[resolvido] Testar Performance em Java - ArrayList e HashSet

import java.util.HashSet;
import java.util.ArrayList;
import java.util.Collection;

public class TestarPperformance {

public static void main(String[] args) {

 System.out.println("Iniciando...");
 long inicio = System.currentTimeMillis();
 //Collection<Integer> teste = new ArrayList<>();
 Collection<Integer> teste = new HashSet<>();

 int total = 30000;
 //int total = 50000;
 //int total = 100000;
 //int total = 150000;
 //int total = 200000;

 for(int i=0; i< total; i++) {
 teste.add(i);
 }

 for(int i=0; i <total; i++) {
 teste.contains(i);
 }

 long fim = System.currentTimeMillis();
 long tempo = fim-inicio;
 System.out.println("Tempo gasto:" + tempo);

	}

}