Practice Set

What will be the output? 

1.

class DemoString 

{

   public static void main(String...rk)      

      {

          StringBuilder b = new StringBuilder("abcdef");

          b.delete(4,6);

          b.ensureCapacity(22);

          System.out.print(b.capacity()); 

          b.ensureCapacity(23);

          System.out.print(b.capacity());

    }

}

2.

     import java.time.*;
import java.time.format.*;
class DemoDateTime
{
   public static void main(String...rk)
    {
         DateTimeFormatter dtf = DateTimeFormatter.ofPattern("yy/mm/dd");
LocalDateTime ldt = LocalDateTime.of(2015, 10, 10 , 11, 22);
    System.out.println(dtf.format(ldt));       

    }
}