Java OCA OCP Practice Question 1483

Question

Consider the following code: 

public class Main {
   private StringBuilder sb = new StringBuilder();

   public void logMsg(String location, String message) {
      sb.append(location);/*ww  w  .java 2 s.co  m*/
      sb.append("-");
      sb.append(message);
   }

   public void dumpLog() {
      System.out.println(sb.toString());
      // Empty the contents of sb here
   }

}

Which of the following options will empty the contents of the StringBuilder referred to by variable sb in method dumpLog()?

Select 1 option 

A. sb.delete (0, sb .length ()); 
B. sb.clear (); 
C. sb.empty (); 
D. sb.removeAll (); 
E. sb.deleteAll (); 
  



Correct Option is  : A

Note 


public StringBuilder delete (int start, int end)

Removes the characters in a substring of this sequence.




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