Get started with java.util.concurrent, with Jeff Friesen’s detailed introduction to the Executor framework, synchronizer types, and the Java Concurrent Collections package.

The Date class, found in the java.util package, encapsulates a long value representing a specific moment in time. One useful constructor is Date(), which creates a Date object representing the ...

Functional programming with a Java Consumer Sometimes programmers new to lambdas and streams get intimidated by the components defined in the java.util.function package, so I always like to remind ...

The CustomerDemo application uses common Java classes from java.util and java.lang packages. For example, it uses java.util.Hashtable to store the relationship between customers and countries.