Introduction to Programming

boxed() and mapToObj()

The boxed() intermediate operation converts (boxes) elements of the primitive numeric type to the corresponding wrapper type:

//IntStream.range(1, 3).map(Integer::shortValue)        //compile error//                     .forEach(System.out::print);  IntStream.range(1, 3).boxed().map(Integer::shortValue)                             .forEach(System.out::print);  //prints: 12//LongStream.range(1, 3).map(Long::shortValue)          //compile error//                      .forEach(System.out::print);  LongStream.range(1, 3).boxed().map(Long::shortValue)                              .forEach(System.out::print);  //prints: 12//DoubleStream.of(1).map(Double::shortValue)            //compile error//                  .forEach(System.out::print);  DoubleStream.of(1).boxed().map(Double::shortValue)                          .forEach(System.out::print);      //prints: 1

In the preceding code, we have commented ...