How to Filter Collections By Type with Guava

import static java.lang.System.out;

import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;

import com.google.common.collect.Iterators;

public final class GuavaSample {

  public static void main(final String[] args) {
    final List<Object> lst = new ArrayList<Object>();

    lst.add("Simples");

    lst.add("Assim");

    lst.add(1);

    lst.add(2);

    final Iterator<String> iter = Iterators.filter(lst.iterator(), String.class); // or Collections2, Iterables

    while (iter.hasNext())
      out.println(iter.next()); // only prints "Simples" and "Assim"

  }

}

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