MoreCollections.java

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package com.arcle.rmt.j2se.util;

import java.util.Collection;
import java.util.Iterator;

public final class MoreCollections {

    private MoreCollections() {
        throw new Error("MoreCollections is just a container for static methods.");
    }

    public static boolean visitCollection(Collection c, CollectionVisitor v) {
        boolean wantsMore = true;
        Iterator iter = c.iterator();
        while (iter.hasNext() && wantsMore) {
            wantsMore = v.visitCollection(iter.next());
        }
        // when wantsMore is true, iteration is stopped because the iterator
        // does not have more elements.
        return wantsMore;
    }
}

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