// typeinfo/DynamicSupplier.java

// (c)2017 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.function.*;

import java.util.stream.*;

class CountedInteger {

private static long counter;

private final long id = counter++;

@Override

public String toString() { return Long.toString(id); }

}

public class DynamicSupplier<T> implements Supplier<T> {

private Class<T> type;

public DynamicSupplier(Class<T> type) {

this.type = type;

}

public T get() {

try {

return type.newInstance();

} catch(InstantiationException |

IllegalAccessException e) {

throw new RuntimeException(e);

}

}

public static void main(String[] args) {

Stream.generate(

new DynamicSupplier<>(CountedInteger.class))

.skip(10)

.limit(5)

.forEach(System.out::println);

}

}

/* Output:

10

11

12

13

14

*/