my  $output = "";
for (1 .. 1000) {
   $output .= get_long_string();
}
print $output;

##</code><code>##

StringBuffer output = new StringBuffer();
for (1 .. 1000) {
   output.appends(get_long_string());
}
System.out.print(output.toString());

##</code><code>##

my  $output = "";
for (1 .. 1000) {
   $output = "" . get_long_string() . $output;
}
print $output;