diff --git a/src/test/java/com/alibaba/druid/sql/oracle/demo/Demo0.java b/src/test/java/com/alibaba/druid/sql/oracle/demo/Demo0.java
new file mode 100644
index 0000000000..c5e6957d1a
--- /dev/null
+++ b/src/test/java/com/alibaba/druid/sql/oracle/demo/Demo0.java
@@ -0,0 +1,47 @@
+/*
+ * Copyright 1999-2011 Alibaba Group Holding Ltd.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.alibaba.druid.sql.oracle.demo;
+
+import java.util.List;
+
+import junit.framework.TestCase;
+
+import com.alibaba.druid.sql.ast.SQLStatement;
+import com.alibaba.druid.sql.dialect.oracle.ast.visitor.OracleOutputVisitor;
+import com.alibaba.druid.sql.dialect.oracle.parser.OracleStatementParser;
+import com.alibaba.druid.sql.parser.SQLStatementParser;
+
+public class Demo0 extends TestCase {
+
+    public void test_demo_0() throws Exception {
+        String sql = "SELECT SYSDATE FROM DUAL";
+
+        // parser得到AST
+        SQLStatementParser parser = new OracleStatementParser(sql);
+        List<SQLStatement> stmtList = parser.parseStatementList(); //
+
+        // 将AST通过visitor输出
+        StringBuilder out = new StringBuilder();
+        OracleOutputVisitor visitor = new OracleOutputVisitor(out);
+
+        for (SQLStatement stmt : stmtList) {
+            stmt.accept(visitor);
+            out.append(";");
+        }
+
+        System.out.println(out.toString());
+    }
+}
diff --git a/src/test/java/com/alibaba/druid/sql/parser/SQLLexerTest2.java b/src/test/java/com/alibaba/druid/sql/parser/SQLLexerTest2.java
new file mode 100644
index 0000000000..ba2c0dd34b
--- /dev/null
+++ b/src/test/java/com/alibaba/druid/sql/parser/SQLLexerTest2.java
@@ -0,0 +1,25 @@
+package com.alibaba.druid.sql.parser;
+
+import junit.framework.TestCase;
+
+public class SQLLexerTest2 extends TestCase {
+
+    public void test_lexer() throws Exception {
+        String sql = "SELECT * FROM T WHERE F1 = ? ORDER BY F2";
+        SQLLexer lexer = new SQLLexer(sql);
+        for (;;) {
+            lexer.nextToken();
+            Token tok = lexer.token();
+
+            if (tok == Token.IDENTIFIER) {
+                System.out.println(tok.name() + "\t\t" + lexer.stringVal);
+            } else {
+                System.out.println(tok.name() + "\t\t\t" + tok.name);
+            }
+
+            if (tok == Token.EOF) {
+                break;
+            }
+        }
+    }
+}