Concatenates the specified string to the end of this string.
If the length of the argument string is
0, then this
String object is returned. Otherwise, a new
String object is created, representing a character
sequence that is the concatenation of the character sequence
represented by this
String object and the character
sequence represented by the argument string.
"cares".concat("s") returns "caress" "to".concat("get").concat("her") returns "together"
| the |