Cannot invoke redis.clients.jedis.JedisPool.getResource [duplicate]

Getting following issue

Exception in thread "main" java.lang.NullPointerException: Cannot invoke "redis.clients.jedis.JedisPool.getResource()" because "com.javapoint.spring_boot_example_sts.JedisMainNew.pool" is nullat com.javapoint.spring_boot_example_sts.JedisMainNew.addSets(JedisMainNew.java:38)at com.javapoint.spring_boot_example_sts.JedisMainNew.main(JedisMainNew.java:95)