Create packages, import packaged classes and interfaces into your programs, move packages, and encapsulate them in jar files.

Why does Java's standard class library contain empty interfaces like Cloneable and Serializable? Find out why in this sixth installment in the "Object-oriented language basics" series. You'll also ...

There is a reason why Java method modifiers exist. If you call public methods internally and don't understand why, your developers could face major class issues.