Java includes various mechanisms for iteration, including index (for iterating over an array), cursor (for iterating over the results of a database query), enumeration (in early versions of Java ...

Java’s collections like arrays and lists are foundational building blocks. Functional programming techniques are at times the ideal way to work with these collections. This article gives a tour ...

Donald Raab, creator of GS Collections, open sourced by Goldman Sachs in 2012, reveals the power of that framework, and how together with Lambda expressions, it sprinkles Java with some of the ...

However, there are collection classes in Java that act like a Java array but resize themselves automatically. Any class that extends the List interface expands dynamically. Java arrays do not expand ...

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 ...