Basic Predicate example

PredicateMyAss.java

import com.google.common.base.Predicate;
import com.google.common.collect.Iterables;
import com.google.common.collect.Lists;

import java.util.List;

import static com.google.common.base.Predicates.and;

public class PredicateMyAss {

  public static boolean isStartsWithG(String string) {
    Predicate<String> predicate = and(startWithG);
    return predicate.apply(string);
  }

  public static List<String> list = Lists.newArrayList("Google", "Vuava");

  private static Predicate<String> startWithG = new Predicate<String>() {
    @Override
    public boolean apply(final String stringValue) {
      return stringValue.startsWith("G");
    }
  };

  public static void main(String[] args) {
    System.out.println(isStartsWithG("Voogle"));

    System.out.println(Iterables.all(list, startWithG));
  }
}