Answer Posted / rahul yadav

System.out.println( );

1.The System class contains several useful class fields and
methods. It cannot be instantiated.
2.System class has field out of type PrintStream class.
3.println() is a method in PrintStream class.
public static final PrintStream out
The "standard" output stream. This stream is already open
and ready to accept output data. Typically this stream
corresponds to display output or another output destination
specified by the host environment or user.

For simple stand-alone Java applications, a typical way to
write a line of output data is:
System.out.println(data)

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