EXPRESSIONS

String Concatenation Operator

+

15.17.1

is:

"fiddlers 12"

In this jocular little example:

class Bottles {

static void printSong(Object stuff, int n) {

String plural = "s";

loop: while (true) {

System.out.println(n + " bottle" + plural

+ " of " + stuff + " on the wall,");

System.out.println(n + " bottle" + plural

+ " of " + stuff + ";");

System.out.println("You take one down "

+ "and pass it around:");

  n;

plural = (n == 1) ? "" : "s";

if (n == 0)

break loop;

System.out.println(n + " bottle" + plural

+ " of " + stuff + " on the wall!");

System.out.println();

}

System.out.println("No bottles of " +

stuff + " on the wall!");

}

}

the method

printSong

 will print a version of a children's song. Popular values

for stuff include

"pop"

 and

"beer"

; the most popular value for

n

 is

100

. Here is

the output that results from

Bottles.printSong("slime", 3)

:

3 bottles of slime on the wall,

3 bottles of slime;

You take one down and pass it around:

2 bottles of slime on the wall!

2 bottles of slime on the wall,

2 bottles of slime;

You take one down and pass it around:

1 bottle of slime on the wall!

1 bottle of slime on the wall,

1 bottle of slime;

You take one down and pass it around:

No bottles of slime on the wall!

357