Jedis - Set

import java.util.Set;
import java.util.Iterator;

import redis.clients.jedis.Jedis;
import redis.clients.jedis.JedisPool;
import redis.clients.jedis.JedisPoolConfig;

public class TestJedisSet	{
	public static void main(String[] args)	{
		JedisPool pool = new JedisPool(new JedisPoolConfig(), "flatbox");
		Jedis jedis = pool.getResource();
		try {
			int	ELEMENTS_NUM	=	3;
			//	set
			final String[]	sets	=	{ "set1", "set2", "set3" };
			for ( final String set : sets )
			{
				for ( Iterator memberItr =
						jedis.smembers(set).iterator();
						memberItr.hasNext(); )
				{
					final String member = memberItr.next();
					if ( null != jedis.sismember(set, member) )
						jedis.srem(set, member);
				}
				for ( int i = 0; i < ELEMENTS_NUM; ++i )
					jedis.sadd(set, "val" + i);
				++ELEMENTS_NUM;
				//	smembers(set) returns all the members in set
				System.out.println("jedis.smembers(" + set + ") = " +
						jedis.smembers(set));
				//	scard(set) returns the number of members in set
				System.out.println("jedis.scard(" + set + ") = " +
						jedis.scard(set));
			}
			//	sadd(set, member) adds member to set and returns 1 if succeeded
			System.out.println("jedis.sadd(" + sets[0] + ", \"val-1\") = " +
					jedis.sadd(sets[0], "val-1"));

			System.out.println("jedis.smembers(" + sets[0] + ") = " +
					jedis.smembers(sets[0]));

			//	sdiff(sets...) returns the result of sets[0] - sets[1] - sets[2]...
			System.out.println("jedis.sdiff(" + sets[2] + ", " + sets[0] + ", "
					+ sets[1] + ") = " +
					jedis.sdiff(sets[2], sets[0], sets[1]));
			final String	set0	=	"set0";
			//	sdiffstore(set, sets...) saves the result of sdiff(sets...) in set
			//	and returns the number of members in set
			System.out.println("jedis.sdiffstore(" + set0 + ", " + sets[2] +
					", " + sets[0] + ", " + sets[1] + ") = " +
					jedis.sdiffstore(set0, sets[2], sets[0], sets[1]));

			System.out.println("jedis.smembers(" + set0 + ") = " +
					jedis.smembers(set0));

			//	sinter(sets...) returns the result of sets[0] & sets[1] & sets[2]...
			System.out.println("jedis.sinter(" + sets[0] + ", " + sets[1] +
					") = " + jedis.sinter(sets[0], sets[1]));
			//	sinterstore(set, sets...) saves the result of sinter(sets...) in set
			//	and returns the number of members in set
			System.out.println("jedis.sinterstore(" + set0 + ", " + sets[0] +
					", " + sets[1] + ") = " +
					jedis.sinterstore(set0, sets[0], sets[1]));

			System.out.println("jedis.smembers(" + set0 + ") = " +
					jedis.smembers(set0));

			//	sismember(set, member) returns true/false whether the member is in set
			System.out.println("jedis.sismember(" + set0 + ", \"val1\") = " +
					jedis.sismember(set0, "val1"));
			System.out.println("jedis.sismember(" + set0 + ", \"valx\") = " +
					jedis.sismember(set0, "valx"));
			//	smove(srcKey, dstKey, member) moves member in srcKey to dstKey
			System.out.println("jedis.smove(" + sets[2] + ", " + set0 +
					", \"val3\") = " + jedis.smove(sets[2], set0, "val3"));

			System.out.println("jedis.smembers(" + set0 + ") = " +
					jedis.smembers(set0));

			//	spop(set) removes & returns a random member in set
			System.out.println("jedis.spop(" + set0 + ") = " +
					jedis.spop(set0));
			//	srandmember(set) returns a random member in set
			System.out.println("jedis.srandmember(" + set0 + ") = " +
					jedis.srandmember(set0));
			//	srem(set, member) removes member from set and returns 1 if succeede
			System.out.println("jedis.srem(" + sets[0] + ", \"val1\") = " +
					jedis.srem(sets[0], "val1"));
			//	sunion(sets...) returns the result of sets[0] | sets[1] | sets[2]...
			System.out.println("jedis.sunion(sets) = " +
					jedis.sunion(sets));
			//	sunionstore(set, sets...) saves the result of sunion(sets...) in set
			//	and returns the number of members in set
			System.out.println("jedis.sunionstore(" + set0 + ", sets) = " +
					jedis.sunionstore(set0, sets));

			System.out.println("jedis.smembers(" + set0 + ") = " +
					jedis.smembers(set0));
/*
	redis 127.0.0.1:6379> help @set

	SADD key member
	summary: Add a member to a set
	since: 0.07

	SCARD key
	summary: Get the number of members in a set
	since: 0.07

	...
*/   
		} finally {
			/// ... it's important to return the Jedis instance to the pool
			//once you've finished using it
			pool.returnResource(jedis);
		}
		/// ... when closing your application:
		pool.destroy();
	}
}

TestJedisSet.java