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Java library to map flat record - ResultSet, csv - to java object with minimum configuration and low footprint.

There is a newer version: 9.0.2

package org.simpleflatmapper.util;

import java.util.Collections;
import java.util.HashSet;
import java.util.Set;

/**
 * Implementation of {@link Consumer} that collect all the value into a set.
 * Equivalent to a {@link java.util.stream.Collectors#toSet()}.
 * @param  the type of the callback argument
 */
public final class ImmutableSetCollector implements Consumer {

	private final Set set = new HashSet();
	
	@Override
	public void accept(final T t) {
		set.add(t);
	}

    /**
     *
     * @return the collected objects
     */
	public Set getSet() {
		return Collections.unmodifiableSet(set);
	}
}