diff --git a/problems/背包理论基础01背包-1.md b/problems/背包理论基础01背包-1.md
index 852c489b..36544256 100644
--- a/problems/背包理论基础01背包-1.md
+++ b/problems/背包理论基础01背包-1.md
@@ -268,7 +268,7 @@ int main() {
 Java：
 
 ```java
-		public static void main(String[] args) {
+    public static void main(String[] args) {
         int[] weight = {1, 3, 4};
         int[] value = {15, 20, 30};
         int bagSize = 4;