OCA Java SE 8 Mock Exam 2 - OCA Mock Question 18








Question

Which of the following are valid uses of the sb variable? 

StringBuilder sb = new StringBuilder;
  1. sb.append(34.5);
  2. sb.deleteCharAt(34.5);
  3. sb.toInteger(3);
  4. sb.toString();




Answer



a, and d

Note

There is no StringBuilder toInteger method.

deleteCharAt does not accept double value.