Java 6 Illuminated: An Active Learning Approach, 2nd Edition

case, the static data is constant, so the client is unable to change it. For the

client, directly accessing the class constant is easier and faster than calling a

method.

3.12 Using System.in and System.out

In order to print program output to the screen, we have been using state-

ments like

System.out.println( “The value of b is “ + b );

and

System.out.print( “Enter your first name > “ );

And to instantiate a Scanner object, we used this statement:

Scanner scan = new Scanner( System.in );

It is now time to look at these statements in depth and understand them

completely.

System is an existing Java class in the java.lang package. One of its fields is a

static ...