java.lang.ref: A collection of reference-related language classes, such as SoftReference and ReferenceQueue, organized in the ref sub-subpackage of the java package’s lang subpackage ...

Abstract classes and interfaces in Java serve fundamentally different purposes. Learn the differences between these Java language elements and how to use them in your programs.

To take String input from the user with Java’s Scanner class, just follow these steps Import java.util.*; to make Java’s Scanner class available Use the new keyword to create an instance of the ...