diff --git a/src/windowInterface/MyInterface.java b/src/windowInterface/MyInterface.java
index 67ae441..cf2b1ef 100644
--- a/src/windowInterface/MyInterface.java
+++ b/src/windowInterface/MyInterface.java
@@ -23,6 +23,7 @@ import java.io.FileReader;
 import java.io.FileWriter;
 import java.io.IOException;
 import java.util.ArrayList;
+import java.util.Arrays;
 import java.awt.event.ActionEvent;
 
 public class MyInterface extends JFrame {
@@ -326,7 +327,8 @@ public class MyInterface extends JFrame {
 		String fileName=SelectFile();
 		if (fileName.length()>0) {
 			ArrayList<String> content = mySimu.getSaveState();
-			writeFile(fileName, (String[]) content.toArray());
+			String[] strArr = Arrays.copyOf(content.toArray(), content.toArray().length, String[].class);
+			writeFile(fileName, strArr);
 		}
 	}
 
@@ -334,7 +336,8 @@ public class MyInterface extends JFrame {
 		String fileName=SelectFile();
 		if (fileName.length()>0) {
 			ArrayList<String> content = mySimu.getRule();
-			writeFile(fileName, (String[]) content.toArray());
+			String[] strArr = Arrays.copyOf(content.toArray(), content.toArray().length, String[].class);
+			writeFile(fileName, strArr);
 		}
 	}
 
@@ -342,7 +345,8 @@ public class MyInterface extends JFrame {
 		String fileName=SelectFile();
 		if (fileName.length()>0) {
 			ArrayList<String> content = mySimu.getAgentsSave();
-			writeFile(fileName, (String[]) content.toArray());
+			String[] strArr = Arrays.copyOf(content.toArray(), content.toArray().length, String[].class);
+			writeFile(fileName, strArr);
 		}
 	}