package example.builder;

import org.apache.commons.lang3.builder.EqualsBuilder;

import org.apache.commons.lang3.builder.HashCodeBuilder;

import org.apache.commons.lang3.builder.ToStringBuilder;

public class Person {

private String firstName;

private String middleName;

private String lastName;

private int age;

// default constructor so the builder can create an empty version

private Person() {

}

private Person(Person person) {

this.firstName = person.getFirstName();

this.middleName = person.getMiddleName();

this.lastName = person.getLastName();

this.age = person.getAge();

}

public String getFirstName() {

return firstName;

}

public String getMiddleName() {

return middleName;

}

public String getLastName() {

return lastName;

}

public int getAge() {

return age;

}

@Override

public boolean equals(Object o) {

return EqualsBuilder.reflectionEquals(this, o);

}

@Override

public int hashCode() {

return HashCodeBuilder.reflectionHashCode(this);

}

@Override

public String toString() {

return ToStringBuilder.reflectionToString(this);

}

public static Builder getBuilder() {

return new Builder();

}

public static final class Builder {

private final Person person = new Person();

public Builder firstName(String firstName) {

this.person.firstName = firstName;

return this;

}

public Builder middleName(String middleName) {

this.person.middleName = middleName;

return this;

}

public Builder lastName(String lastName) {

this.person.lastName = lastName;

return this;

}

public Builder age(int age) {

this.person.age = age;

return this;

}

public Builder name(Name name) {

this.person.firstName = name.getFirstName();

this.person.middleName = name.getMiddleName();

this.person.lastName = name.getLastName();

return this;

}

//a new person is created here so that if a method in this instance of the Builder is called it will not change the value of the Person being returned.

public Person build() {

return new Person(person);

}

}

}