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Java Hibernate Basics Getting Started with Hibernate Using the Builder Pattern

Maira Kotsovoulou
Maira Kotsovoulou
2,146 Points

Error in exercise

Gif g1 = new Gif.GifBuilder("maira logo") .withdateUploaded(LocalDate.of(2020,10,13)) .withUsername("mairak") .withFavorite(true).build(); The first one is ok... Following the same pattern I created : Connection c = new Connection.ConnectionBuilder() .withJdbcVendor("sqlite") .withDb("languages") .withUser("th_user","mysuperlongpassword") .build();

But Check Work still find it wrong...

com/teamtreehouse/builder/Connection.java
package com.teamtreehouse.builder;

public class Connection {
  private String jdbcVendor;
  private String dbName;
  private String username;
  private String password;

  public Connection(String jdbcVendor, String dbName, String username, String password) {
    this.jdbcVendor = jdbcVendor;
    this.dbName = dbName;
    this.username = username;
    this.password = password;
  }

  public Connection(ConnectionBuilder builder) {
    this.jdbcVendor = builder.jdbcVendor;
    this.dbName = builder.dbName;
    this.username = builder.username;
    this.password = builder.password;
  }

  public static class ConnectionBuilder{
    private String jdbcVendor;
    private String dbName;
    private String username;
    private String password;

    public ConnectionBuilder(){}

    public ConnectionBuilder withJdbcVendor(String jdbcVendor) {
      this.jdbcVendor = jdbcVendor;
      return this;
    }

    public ConnectionBuilder withDb(String dbName) {
      this.dbName = dbName;
      return this;
    }

    public ConnectionBuilder withUser(String username, String password) {
      this.username = username;
      this.password = password;
      return this;
    }

    public Connection build() {
      return new Connection(this);
    }
  }
}
Application.java
import com.teamtreehouse.builder.Connection;
import com.teamtreehouse.builder.Connection.ConnectionBuilder;

public class Application {
  public static void main(String[] args) {
    // TODO: User the builder here instead
    Connection c = new Connection.ConnectionBuilder()
      .withJdbcVendor("sqlite")
      .withDb("languages")
      .withUser("th_user","mysuperlongpassword")
      .build();
  }
}

2 Answers

Jennifer Nordell
seal-mask
STAFF
.a{fill-rule:evenodd;}techdegree
Jennifer Nordell
Treehouse Teacher

Hi there, ACG Treehouse1! You're doing terrific! The problem here is how you're calling the ConnectionBuilder(). You've already specified to import it from that namespace.

You have:

new Connection.ConnectionBuilder()

But because you've explicitly imported that, you should use:

new ConnectionBuilder()

Hope this helps! :sparkles: