Initial commit

src/main/java/dslab/nameserver/InvalidDomainException.java

@@ -0,0 +1,13 @@
+package dslab.nameserver;
+
+public class InvalidDomainException extends Exception {
+    private static final long serialVersionUID = 1L;
+
+    public InvalidDomainException(String message) {
+        super(message);
+    }
+
+    public InvalidDomainException(String message, Throwable cause) {
+        super(message, cause);
+    }
+}