a)
Isolate iso = new OutOfProcessIsolate(null, (String[])null);
does not throw any exceptions until iso.start() is attempted
b)
Isolate iso = new OutOfProcessIsolate("myclass", (String[])null);
will throw NPE on start, one has to write
Isolate iso = new OutOfProcessIsolate("myclass",new String[]{""} );
if no arguments are needed
c)
arguments are not copied, if array contents is changed between OOPIsolate creation and start, new arguments will be used - breaks incapsulation, theoretical security risk