add clear history button

1 files changed, 4 insertions, 0 deletions

diff --git a/History.java b/History.java
index b1527ef..ef2807b 100644
--- a/History.java
+++ b/History.java
@@ -7,6 +7,10 @@ public class History {
         hist = new Vector<String>();
     }
 
+    public void clearHistory() {
+            hist.clear();
+    }
+
     public Vector<String> getHistory() {
         return hist;
     }