String ring = "One ring to rule them all, "
String find = "One ring to find them."

ring = ring + find;

Answer:

No. The String objects don't change. The reference variable ring is changed in the third statement to refer to a different String than originally. (Its original String becomes garbage, which is collected by the garbage collector.)

`trim()`

Here is a line of the documentation for the String class.

public String trim();

The trim() method of a String object creates a new String that is the same as the original except that any leading or trailing space is trimmed off (removed).

QUESTION 13:

Examine the following code:

String userData = "     745   ";
String fixed;

fixed = userData.trim();

Has the trim() method been used correctly? How many objects have been created?