diff --git a/common/src/test/java/org/opensearch/ml/common/connector/ConnectorActionTest.java b/common/src/test/java/org/opensearch/ml/common/connector/ConnectorActionTest.java
index ed1981e1be..05a94459a3 100644
--- a/common/src/test/java/org/opensearch/ml/common/connector/ConnectorActionTest.java
+++ b/common/src/test/java/org/opensearch/ml/common/connector/ConnectorActionTest.java
@@ -100,11 +100,11 @@ public void toXContent_NullValue() throws IOException {
         XContentBuilder builder = XContentBuilder.builder(XContentType.JSON.xContent());
         action.toXContent(builder, ToXContent.EMPTY_PARAMS);
         String content = TestHelper.xContentBuilderToString(builder);
-        String expctedContent = """
-            {"action_type":"PREDICT","method":"http","url":"https://test.com",\
-            "request_body":"{\\"input\\": \\"${parameters.input}\\"}"}\
-            """;
-        assertEquals(expctedContent, content);
+        assertEquals(
+            "{\"action_type\":\"PREDICT\",\"method\":\"http\",\"url\":\"https://test.com\","
+                + "\"request_body\":\"{\\\"input\\\": \\\"${parameters.input}\\\"}\"}",
+            content
+        );
     }
 
     @Test
@@ -127,23 +127,21 @@ public void toXContent() throws IOException {
         XContentBuilder builder = XContentBuilder.builder(XContentType.JSON.xContent());
         action.toXContent(builder, ToXContent.EMPTY_PARAMS);
         String content = TestHelper.xContentBuilderToString(builder);
-        String expctedContent = """
-            {"action_type":"PREDICT","method":"http","url":"https://test.com","headers":{"key1":"value1"},\
-            "request_body":"{\\"input\\": \\"${parameters.input}\\"}",\
-            "pre_process_function":"connector.pre_process.openai.embedding",\
-            "post_process_function":"connector.post_process.openai.embedding"}\
-            """;
-        assertEquals(expctedContent, content);
+        assertEquals(
+            "{\"action_type\":\"PREDICT\",\"method\":\"http\",\"url\":\"https://test.com\","
+                + "\"headers\":{\"key1\":\"value1\"},\"request_body\":\"{\\\"input\\\": \\\"${parameters.input}\\\"}\","
+                + "\"pre_process_function\":\"connector.pre_process.openai.embedding\","
+                + "\"post_process_function\":\"connector.post_process.openai.embedding\"}",
+            content
+        );
     }
 
