println

This line outputs the string parameter to the console with a line return.

println(parameter): void
 
parameters are:
boolean, char, char[], double, float, int, long, Object, String

        System.out.println("Hello");
        System.out.println("I am a programmer");
 
        System.out.println(" 3 + 4 = " + 3+4 ); // appends 3 and 4 to the string
        System.out.println(" 3 + 4 = " + (3+4) ); // calculate 3+4 before the string "7" added

  Hello
  I am a programmer
  3 + 4 = 34
  3 + 4 = 7