Learn how to use the Command pattern to encapsulate requests as objects that you can execute alone or in sequence in your Java programs.

The pattern matching feature in Java lets app developers handle complex data structures such as abstract layers and class hierarchies. Here's how it works.

Print and format a table with printf Sometimes it’s nice to format the output of a console based Java program in a friendly way. The java.lang package has no built-in table generators, but you can ...