08. Solution: Builder

Solution: Builder

UdacisearchClient.java

import java.time.Duration;
import java.time.Instant;
import java.time.ZoneId;

public final class UdacisearchClient {
  private final String name;
  private final long id;
  private final int quarterlyBudget;
  private final int numEmployees;
  private final Instant contractStart;
  private final Duration contractLength;
  private final ZoneId timeZone;
  private final String billingAddress;

  private UdacisearchClient(
      String name,
      long id,
      int quarterlyBudget,
      int numEmployees,
      Instant contractStart,
      Duration contractLength,
      ZoneId timeZone,
      String billingAddress) {
    this.name = name;
    this.id = id;
    this.quarterlyBudget = quarterlyBudget;
    this.numEmployees = numEmployees;
    this.contractStart = contractStart;
    this.contractLength = contractLength;
    this.timeZone = timeZone;
    this.billingAddress = billingAddress;
  }

  public String getName() {
    return name;
  }

  public long getId() {
    return id;
  }

  public int getQuarterlyBudget() {
    return quarterlyBudget;
  }

  public int getNumEmployees() {
    return numEmployees;
  }

  public Instant getContractStart() {
    return contractStart;
  }

  public Duration getContractLength() {
    return contractLength;
  }

  public ZoneId getTimeZone() {
    return timeZone;
  }

  public String getBillingAddress() {
    return billingAddress;
  }

  @Override
  public String toString() {
    return "UdacisearchClient{" +
        "name='" + getName() + '\'' +
        ", id=" + getId() +
        ", quarterlyBudget=" + getQuarterlyBudget() +
        ", numEmployees=" + getNumEmployees() +
        ", contractStart=" + getContractStart() +
        ", contractLength=" + getContractLength() +
        ", timeZone=" + getTimeZone() +
        ", billingAddress='" + getBillingAddress() + '\'' +
        '}';
  }

  @Override
  public boolean equals(Object o) {
    if (this == o) return true;
    if (!(o instanceof UdacisearchClient)) return false;
    UdacisearchClient that = (UdacisearchClient) o;
    return id == that.id &&
        quarterlyBudget == that.quarterlyBudget &&
        numEmployees == that.numEmployees &&
        name.equals(that.name) &&
        contractStart.equals(that.contractStart) &&
        contractLength.equals(that.contractLength) &&
        timeZone.equals(that.timeZone) &&
        billingAddress.equals(that.billingAddress);
  }

  @Override
  public int hashCode() {
    return Objects.hash(
        name,
        id,
        quarterlyBudget,
        numEmployees,
        contractStart,
        contractLength,
        timeZone,
        billingAddress);
  }

  public static final class Builder {
    private String name = "";
    private long id = 0;
    private int quarterlyBudget = 0;
    private int numEmployees = 0;
    private Instant contractStart = Instant.EPOCH;
    private Duration contractLength = Duration.ZERO;
    private ZoneId timeZone = ZoneId.of("Etc/UTC");
    private String billingAddress = "";

    public Builder setName(String name) {
      this.name = name;
      return this;
    }

    public Builder setId(long id) {
      this.id = id;
      return this;
    }

    public Builder setQuarterlyBudget(int quarterlyBudget) {
      this.quarterlyBudget = quarterlyBudget;
      return this;
    }

    public Builder setNumEmployees(int numEmployees) {
      this.numEmployees = numEmployees;
      return this;
    }

    public Builder setContractStart(Instant contractStart) {
      this.contractStart = contractStart;
      return this;
    }

    public Builder setContractLength(Duration contractLength) {
      this.contractLength = contractLength;
      return this;
    }

    public Builder setTimeZone(ZoneId timeZone) {
      this.timeZone = timeZone;
      return this;
    }

    public Builder setBillingAddress(String billingAddress) {
      this.billingAddress = billingAddress;
      return this;
    }

    public UdacisearchClient build() {
      return new UdacisearchClient(
          name,
          id,
          quarterlyBudget,
          numEmployees,
          contractStart,
          contractLength,
          timeZone,
          billingAddress);
    }
  }
}

Main.java

import java.time.Duration;
import java.time.Instant;
import java.time.ZoneId;

public final class Main {

  public static void main(String[] args) {
    UdacisearchClient client =
        new UdacisearchClient.Builder()
            .setName("CatFacts LLC")
            .setId(17)
            .setQuarterlyBudget(8000)
            .setNumEmployees(5)
            .setContractStart(Instant.now())
            .setContractLength(Duration.ofDays(180))
            .setTimeZone(ZoneId.of("America/Los_Angeles"))
            .setBillingAddress("555 Meowmers Ln, Riverside, CA 92501")
            .build();

    System.out.println(client);
  }
}