Why Getting NoClassDefFound error for JedisConnection when using Spring Redis

Hello when trying to use spring-redis i am getting

java.lang.NoClassDefFoundError: Could not initialize class org.springframework.data.redis.connection.jedis.JedisConnection

exception when doing any connection operation using redis. My config method goes like this

 @Beanpublic RedisConnectionFactory jedisConnFactory() {    JedisConnectionFactory jedisConnectionFactory = new JedisConnectionFactory();    jedisConnectionFactory.setHostName("XXX.XX.XX.XXX");    jedisConnectionFactory.setPort(6381);    jedisConnectionFactory.setUsePool(true);    jedisConnectionFactory.afterPropertiesSet();    return jedisConnectionFactory;

Please suggest if anyone knows why i am getting this exception.