JavaGenerics/src/java_generics/SortingExamples.java at master · zeddysoft/JavaGenerics · GitHub

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package java_generics;

import java.util.ArrayList;

import java.util.Comparator;

import java.util.List;

/**

* @author Azeez.Taiwo

public class SortingExamples {

public static void main(String[] args) {

Person donDraper = new Person("Don Draper", 89);

Person peggyOlson = new Person("Peggy Olson", 65);

Person bertCooper = new Person("Bert Cooper", 100);

List<Person> madMen = new ArrayList<>();

madMen.add(donDraper);

madMen.add(peggyOlson);

madMen.add(bertCooper);

List<Integer> a = new ArrayList<>();

a.add(1);

a.add(2);

a.add(3);

final Person youngestCastMember = min(madMen, new PersonComparator());

System.out.println(youngestCastMember);

System.out.println(min(a, Integer::compare));

}

public static <T> T min(List<T> list, Comparator<T> comparator) {

T lowest = list.get(0);

for (int i = 1; i < list.size(); ++i) {

final T element = list.get(i);

if (comparator.compare(element, lowest) < 0) {

lowest = element;

}

return lowest;

}

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