diff --git a/.idea/misc.xml b/.idea/misc.xml
index 3ccb27b..160f392 100644
--- a/.idea/misc.xml
+++ b/.idea/misc.xml
@@ -11,7 +11,7 @@
       </list>
     </option>
   </component>
-  <component name="ProjectRootManager" version="2" languageLevel="JDK_1_8" project-jdk-name="1.8" project-jdk-type="JavaSDK">
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_17" project-jdk-name="17" project-jdk-type="JavaSDK">
     <output url="file://$PROJECT_DIR$/out" />
   </component>
 </project>
\ No newline at end of file
diff --git a/pom.xml b/pom.xml
index 3ce10da..a2c76a8 100644
--- a/pom.xml
+++ b/pom.xml
@@ -12,8 +12,8 @@
 
     <properties>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-        <maven.compiler.source>1.8</maven.compiler.source>
-        <maven.compiler.target>1.8</maven.compiler.target>
+        <maven.compiler.source>17</maven.compiler.source>
+        <maven.compiler.target>17</maven.compiler.target>
         <org.springframework.version>5.1.0.RELEASE</org.springframework.version>
     </properties>
 
diff --git a/src/main/java/top/fjy8018/designpattern/pattern/creational/factorymethod/AbstractVideoFactory.java b/src/main/java/top/fjy8018/designpattern/pattern/creational/factorymethod/AbstractVideoFactory.java
index 984ba08..bcb7b64 100644
--- a/src/main/java/top/fjy8018/designpattern/pattern/creational/factorymethod/AbstractVideoFactory.java
+++ b/src/main/java/top/fjy8018/designpattern/pattern/creational/factorymethod/AbstractVideoFactory.java
@@ -1,8 +1,5 @@
 package top.fjy8018.designpattern.pattern.creational.factorymethod;
 
-import sun.misc.Launcher;
-
-import java.util.Collection;
 
 /**
  * 定义一个创建产品对象的工厂接口，将实际创建工作推迟到子类当中
diff --git a/src/test/java/top/fjy8018/designpattern/pattern/behavior/visitor/spring/DrawServiceTest.java b/src/test/java/top/fjy8018/designpattern/pattern/behavior/visitor/spring/DrawServiceTest.java
index eb1fff0..2dc6f0a 100644
--- a/src/test/java/top/fjy8018/designpattern/pattern/behavior/visitor/spring/DrawServiceTest.java
+++ b/src/test/java/top/fjy8018/designpattern/pattern/behavior/visitor/spring/DrawServiceTest.java
@@ -29,6 +29,14 @@ class DrawServiceTest {
 		draw(new Factory());
 	}
 
+	/**
+	 * 输出：draw factory
+	 */
+	@Test
+	public void draw17() {
+		draw17(new Factory());
+	}
+
 	@Test
 	public void draw2() {
 		Visitor drawVisitor = new DrawVisitor();
@@ -52,4 +60,17 @@ class DrawServiceTest {
 		}
 	}
 
+	private void draw17(Node node) {
+		DrawService drawService = new DrawService();
+		if (node instanceof Building building) {
+			drawService.draw(building);
+		} else if (node instanceof Factory factory) {
+			drawService.draw(factory);
+		} else if (node instanceof School school) {
+			drawService.draw(school);
+		} else {
+			drawService.draw(node);
+		}
+	}
+
 }
\ No newline at end of file