Java OCA OCP Practice Question 896

Question

What is the result of the following code? 

4: int total = 0; 
5: StringBuilder letters = new StringBuilder("abcdefg"); 
6: total += letters.substring(1, 2).length(); 
7: total += letters.substring(6, 6).length(); 
8: total += letters.substring(6, 5).length(); 
9: System.out.println(total);
  • A. 1
  • B. 2
  • C. 3
  • D. 7
  • E. An exception is thrown.
  • F. The code does not compile. 


E.

Note

Line 6 adds 1 to total because substring() includes the starting index but not the ending index.

Line 7 adds 0 to total.

For Line 8: Java does not allow the indexes to be specified in reverse order and the code throws a StringIndexOutOfBoundsException.




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