Using Redis for Java

Installation

Before we start using Redis in Java, we need to make sure that we have the Redis service and the Java Redis driver installed and that Java is working properly on your machine. Java installation configuration can refer to our Java Development environment configuration next let's install the Java Redis driver:

• First you need to download the driver package, download the Jedis.jar, and make sure to download the latest driver package.
• Include the driver package in your classpath.

Connect to the Redis service

Import Redis.clients.jedis.jedis;public class Redisjava {public   static void Main (string[] args) {      //Connect local Redis Service      Jedis Jedis = new Jedis ("localhost");      SYSTEM.OUT.PRINTLN ("Connection succeeded");      See if the service is running      System.out.println ("Server is running:" +jedis.ping ());}}

Compile the above Java program to ensure that the path to the driver package is correct.

  Connection Successful
Service is running: PONG

Redis Java String (string) instance

Import Redis.clients.jedis.Jedis;

public class Redisstringjava {public   static void Main (string[] args) {      //Connect local Redis service      Jedis Jedis = new Jed Is ("localhost");      SYSTEM.OUT.PRINTLN ("Connection succeeded");      Set Redis string data      jedis.set ("W3ckey", "www.w3cschool.cn");     Gets the stored data and outputs the     System.out.println ("Redis stored string is:" + jedis.get ("W3ckey"));}}

Compile the above program.

Connection Successful

Redis Java list (list) instance

Import Java.util.List


public class Redislistjava {public   static void Main (string[] args) {      //Connect local Redis service      Jedis Jedis = new Jedis ("localhost");      SYSTEM.OUT.PRINTLN ("Connection succeeded");      Store data into the list of      Jedis.lpush ("Tutorial-list", "Redis");      Jedis.lpush ("Tutorial-list", "Mongodb");      Jedis.lpush ("Tutorial-list", "Mysql");     Get the stored data and output     list<string> List = Jedis.lrange ("Tutorial-list", 0, 2);     for (int i=0; i<list.size (); i++) {        
       SYSTEM.OUT.PRINTLN ("list item is:" +list.get (i));      
     }  
   

Compile the above program.

The connection Success list item is: Redis list item: MONGODB list item: Mysql

Redis Java Keys Instance

Import Java.util.Iterator;
Import Java.util.Set;


public class Rediskeyjava {public   static void Main (string[] args) {      //Connect local Redis service      Jedis Jedis = new Jedis ( "localhost");      SYSTEM.OUT.PRINTLN ("Connection succeeded");           Obtain data and output     set<string> keys= jedis.keys ("*");
     Iterator<string> It=keys.iterator ();
     while (It.hasnext) {   
       String Key=it.next ();     
       System.out.println ("key");     
     }    
   

Compile the above program.

Connection Successful
W3ckey

Using Redis for Java