@Override
public void run() throws Exception {
Scanner input = new Scanner(System.in);
System.out.println("Enter Id?");
String id = input.nextLine();
x = X_MEM.findMemberById(id);
address = x.getAddress();
System.out.println("Enter address?");
String address = input.nextLine();
x.setAddress(address);
System.out.println("Address updated.");
}
@Override
public void undo() {
String temp = x.getAddress();
x.setAddress(address);
address = temp;
}