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 ...

Method overloading in Java allows you to define multiple methods with the same name in a class, but with different parameter lists. This feature enhances code readability and flexibility. Here, we'll ...

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 ...

To create byte code that can be executed on any Java Virtual Machine, Java applications are compiled. Because Java code can be safely executed on any platform, regardless of the operating system or ...

Cheat Sheets – Java: Object-Oriented Programming – which includes Java objects' state and behavior, Java dot notation, Constructor Method in Java, Creating a new Class instance in Java, Reference Data ...