// functional/ProduceFunction.java

// (c)2016 MindView LLC: see Copyright.txt

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

// Visit http://mindviewinc.com/Books/OnJava/ for more book information.

import java.util.function.*;

interface

FuncSS extends Function<String, String> {} // (1)

public class ProduceFunction {

static FuncSS produce() {

return s -> s.toLowerCase(); // (2)

}

public static void main(String[] args) {

FuncSS f = produce();

System.out.println(f.apply("YELLING"));

}

}

/* Output:

yelling

*/