Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;

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

import java.util.Iterator;

public class Main {
    /**
     * Returns a new {@link Collection} containing <tt><i>a</i> - <i>b</i></tt>.
     * The cardinality of each element <i>e</i> in the returned {@link Collection}
     * will be the cardinality of <i>e</i> in <i>a</i> minus the cardinality
     * of <i>e</i> in <i>b</i>, or zero, whichever is greater.
     *
     * @param a  the collection to subtract from, must not be null
     * @param b  the collection to subtract, must not be null
     * @return a new collection with the results
     * @see Collection#removeAll
     */
    public static Collection subtract(final Collection a, final Collection b) {
        ArrayList list = new ArrayList(a);
        for (Iterator it = b.iterator(); it.hasNext();) {
            list.remove(it.next());
        }
        return list;
    }
}