CompareTest.java

package edu.revtek.util;

import java.lang.reflect.*;
import java.util.*;

/**
 * @author Caleb Whiting
 */
public class CompareTest {

	public static void main(String[] args) {
		Random random = new Random();
		List<Wrapper> wrappers = new LinkedList<>();
		for (int i = 0; i < 10; i++) {
			wrappers.add(new Wrapper(random.nextInt(50)));
		}
		printWrappers(wrappers, "Unsorted");
		// Compare Properties
		Collections.sort(wrappers, new PropertyComparator<Wrapper>(Method.class, "getValue"));
		// Compare Normally
		Collections.sort(wrappers, new Comparator<Wrapper>() {
			@Override
			public int compare(Wrapper o1, Wrapper o2) {
				return Integer.compare(o1.getValue(), o2.getValue());
			}
		});
		printWrappers(wrappers, "Sorted");
	}

	static void printWrappers(Collection<Wrapper> wrappers, String message) {
		System.out.println(message);
		for (Wrapper wrapper : wrappers) {
			System.out.print(' ');
			System.out.println(wrapper.value);
		}
	}

	static class Wrapper {

		private final int value;

		public Wrapper(int value) {
			this.value = value;
		}

		public int getValue() {
			return value;
		}

	}

}