“Print statements”

There are three kinds of print statements:

• System.out.print(argument) just prints out its argument, and
• System.out.println(argument) prints out its argument and ends the line.

A third kind, System.out.printf(format, arguments), gives more control over how things are printed.

Example	Result
System.out.print("one"); System.out.print("two"); System.out.println("three");	onetwothree
System.out.println("one"); System.out.println("two"); System.out.println("three");	one two three
System.out.println();	[new line]

A print "statement" is actually a call to the print or println method of the System.out object. The print method takes exactly one argument; the println method takes one argument or no arguments. However, the one argument may be a String which you create using the string concatenation operator +. If you ask to print an object, the print and println methods call that object's toString() method to get a printable string.

Example	Result
int x = 3; int y = 5; System.out.println(x + " and " + y + " is " + (x + y));	3 and 5 is 8
int x = 3; int y = 5; System.out.println(x + " and " + y + " is " + x + y);	3 and 5 is 35

Anything concatenated ("added") to a string is first converted to a string itself. In the second example above, the x is concatenated with the string, then the y is concatenated.