Java out.println() how is this possible?

Question

I\'ve seen some code such as:

out.println(\"print something\");

I tried import java.lang.System;

but it\'s not working

Answer 1

out is a PrintStream type of static variable(object) of System class and println() is function of the PrintStream class.

class PrintStream
{
    public void println(){}    //member function
    ...
}

class System
{
    public static final PrintStream out;   //data member
    ...
}

That is why the static variable(object) out is accessed with the class name System which further invokes the method println() of it's type PrintStream (which is a class).