Joint joint = joints.get(i);
drawJoint(g, joint);
}
ArbiterList arbs = world.getArbiters();
for (int i=0;i<arbs.size();i++) {
Arbiter arb = arbs.get(i);
Contact[] contacts = arb.getContacts();
int numContacts = arb.getNumContacts();
for (int j=0;j<numContacts;j++) {