If you would like to contribute, here are some of the tasks we have planned. Please let us know if you are starting one. Implement and test the methods allowing queries on Enumerables. The methods are ...

Classes and objects in Java must be initialized before they are used. You’ve previously learned that class fields are initialized to default values when classes are loaded, and that objects are ...

A monthly overview of things you need to know as an architect or aspiring architect. Unlock the full InfoQ experience by logging in! Stay updated with your favorite authors and topics, engage with ...

A callback operation in Java is one function that is passed to another function and executed after some action is completed. A callback can be executed either synchronously or asynchronously. In the ...

This template generates a Spring Cloud Stream (SCSt) microservice. It uses version 3 of SCSt which uses function names to configure the channels. See the reference. The generated microservice is a ...

The release of Java SE 15 in Sept 2020 will introduce "sealed classes" (JEP 360) as a preview feature. A sealed class is a class or interface which restricts which other classes or interfaces may ...