Builder Example

Person.java

public class Person {
  
  /* Attributes */
  protected String name;
  protected String email;
  protected int age;
  protected String adress;
  protected String job;
  protected boolean married;
  
  public Person(String name, String email, int age, String adress, String job, boolean married) {
    this.name = name;
    this.email = email;
    this.age = age;
    this.adress = adress;
    this.job = job;
    this.married = married;
  }
  
  /* Some getters and setters...  */
  
}

/* Usage */
Person reda = new Person("Reda", "email@xxx.com", 40, "Somewhere", "Some Job", false);

PersonBuilder.java

import Person;

public clacc PersonBuilder {
  
  /* Attributes */
  protected String name;
  protected String email;
  protected int age;
  protected String adress;
  protected String job;
  protected boolean married;
  
  public PersonBuilder setName(String name) {
    this.name = name;
    return this;
  }
  
  public PersonBuilder setEmail(String email) {
    this.email = email;
    return this;
  }
  
  public PersonBuilder setAge(int age) {
    this.age = age;
    return this;
  }
  
  public PersonBuilder setAdress(String adress) {
    this.adress = adress;
    return this;
  }
  
  public PersonBuilder setJob(String job) {
    this.job = job;
    return this;
  }
  
  public PersonBuilder setMarried(boolean married) {
    this.married = married;
    return this;
  }
  
  /* Final step, return the actual Person instance.  */
  public Person make(void) {
    return new Person(this.name, this.email, this.age, this.adress, this.job, this.married);
  }
}

/* Usage — More readability */
Person reda = new PersonBuilder()
                  .setName("Reda")
                  .setEmail("email@xxx.com")
                  .setAge(40)
                  .setAdress("Somewhere")
                  .setJob("Some Job")
                  .setMarried(false)
                  .make();