Avoid using java.nio since it breaks Quest Mode in Android app

forge-core/src/main/java/forge/util/FileUtil.java

@@ -98,6 +98,35 @@ public final class FileUtil {
         return dir.delete();
     }
 
+    public static void copyFile(String sourceFilename, String destFilename) {
+        File source = new File(sourceFilename);
+        if (!source.exists()) { return; } //if source doesn't exist, nothing to copy
+
+        InputStream is = null;
+        OutputStream os = null;
+        try {
+            is = new FileInputStream(source);
+            os = new FileOutputStream(new File(destFilename));
+            byte[] buffer = new byte[1024];
+            int length;
+            while ((length = is.read(buffer)) > 0) {
+                os.write(buffer, 0, length);
+            }
+        }
+        catch (Exception e) {
+            e.printStackTrace();
+        }
+        finally {
+            try {
+                is.close();
+                os.close();
+            }
+            catch (IOException e) {
+                e.printStackTrace();
+            }
+        }
+    }
+
     public static void writeFile(String filename, String text) {
         FileUtil.writeFile(new File(filename), text);
     }