// streams/FunctionMap3.java

// (c)2021 MindView LLC: see Copyright.txt

// We make no guarantees that this code is fit for any purpose.

// Visit http://OnJava8.com for more book information.

// Producing numeric output streams

import java.util.*;

import java.util.stream.*;

class FunctionMap3 {

public static void main(String[] args) {

Stream.of("5", "7", "9")

.mapToInt(Integer::parseInt)

.forEach(n -> System.out.format("%d ", n));

System.out.println();

Stream.of("17", "19", "23")

.mapToLong(Long::parseLong)

.forEach(n -> System.out.format("%d ", n));

System.out.println();

Stream.of("17", "1.9", ".23")

.mapToDouble(Double::parseDouble)

.forEach(n -> System.out.format("%f ", n));

}

}

/* Output:

5 7 9

17 19 23

17.000000 1.900000 0.230000

*/