FilterCriteria.java

import com.google.common.base.Predicate;

public class FilterCriteria {

    public static Predicate<Item> freeShipping() {
        return new Predicate<Item>() {
            public boolean apply(Item item) {
                return item.getPrice() >= 25 && item.isAvailable();
            }
         };
    }
}

FreeShippingFilterExample.java

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

import java.util.List;

public class FreeShippingFilterExample {

    public static void main (String[] args) {

        List<Item> searchResults
                = Lists.newArrayList(new Item("item1", 30, true),
                                     new Item("item2", 20, true),
                                     new Item("item3", 100, false));

        // Prints "[item1]"
        System.out.println(
            Iterables.filter(searchResults, FilterCriteria.freeShipping())
        );
    }
}

Item.java

public class Item {

    private String name;
    private int price;
    private boolean available;

    public Item(String name, int price, boolean available) {
        this.name = name;
        this.price = price;
        this.available = available;
    }

    public String getName() {
        return name;
    }

    public int getPrice() {
        return price;
    }


    public boolean isAvailable() {
        return available;
    }

    @Override
    public String toString() {
        return getName();
    }
}