosing the right data types for your application?
A1. Java is what is known as a strongly typed language. This means Java only accepts specific values within specific variables or parameters. Some languages, such as JavaScript, PHP, and Perl are weakly typed languages.…
Java does not have a sizeof operator like C++ does. Java uses automatic memory management known as the Garbage Collection, hence it is not that important to evaluate size of…
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A Trade goes through 3 state changes – placed, filled, and settled. Let’s solve this simple problem using both OOP & FP approaches.
Place –> Fill –> Settle
Java Collection interview questions and answers and Java String class interview questions and answers are must know for any Java developer as these two APIs are the most frequently used in your Java application code. You can’t write any decent Java application without these 2 APIs.
Q1. What will be the output of the following code snippet?…
Java interview questions & answers on multithreading scenarios to judge your experience in building applications with concurrency in mind. Q1. Can you give some scenarios where you built concurrent systems?…
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Choosing the right data structure is vital to get the job done with proper space vs performance trade-offs. Q1. What are the common data structures, and where would you use…
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A stream is an infinite sequence of consumable elements (i.e a data structure) for the consumption of an operation or iteration. Any Collection<T> can be exposed as a stream. It…
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This is a companion post to 8 Java Memory Management Interview Q&A demonstrating a memory leak scenario step by step with jvisualvm, which is a free profiling tool that gets…
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