diff --git a/jeecg-module-spectrum-analysis/src/main/java/org/jeecg/modules/native_jni/CalValuesHandler.java b/jeecg-module-spectrum-analysis/src/main/java/org/jeecg/modules/native_jni/CalValuesHandler.java
index d656f226..d08cf789 100644
--- a/jeecg-module-spectrum-analysis/src/main/java/org/jeecg/modules/native_jni/CalValuesHandler.java
+++ b/jeecg-module-spectrum-analysis/src/main/java/org/jeecg/modules/native_jni/CalValuesHandler.java
@@ -27,6 +27,4 @@ public class CalValuesHandler {
 
     public static native String analyseSpectrum(String phd, String mapLines, String phdFilePath);
 
-    public static native void demo(Demo demo);
-
 }
diff --git a/jeecg-module-spectrum-analysis/src/main/java/org/jeecg/modules/native_jni/Demo.java b/jeecg-module-spectrum-analysis/src/main/java/org/jeecg/modules/native_jni/Demo.java
deleted file mode 100644
index 3d71994f..00000000
--- a/jeecg-module-spectrum-analysis/src/main/java/org/jeecg/modules/native_jni/Demo.java
+++ /dev/null
@@ -1,7 +0,0 @@
-package org.jeecg.modules.native_jni;
-
-public class Demo {
-    public void send(String message){
-        System.out.println(message);
-    }
-}