package FifthExample;

//Here is an example of a simple class called 'Person'. It has two attributes and four methods.

//Note that the attributes are declared private so that they can only be accessed by the methods,

//not by anything outside the class.

//We are also showing the concept of chaining constructors.

// Finally, we're showing an example of a copy constructor where the argument passed to the constructor

// is another Person object of which we then do a copy of the attributes of the original.

class Person {

private String name;

private int age;

public static int numberOfPeople;

public Person() {

Person.numberOfPeople++;

System.out.println("number of people is " + Person.numberOfPeople);

System.out.println("Default constructor in chain");

}

// This is the second constructor called in the chain. Note that it calls

// the default constructor last

// and then sets the name.

public Person(String n) {

this();

this.name = n;

}

// This will be the first constructor called in the chain. It then calls the

// second constructor with

// only the name parameter and sets the age itself.

public Person(String n, int a) {

this("Barack Obama");

this.age = a;

}

// This is the copy constructor, notice that we expect another Person object

// and then we copy the

// attributes over.

public Person(Person p) {

this.name = p.name;

this.age = p.age;

}

public static String getEmployer() {

return ("Morgan Stanley");

}

@Override

public boolean equals(Object o) {

if (o == null) {

return false;

}

final Person other = (Person) o;

if (this.name != other.name && this.age != other.age) {

return false;

}

return true;

}

int getAge() {

return this.age;

}

String getName() {

return this.name;

}

void setAge(int a) {

this.age = a;

}

void setName(String n) {

this.name = n;

}

}