diff --git a/readme.md b/readme.md
index de57c85..27835e0 100644
--- a/readme.md
+++ b/readme.md
@@ -9,7 +9,7 @@ $ cargo build
 
 编译java代码
 
-```java
+```
 $ cd ../../
 $ javac java/src/HelloWorld.java 
 $ java java/src/HelloWorld