In the Java API, classes are grouped into packages. ArrayList is in the package called java.util, which holds a pile of utility classes. You have to know the full name* of the class you want to use in ...

Loops are used to repeat a block of code until a certain condition is met. In Java, there are three types of loops: for loop, while loop, and do-while loop. In this example, we're using a for loop to ...

This cheat sheet, from Princeton University's Introduction to Programming in Java course, makes a great reference for the basics you need to know, like structure, input/output, data types, and ...

Royce Williams , who works for cyber security company Alaskan Cyber Watch , has released a cheat sheet about the zero-day vulnerability 'Log4Shell ' discovered in Java's log output library Log4j.