What is required to use "Scanner input = new Scanner(system.in);" in Java?

To utilize the statement "Scanner input = new Scanner(System.in);" in Java, it is essential to import the Scanner class from the java.util package. This is a fundamental step because, by default, Java does not automatically recognize classes that are not part of the java.lang package unless they are explicitly imported. The Scanner class is vital for obtaining user input from various sources, including the standard input stream represented by System.in.

Importing the necessary classes allows the Java compiler to understand that you intend to use the Scanner class, enabling you to create an instance of it for reading input. This import statement is a basic convention in Java programming and is foundational to writing effective code that deals with user interaction.