In this quick tutorial on how the Java HashMap works internally, you'll learn the following aspects: The basic syntax of the Java HashMap. How keys, values, hash codes and node references interact.

The Java syntax does not so easily lend itself to the level of fluency required for a DSL, and so creating internal DSLs using Java is challenging. The Java platform’s tool support for creating ...

How to add multiple values per key to a Java HashMap. It seems like an oversight for the standard Java API not to have a collection class that allows a key to have multiple values. If this is an ...