DOC-6019 Jedis notebook for strings data type page

Author: andy-stark-redis

local_examples/tmp/datatypes/strings/StringExample.java

@@ -0,0 +1,78 @@
+// EXAMPLE: set_tutorial
+// BINDER_ID jedis-dt-string
+package io.redis.examples;
+
+//REMOVE_START
+import static org.junit.jupiter.api.Assertions.*;
+
+import org.junit.jupiter.api.Test;
+//REMOVE_END
+
+import redis.clients.jedis.UnifiedJedis;
+import redis.clients.jedis.params.SetParams;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+
+public class StringExample {
+
+  @Test
+  public void run() {
+    try (UnifiedJedis jedis = new UnifiedJedis("redis://localhost:6379")) {
+
+      // STEP_START set_get
+      String res1 = jedis.set("bike:1", "Deimos");
+      System.out.println(res1); // OK
+      String res2 = jedis.get("bike:1");
+      System.out.println(res2); // Deimos
+      // STEP_END
+
+      // REMOVE_START
+      assertEquals("OK", res1);
+      assertEquals("Deimos", res2);
+      // REMOVE_END
+
+      // STEP_START setnx_xx
+      Long res3 = jedis.setnx("bike:1", "bike");
+      System.out.println(res3); // 0 (because key already exists)
+      System.out.println(jedis.get("bike:1")); // Deimos (value is unchanged)
+      String res4 = jedis.set("bike:1", "bike", SetParams.setParams().xx()); // set the value to "bike" if it
+      // already
+      // exists
+      System.out.println(res4); // OK
+      // STEP_END
+
+      // REMOVE_START
+      assertEquals(0L, res3.longValue());
+      assertEquals("OK", res4);
+      // REMOVE_END
+
+      // STEP_START mset
+      String res5 = jedis.mset("bike:1", "Deimos", "bike:2", "Ares", "bike:3", "Vanth");
+      System.out.println(res5); // OK
+      List<String> res6 = jedis.mget("bike:1", "bike:2", "bike:3");
+      System.out.println(res6); // [Deimos, Ares, Vanth]
+      // STEP_END
+
+      // REMOVE_START
+      assertEquals("OK", res5);
+      List<String> expected = new ArrayList<>(Arrays.asList("Deimos", "Ares", "Vanth"));
+      assertEquals(expected, res6);
+      // REMOVE_END
+
+      // STEP_START incr
+      jedis.set("total_crashes", "0");
+      Long res7 = jedis.incr("total_crashes");
+      System.out.println(res7); // 1
+      Long res8 = jedis.incrBy("total_crashes", 10);
+      System.out.println(res8); // 11
+      // STEP_END
+
+      // REMOVE_START
+      assertEquals(1L, res7.longValue());
+      assertEquals(11L, res8.longValue());
+      // REMOVE_END
+    }
+  }
+}