diff --git a/java-client/src/main/java/org/opensearch/client/json/JsonpUtils.java b/java-client/src/main/java/org/opensearch/client/json/JsonpUtils.java
index 604bf2791e..38a03a0742 100644
--- a/java-client/src/main/java/org/opensearch/client/json/JsonpUtils.java
+++ b/java-client/src/main/java/org/opensearch/client/json/JsonpUtils.java
@@ -41,10 +41,13 @@
 import jakarta.json.stream.JsonParser.Event;
 import jakarta.json.stream.JsonParsingException;
 import java.io.StringReader;
+import java.io.StringWriter;
 import java.util.AbstractMap;
 import java.util.Map;
 import java.util.stream.Collectors;
 import javax.annotation.Nullable;
+
+import org.opensearch.client.json.jsonb.JsonbJsonpMapper;
 import org.opensearch.client.util.ObjectBuilder;
 
 public class JsonpUtils {
@@ -238,4 +241,14 @@ public static void serializeIntOrNull(JsonGenerator generator, int value, int de
             generator.write(value);
         }
     }
+
+    public static String toJson(JsonpSerializable obj) {
+        StringWriter stringWriter = new StringWriter();
+        JsonbJsonpMapper mapper = new JsonbJsonpMapper();
+        JsonGenerator generator = mapper.jsonProvider().createGenerator(stringWriter);
+        mapper.serialize(obj, generator);
+        generator.close();
+        return stringWriter.toString();
+    }
+
 }
diff --git a/java-client/src/test/java/org/opensearch/client/opensearch/json/JsonDataTest.java b/java-client/src/test/java/org/opensearch/client/opensearch/json/JsonDataTest.java
index af17210b97..0116c26b2d 100644
--- a/java-client/src/test/java/org/opensearch/client/opensearch/json/JsonDataTest.java
+++ b/java-client/src/test/java/org/opensearch/client/opensearch/json/JsonDataTest.java
@@ -36,11 +36,18 @@
 import jakarta.json.JsonValue;
 import jakarta.json.stream.JsonParser;
 import java.io.StringReader;
+
 import org.junit.Assert;
 import org.junit.Test;
 import org.opensearch.client.json.JsonData;
 import org.opensearch.client.json.JsonpMapper;
+import org.opensearch.client.json.JsonpUtils;
 import org.opensearch.client.json.jsonb.JsonbJsonpMapper;
+import org.opensearch.client.opensearch._types.FieldValue;
+import org.opensearch.client.opensearch._types.query_dsl.TermQuery;
+import org.opensearch.client.opensearch.core.IndexRequest;
+import org.opensearch.client.opensearch.core.SearchRequest;
+import org.opensearch.client.opensearch.experiments.api.query2.BoolQuery;
 import org.opensearch.client.opensearch.model.ModelTestCase;
 
 public class JsonDataTest extends Assert {
@@ -89,4 +96,65 @@ public void testConvert() {
         assertEquals(JsonValue.ValueType.STRING, value.getValueType());
         assertEquals("foo", ((JsonString) value).getString());
     }
+
+
+
+    public class Person {
+        private int aga;
+        private String name;
+
+
+        public Person(int aga, String name) {
+            this.aga = aga;
+            this.name = name;
+        }
+
+        public int getAga() {
+            return aga;
+        }
+
+        public String getName() {
+            return name;
+        }
+    }
+
+    @Test
+    public void indexRequestToJsonTest() {
+        String expectedJson = "{\"aga\":42,\"name\":\"koko\"}";
+        Person person = new Person(42, "koko");
+        IndexRequest<Person> indexRequest = new IndexRequest.Builder<Person>()
+                .index("sample-index")
+                .id("1")
+                .document(person)
+                .build();
+
+        String json = JsonpUtils.toJson(indexRequest);
+        System.out.println(json);
+
+        assertEquals(expectedJson, json);
+    }
+
+    @Test
+    public void searchRequestToJsonTest() {
+        String expectedJson = "{\"query\":{\"term\":{\"key-field\":{\"value\":\"value-filed\"}}}}";
+
+        SearchRequest searchRequest = new SearchRequest
+                .Builder()
+                .index("my-index")
+                .query(new TermQuery
+                        .Builder()
+                        .field("key-field")
+                        .value(FieldValue.of("value-filed"))
+                        .build()
+                        ._toQuery()
+                )
+                .build();
+
+        String json = JsonpUtils.toJson(searchRequest);
+        System.out.println(json);
+
+        assertEquals(expectedJson, json);
+    }
+
+
 }