Which of the following would return the last character of the String x?
A) x.charAt(0);
B) x.charAt(last);
C) x.charAt(length(x));
D) x.charAt(x.length( )-1);
E) x.charAt(x.length( ));

Question

Quizplus · Accepted Answer

D) Since last is not defined, B is syntactically invalid. The 0ᵗʰ character is the first in the String, so A is True only if the String has a single character. The answer in C is syntactically invalid as length can only be called by passing the message to x. Finally, D and E are syntactically valid, but since length returns the size of the String, and since the first character starts at the 0ᵗʰ position, the last character is at x.length()-1, so E would result in a run-time error.

Which of the Following Would Return the Last Character of the String