Java OCA OCP Practice Question 1635

Question

What does the following output? 

import java.util.ArrayList;
import java.util.List;

public class Main {
   public static void main(String[] args) {
      List<String> list = new ArrayList<>();
      list.add("Austin");
      list.add("Boston");
      list.add("San Francisco");

      long c = list.stream().filter(a -> a.length() > 10).count();
      System.out.println(c + " " + list.size());
   }/*from   ww w  .j  av a  2 s  .c  o  m*/
}
  • A. 1 1
  • B. 1 3
  • C. 2 3
  • D. None of the above


B.

Note

The stream pipeline is correct and filters all values out that are 10 characters or smaller.

Only San Francisco is long enough, so c is 1.

The stream() call creates a new object, so stream operations do not affect the original list.

Since the original list is still 3 elements, Option B is correct.




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