public String concat (String str)

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.

Examples:

 "cares".concat("s") returns "caress"
 "to".concat("get").concat("her") returns "together"
 

Parameters:

str

the String that is concatenated to the end of this String.

Returns:  a string that represents the concatenation of this object's characters followed by the string argument's characters.