package p;
enum A {
RED, GREEN, BLUE, YELLOW;
A buddy;
public A getBuddy() {
return buddy;
}
public void setBuddy(A b) {
buddy= b;
}
}
class User {
void m() {
A.RED.setBuddy(A.GREEN);
if (A.RED.getBuddy() == A.GREEN) {
A.GREEN.buddy= null;
}
}
}