diff --git a/docs/examples/java/src/test/java/com/taos/test/TestAll.java b/docs/examples/java/src/test/java/com/taos/test/TestAll.java
index 42db24485afec05298159f7b0c3a4e15835d98ed..ad261e6f9e97687371ff2a8b2a3dae60e01e0845 100644
--- a/docs/examples/java/src/test/java/com/taos/test/TestAll.java
+++ b/docs/examples/java/src/test/java/com/taos/test/TestAll.java
@@ -1,91 +1,20 @@
 package com.taos.test;
 
-import com.taos.example.*;
-import org.junit.FixMethodOrder;
+import com.taos.example.CloudTutorial;
+import com.taos.example.ConnectCloudExample;
 import org.junit.Test;
 
-import java.sql.*;
+import java.sql.SQLException;
 
-@FixMethodOrder
 public class TestAll {
-    private String[] args = new String[]{};
-
-    public void dropDB(String dbName) throws SQLException {
-        String jdbcUrl = "jdbc:TAOS://localhost:6030?user=root&password=taosdata";
-        try (Connection conn = DriverManager.getConnection(jdbcUrl)) {
-            try (Statement stmt = conn.createStatement()) {
-                stmt.execute("drop database if exists " + dbName);
-            }
-        }
-    }
-
-    public void insertData() throws SQLException {
-        String jdbcUrl = "jdbc:TAOS://localhost:6030?user=root&password=taosdata";
-        try (Connection conn = DriverManager.getConnection(jdbcUrl)) {
-            try (Statement stmt = conn.createStatement()) {
-                String sql = "INSERT INTO power.d1001 USING power.meters TAGS(California.SanFrancisco, 2) VALUES('2018-10-03 14:38:05.000',10.30000,219,0.31000)\n" +
-                        "                        power.d1001 USING power.meters TAGS(California.SanFrancisco, 2) VALUES('2018-10-03 15:38:15.000',12.60000,218,0.33000)\n" +
-                        "                        power.d1001 USING power.meters TAGS(California.SanFrancisco, 2) VALUES('2018-10-03 15:38:16.800',12.30000,221,0.31000)\n" +
-                        "                        power.d1002 USING power.meters TAGS(California.SanFrancisco, 3) VALUES('2018-10-03 15:38:16.650',10.30000,218,0.25000)\n" +
-                        "                        power.d1003 USING power.meters TAGS(California.LosAngeles, 2) VALUES('2018-10-03 15:38:05.500',11.80000,221,0.28000)\n" +
-                        "                        power.d1003 USING power.meters TAGS(California.LosAngeles, 2) VALUES('2018-10-03 15:38:16.600',13.40000,223,0.29000)\n" +
-                        "                        power.d1004 USING power.meters TAGS(California.LosAngeles, 3) VALUES('2018-10-03 15:38:05.000',10.80000,223,0.29000)\n" +
-                        "                        power.d1004 USING power.meters TAGS(California.LosAngeles, 3) VALUES('2018-10-03 15:38:06.000',10.80000,223,0.29000)\n" +
-                        "                        power.d1004 USING power.meters TAGS(California.LosAngeles, 3) VALUES('2018-10-03 15:38:07.000',10.80000,223,0.29000)\n" +
-                        "                        power.d1004 USING power.meters TAGS(California.LosAngeles, 3) VALUES('2018-10-03 15:38:08.500',11.50000,221,0.35000)";
-
-                stmt.execute(sql);
-            }
-        }
-    }
-
-    @Test
-    public void testJNIConnect() throws SQLException {
-        JNIConnectExample.main(args);
-    }
-
-    @Test
-    public void testRestConnect() throws SQLException {
-        RESTConnectExample.main(args);
-    }
-
-    @Test
-    public void testRestInsert() throws SQLException {
-        dropDB("power");
-        RestInsertExample.main(args);
-        RestQueryExample.main(args);
-    }
-
-    @Test
-    public void testStmtInsert() throws SQLException {
-        dropDB("power");
-        StmtInsertExample.main(args);
-    }
 
     @Test
-    public void testSubscribe() {
-
-        Thread thread = new Thread(() -> {
-            try {
-                Thread.sleep(1000);
-                insertData();
-            } catch (SQLException e) {
-                e.printStackTrace();
-            } catch (InterruptedException e) {
-                e.printStackTrace();
-            }
-        });
-        thread.start();
-        SubscribeDemo.main(args);
+    public void testConnectCloudExample() throws SQLException {
+        ConnectCloudExample.main(new String[]{});
     }
 
-    @Test
-    public void testSchemaless() throws SQLException {
-        LineProtocolExample.main(args);
-        TelnetLineProtocolExample.main(args);
-        // for json protocol, tags may be double type. but for telnet protocol tag must be nchar type.
-        // To avoid type mismatch, we delete database test.
-        dropDB("test");
-        JSONProtocolExample.main(args);
-    }
-}
+//    @Test
+//    public void testCloudTutorial() throws SQLException {
+//        CloudTutorial.main(new String[]{});
+//    }
+}
\ No newline at end of file