Strings and Object References in Java

15. trim() with Input data

Answer:

Has the trim() method been used correctly? Yes
How many objects have been created? 2 --- the first literal and the new String created by trim()

`trim()` with Input data

The trim() method creates a new String. The new String contains the same characters as the old one but has whitespace characters (blanks, tabs, and several other non-printing characters) removed from both ends (but not from the middle). So, for example, after the last statement

String userData = "     745   ";
String fixed;

fixed = userData.trim();

the new String referenced by fixed will contain the characters "745" without any surrounding spaces.

(Usage Note:) This method is often useful. Extraneous spaces on either end of user input is a common problem.

Question 15:
Inspect the following:
String dryden = "   None but the brave deserves the fair.   " ;
System.out.println( "|" + dryden.trim() + "|" );
What is printed out?