Utils.java Source code

Introduction

Here is the source code for Utils.java

Source

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

public class Utils {

    public static <T> Collection<T> diff(Collection<T> c1, Collection<T> c2) {
        if (c1 == null || c1.size() == 0 || c2 == null || c2.size() == 0) {
            return c1;
        }
        Collection<T> difference = new ArrayList<T>();
        for (T item : c1) {
            if (!c2.contains(item)) {
                difference.add(item);
            }
        }
        return difference;
    }

}