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