public class XMAS
{
    public XMAS (boolean debug)
    {
        _debug = debug;
    }

    private boolean _debug;
}
@@ -1,12 +1,33 @@
+import java.util.*;%0A%0A
 public class
@@ -103,16 +103,208 @@
 %0A    %7D%0A%0A
+    public Vector%3CInteger%3E validate (Vector%3CInteger%3E input, int preamble)%0A    %7B%0A        Vector%3CInteger%3E invalid = new Vector%3CInteger%3E();%0A        int index = 0;%0A%0A        return invalid;%0A    %7D%0A%0A
     priv

Update XMAS.java