System is a class in the java.lang package . The out is a static member of the System class, and is an instance of PrintStream . The println is a method of PrintStream. This method is overloaded to print message to output destination, which is typically a console or file.
Hereof, what is nextInt () in Java?
The java.util.Scanner.nextInt() method Scans the next token of the input as an int.An invocation of this method of the form nextInt() behaves in exactly the same way as the invocation nextInt(radix), where radix is the default radix of this scanner.
Why do we use scanner in Java?
Scanner Class in Java. Scanner is a class in java.util package used for obtaining the input of the primitive types like int, double etc. and strings. To create an object of Scanner class, we usually pass the predefined object System.in, which represents the standard input stream.
What does scanner system in do?
Lets break it down. Scanner: The Scanner class is a class in java.util, which allows the user to read values of various types. System.in: An InputStream which is typically connected to keyboard input of console programs. Scanner S=new Scanner(System.in)