Notes

class Person {

MaritalState maritalState;
Person mate;
String name;

Person(String name1) {
maritalState = new MaritalState();
mate = null;
name = name1;
}

void GetMarried(Person mate) {
maritalState.marry(this, mate);
}

void GetDivorced(Person mate) {
maritalState.divorce(this, mate);
}

void Died() {
maritalState.die(this);
}

void PrintMaritalStatus() {
System.out.println(this.name + " maritalState status is " + this.maritalState.get());
}

public boolean isMarried() {
return maritalState.isMarried(maritalState);
}

public boolean isSingle() {
return maritalState.isSingle(maritalState);
}

public boolean isWidow() {
return maritalState.isWidow(maritalState);
}
}

class MaritalState {

private static final String MARRIED = "married";
private static final String SINGLE = "single";
private static final String WIDOW = "widow";

private String state;

private MaritalState(String state) {
this.state = state;
}

public MaritalState() {
this.state = "single";
}

void marry(Person person, Person mate) {
if (person.isMarried() || mate.isMarried()) {
System.out.println("MaritalState status error! At least one of you are married");
} else {
person.maritalState = new MaritalState(MARRIED);
person.mate = mate;
mate.maritalState = new MaritalState(MARRIED);
mate.mate = person;
System.out.println("Congratulations!!! " + person.name + " and " + mate.name + " are married!");
}
}

void divorce(Person person, Person mate) {
if (person.isMarried() && person.mate == mate) {
person.maritalState = new MaritalState("divorced");
System.out.println(person.name + " and " + mate.name + " are getting divorced.");
} else if (person.isSingle()) {
System.out.println("You are not married and you cannot get divorced before getting married");
} else if (person.isWidow()) {
System.out.println("Your maritalState status is widow, you cannot get divorced.");
}
}

void die(Person person) {
person.maritalState = new MaritalState("dead");
person.mate.maritalState = new MaritalState("widow");
System.out.println("Sorry for your loss, " + person.mate.name + " maritalState status is widow.");
}

public boolean isMarried(MaritalState maritalState) {
return maritalState.state.equals(MARRIED);
}

public boolean isSingle(MaritalState maritalState) {
return maritalState.state.equals(SINGLE);
}

public boolean isWidow(MaritalState maritalState) {
return maritalState.state.equals(WIDOW);
}

public String get() {
return state;
}
}

class AssignmentOOP {
public static void main(String[] args) {
Person p1 = new Person("p1");
Person p2 = new Person("p2");
Person p3 = new Person("p3");
p1.PrintMaritalStatus();
p2.PrintMaritalStatus();
p3.PrintMaritalStatus();
p1.GetMarried(p2);
p1.GetMarried(p3);
p2.Died();
p1.GetMarried(p3);
}
}