Android Open Source - Locast-Core-Android Collection Utils

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License

The source code is released under:

GNU General Public License

Java Source Code

package com.stackoverflow;
// w w  w .j a  va  2 s . c  o m
import java.util.ArrayList;
import java.util.Collection;


/**
 * License: http://creativecommons.org/licenses/by-sa/2.5/
 *
 * @author jon + Alan
 * @see http://stackoverflow.com/questions/122105/java-what-is-the-best-way-to-filter-a-collection
 */
public class CollectionUtils {
    public static <T> Collection<T> filter(Collection<T> target, Predicate<T> predicate) {
        final Collection<T> result = new ArrayList<T>();
        for (final T element: target) {
            if (predicate.apply(element)) {
                result.add(element);
            }
        }
        return result;
    }

    public static <T> void filterInPlace(Collection<T> target, Predicate<T> predicate) {
        final ArrayList<T> removeList = new ArrayList<T>();
        for (final T element: target) {
            if (!predicate.apply(element)) {
                removeList.add(element);
            }
        }
        for (final T element: removeList){
            target.remove(element);
        }
    }

}

Java Source Code List

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