A set of Java flow control related interview questions to help you prepare.

Understand JNI and the ability to bridge Java Bytecode with native C++.

The Java compiler is able to pre-calculate certain values for us at compile time. This allows us to use some variables with expressions that must be constant, and leads to some runtime efficiencies.

Learn about different Map implementations that accept all case variations of a String as the same key

Learn how to configure thread pools on different java web application servers

A quick example and explanation of the copyValueOf API of the standard String class in Java.

A quick and practical overview of Project Amber for Java.

Discover Activeweb - a full stack web framework from JavaLite.

Learn about the time complexity for common operations on Java collections

Learn how to concatenate two arrays in Java using the standard Java API and commonly used libraries

A quick and practical guide to the Bag collection from Apache Commons.

Backward compatibility and Javac, Micronaut hipster, faster Graal, life after SecurityManager, API gateway in K8S, and Bitcoin's energy problem!

Explore the concept of Java interfaces and learn how Java uses them to implement polymorphism and multiple inheritance.

Interested to learn about Read A File? Check our article explaining how to read the file in older java and new JDK 8 version.

Quick guide to how to two ways of running a shell command in Java, both on Windows as well as on UNIX.

Learn how to securely hash passwords in Java and why MD5 is so insecure.

Explore how to map collections using MapStruct.

Learn how to convert certificates and private keys from a Java KeyStore into PEM format using keytool and openssl.

Interested to learn about Collectors.groupingBy()? Check our article explaining how to group by multiple fields using Streams.