Added own exception FileFormatException

FileFormatException.java

@@ -0,0 +1,19 @@
+import java.io.IOException;
+
+public class FileFormatException extends IOException {
+    public FileFormatException() {
+
+    }
+
+    public FileFormatException(String message) {
+        super(message);
+    }
+
+    public FileFormatException(String message, Throwable cause) {
+        super(message, cause);
+    }
+
+    public FileFormatException(Throwable cause) {
+        super(cause);
+    }
+}