Practice · 3 of 4
Exam MCQ
CHALLENGE
Difficulty: advanced+25 XP
What is printed?
``java
StringBuilder s = new StringBuilder("ab");
s.insert(1, "X");
s.deleteCharAt(0);
System.out.print(s);
`
A. Xb
B. ab
C. bX
D. Xa`
Print the letter, then your one-sentence justification.
Press Submit to check your solution.
Back to lesson: Practice: Exam #2: MCQ section