You can now refer to any regular Java object from within mantra simply by using a variant on the import statement:
import java java.util.Vector;
Vector v = Vector();
v.add("hi");
v.add(34);
println(v.toString());
println(v.get(0));
println(v.get(1));
Field access works as well
for now, it translates only string and integer objects to mantra objects. For other objects, it leads them as Java objects wrapped in a JavaProxyObject.