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// streams/Reduce.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.

import java.util.*;

import java.util.stream.*;

class Frobnitz {

int size;

Frobnitz(int sz) { size = sz; }

@Override public String toString() {

return "Frobnitz(" + size + ")";

}

// Generator:

static Random rand = new Random(47);

static final int BOUND = 100;

static Frobnitz supply() {

return new Frobnitz(rand.nextInt(BOUND));

}

}

public class Reduce {

public static void main(String[] args) {

Stream.generate(Frobnitz::supply)

.limit(10)

.peek(System.out::println)

.reduce((fr0, fr1) -> fr0.size < 50 ? fr0 : fr1)

.ifPresent(System.out::println);

}

}

/* Output:

Frobnitz(58)

Frobnitz(55)

Frobnitz(93)

Frobnitz(61)

Frobnitz(61)

Frobnitz(29)

Frobnitz(68)

Frobnitz(0)

Frobnitz(22)

Frobnitz(7)

Frobnitz(29)

*/