One of the nasty little traps a Java developer can run into occurs when Collection.contains(Object) is not used with appropriate understanding. I demonstrate this potential trap in this post.

An academic paper [PDF] published in 2018 identified a code snippet Lundblad posted on the site as the most copied Java code taken from StackOverflow and then re-used in open source projects.

Learn how to code in Java on a Mac: Compiling Java programs from Terminal in OS X Allow External content This article contains external content in this section.