diff --git a/client/src/test/java/com/vesoft/nebula/client/graph/net/TestSession.java b/client/src/test/java/com/vesoft/nebula/client/graph/net/TestSession.java
index 30e3ca71f..e41342437 100644
--- a/client/src/test/java/com/vesoft/nebula/client/graph/net/TestSession.java
+++ b/client/src/test/java/com/vesoft/nebula/client/graph/net/TestSession.java
@@ -11,6 +11,7 @@
 import com.vesoft.nebula.client.graph.data.HostAddress;
 import com.vesoft.nebula.client.graph.data.ResultSet;
 import com.vesoft.nebula.client.graph.exception.IOErrorException;
+import com.vesoft.nebula.client.util.ProcessUtil;
 import java.io.BufferedReader;
 import java.io.InputStreamReader;
 import java.util.Arrays;
@@ -24,21 +25,6 @@
 import org.junit.Test;
 
 public class TestSession {
-    private static void printProcessStatus(String cmd, Process p) {
-        try {
-            BufferedReader reader = new BufferedReader(
-                    new InputStreamReader(p.getInputStream()));
-
-            String line;
-            System.out.print(cmd + " output: ");
-            while ((line = reader.readLine()) != null) {
-                System.out.print(line);
-            }
-            System.out.print("\n");
-        } catch (Exception e) {
-            e.printStackTrace();
-        }
-    }
 
     @Test
     public void testMultiThreadUseTheSameSession() {
@@ -121,7 +107,7 @@ public void testReconnectWithMultiServices() {
             String cmd = "docker restart nebula-docker-compose_graphd2_1";
             Process p = runtime.exec(cmd);
             p.waitFor(10, TimeUnit.SECONDS);
-            printProcessStatus(cmd, p);
+            ProcessUtil.printProcessStatus(cmd, p);
 
             NebulaPoolConfig nebulaPoolConfig = new NebulaPoolConfig();
             nebulaPoolConfig.setMaxConnSize(6);
@@ -145,11 +131,11 @@ public void testReconnectWithMultiServices() {
                     cmd = "docker stop nebula-docker-compose_graphd0_1";
                     p = runtime.exec(cmd);
                     p.waitFor(5, TimeUnit.SECONDS);
-                    printProcessStatus(cmd, p);
+                    ProcessUtil.printProcessStatus(cmd, p);
                     cmd = "docker stop nebula-docker-compose_graphd1_1";
                     p = runtime.exec(cmd);
                     p.waitFor(5, TimeUnit.SECONDS);
-                    printProcessStatus(cmd, p);
+                    ProcessUtil.printProcessStatus(cmd, p);
                 }
                 try {
                     // the session update later
diff --git a/client/src/test/java/com/vesoft/nebula/client/util/ProcessUtil.java b/client/src/test/java/com/vesoft/nebula/client/util/ProcessUtil.java
index 009f57a01..691079d06 100644
--- a/client/src/test/java/com/vesoft/nebula/client/util/ProcessUtil.java
+++ b/client/src/test/java/com/vesoft/nebula/client/util/ProcessUtil.java
@@ -3,6 +3,26 @@
  * This source code is licensed under Apache 2.0 License,
  * attached with Common Clause Condition 1.0, found in the LICENSES directory.
  */
- 
-package com.vesoft.nebula.client.util;public class ProcessUtil {
+
+package com.vesoft.nebula.client.util;
+
+import java.io.BufferedReader;
+import java.io.InputStreamReader;
+
+public class ProcessUtil {
+    public static void printProcessStatus(String cmd, Process p) {
+        try {
+            BufferedReader reader = new BufferedReader(
+                    new InputStreamReader(p.getInputStream()));
+
+            String line;
+            System.out.print(cmd + " output: ");
+            while ((line = reader.readLine()) != null) {
+                System.out.print(line);
+            }
+            System.out.print("\n");
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+    }
 }