When developing Java applications, it is easy to get used to invoking logging on the provided logger via its log level-specific methods. For example, Log4j‘s Logger provides methods such as ...

Java Supplier interface tutorial. As you can see, the code for the class that implements Java’s Supplier interface is fairly simple. The only requirements are the class declaration and the ...

Traditionally this means using a logging framework like log4j or the Java Logging API, and then writing and maintaining all necessary log statements manually. This is very tedious and error-prone ...

If you want to master functional programming, the best place to start is with the Java Function interface.This example will show you four different ways to implement this functional interface in your ...