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)); } }