     @Test
     public void parse() throws IOException {
-        String jsonStr = """
-            {"action_type":"PREDICT","method":"http","url":"https://test.com","headers":{"key1":"value1"},\
-            "request_body":"{\\"input\\": \\"${parameters.input}\\"}",\
-            "pre_process_function":"connector.pre_process.openai.embedding",\
-            "post_process_function":"connector.post_process.openai.embedding"}"\
-            """;
+        String jsonStr = "{\"action_type\":\"PREDICT\",\"method\":\"http\",\"url\":\"https://test.com\","
+            + "\"headers\":{\"key1\":\"value1\"},\"request_body\":\"{\\\"input\\\": \\\"${parameters.input}\\\"}\","
+            + "\"pre_process_function\":\"connector.pre_process.openai.embedding\","
+            + "\"post_process_function\":\"connector.post_process.openai.embedding\"}";
         XContentParser parser = XContentType.JSON
             .xContent()
             .createParser(
diff --git a/common/src/test/java/org/opensearch/ml/common/transport/connector/MLCreateConnectorInputTests.java b/common/src/test/java/org/opensearch/ml/common/transport/connector/MLCreateConnectorInputTests.java
index ab08907b84..c2bf0b77b0 100644
--- a/common/src/test/java/org/opensearch/ml/common/transport/connector/MLCreateConnectorInputTests.java
+++ b/common/src/test/java/org/opensearch/ml/common/transport/connector/MLCreateConnectorInputTests.java
@@ -55,19 +55,18 @@ public class MLCreateConnectorInputTests {
     private static final String TEST_CREDENTIAL_VALUE = "test_key_value";
     private static final String TEST_ROLE1 = "role1";
     private static final String TEST_ROLE2 = "role2";
-    private final String expectedInputStr = """
-        {"name":"test_connector_name","description":"this is a test connector","version":"1","protocol":"http",\
-        "parameters":{"input":"test input value"},"credential":{"key":"test_key_value"},\
-        "actions":[{"action_type":"PREDICT","method":"POST","url":"https://test.com",\
-        "headers":{"api_key":"${credential.key}"},\
-        "request_body":"{\\"input\\": \\"${parameters.input}\\"}",\
-        "pre_process_function":"connector.pre_process.openai.embedding",\
-        "post_process_function":"connector.post_process.openai.embedding"}],\
-        "backend_roles":["role1","role2"],"add_all_backend_roles":false,\
-        "access_mode":"PUBLIC","client_config":{"max_connection":20,\
-        "connection_timeout":10000,"read_timeout":10000,\
-        "retry_backoff_millis":10,"retry_timeout_seconds":10,"max_retry_times":-1,"retry_backoff_policy":"constant"}}\
-        """;
+    private final String expectedInputStr = "{\"name\":\"test_connector_name\","
+        + "\"description\":\"this is a test connector\",\"version\":\"1\",\"protocol\":\"http\","
+        + "\"parameters\":{\"input\":\"test input value\"},\"credential\":{\"key\":\"test_key_value\"},"
+        + "\"actions\":[{\"action_type\":\"PREDICT\",\"method\":\"POST\",\"url\":\"https://test.com\","
+        + "\"headers\":{\"api_key\":\"${credential.key}\"},"
+        + "\"request_body\":\"{\\\"input\\\": \\\"${parameters.input}\\\"}\","
+        + "\"pre_process_function\":\"connector.pre_process.openai.embedding\","
+        + "\"post_process_function\":\"connector.post_process.openai.embedding\"}],"
+        + "\"backend_roles\":[\"role1\",\"role2\"],\"add_all_backend_roles\":false,"
+        + "\"access_mode\":\"PUBLIC\",\"client_config\":{\"max_connection\":20,"
+        + "\"connection_timeout\":10000,\"read_timeout\":10000,"
+        + "\"retry_backoff_millis\":10,\"retry_timeout_seconds\":10,\"max_retry_times\":-1,\"retry_backoff_policy\":\"constant\"}}";
 
     @Before
     public void setUp() {
@@ -238,15 +237,16 @@ public void testParse() throws Exception {
 
     @Test
     public void testParse_ArrayParameter() throws Exception {
-        String expectedInputStr = """
-            {"name":"test_connector_name","description":"this is a test connector","version":"1",\
-            "protocol":"http","parameters":{"input":["test input value"]},"credential":{"key":"test_key_value"},\
-            "actions":[{"action_type":"PREDICT","method":"POST","url":"https://test.com",\
-            "headers":{"api_key":"${credential.key}"},"request_body":"{\\"input\\": \\"${parameters.input}\\"}",\
-            "pre_process_function":"connector.pre_process.openai.embedding",\
-            "post_process_function":"connector.post_process.openai.embedding"}],\
-            "backend_roles":["role1","role2"],"add_all_backend_roles":false,"access_mode":"PUBLIC"};\
-            """;
+        String expectedInputStr = "{\"name\":\"test_connector_name\","
+            + "\"description\":\"this is a test connector\",\"version\":\"1\",\"protocol\":\"http\","
+            + "\"parameters\":{\"input\":[\"test input value\"]},\"credential\":{\"key\":\"test_key_value\"},"
+            + "\"actions\":[{\"action_type\":\"PREDICT\",\"method\":\"POST\",\"url\":\"https://test.com\","
+            + "\"headers\":{\"api_key\":\"${credential.key}\"},"
+            + "\"request_body\":\"{\\\"input\\\": \\\"${parameters.input}\\\"}\","
+            + "\"pre_process_function\":\"connector.pre_process.openai.embedding\","
+            + "\"post_process_function\":\"connector.post_process.openai.embedding\"}],"
+            + "\"backend_roles\":[\"role1\",\"role2\"],\"add_all_backend_roles\":false,"
+            + "\"access_mode\":\"PUBLIC\"}";
         testParseFromJsonString(expectedInputStr, parsedInput -> {
             assertEquals(TEST_CONNECTOR_NAME, parsedInput.getName());
             assertEquals(1, parsedInput.getParameters().size());