diff --git a/代码/workspace_robo4/robocode.repository/src/main/java/net/sf/robocode/repository/root/BaseRoot.java b/代码/workspace_robo4/robocode.repository/src/main/java/net/sf/robocode/repository/root/BaseRoot.java
index 6221701..b77cfc5 100644
--- a/代码/workspace_robo4/robocode.repository/src/main/java/net/sf/robocode/repository/root/BaseRoot.java
+++ b/代码/workspace_robo4/robocode.repository/src/main/java/net/sf/robocode/repository/root/BaseRoot.java
@@ -61,6 +61,7 @@ public abstract class BaseRoot implements Serializable, IRepositoryRoot {
 	public void extractJAR() {
 		throw new UnsupportedOperationException();
 	}
+    
     @Override
 	public boolean equals(Object obj) {
 		if (obj instanceof IRepositoryRoot) {