Added java code snippet for hyperloglog

src/test/java/io/redis/examples/HyperLogLogExample.java

@@ -0,0 +1,41 @@
+// EXAMPLE: hll_tutorial
+package io.redis.examples;
+
+import org.junit.Assert;
+import org.junit.Test;
+import redis.clients.jedis.UnifiedJedis;
+
+public class HyperLogLogExample {
+
+    @Test
+    public void run() {
+        // HIDE_START
+        UnifiedJedis jedis = new UnifiedJedis("redis://localhost:6379");
+        // HIDE_END
+
+        // REMOVE_START
+        jedis.del("bikes", "commuter_bikes", "all_bikes");
+        // REMOVE_END
+
+        // STEP_START pfadd
+        long res1 = jedis.pfadd("bikes", "Hyperion", "Deimos", "Phoebe", "Quaoar");
+        System.out.println(res1); // >>> 1
+
+        long res2 = jedis.pfcount("bikes");
+        System.out.println(res2); // >>> 4
+
+        long res3 = jedis.pfadd("commuter_bikes", "Salacia", "Mimas", "Quaoar");
+        System.out.println(res3); // >>> 1
+
+        String res4 = jedis.pfmerge("all_bikes", "bikes", "commuter_bikes");
+        System.out.println(res4); // >>> OK
+
+        // REMOVE_START
+        Assert.assertEquals("OK", res4);
+        // REMOVE_END
+
+        long res5 = jedis.pfcount("all_bikes");
+        System.out.println(res5); // >>> 6
+        // STEP_END
+    }
+}