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Java Hibernate Basics Getting Started with Hibernate Using the Builder Pattern

Jason Anders
MOD
Jason Anders
Treehouse Moderator 145,858 Points
Posted by Jason Anders
Jason Anders
Treehouse Moderator 145,858 Points

Hibernate and ConnectionBuilder

Maybe I've just been staring at this too long, but I'm positive what I'm entering is correct. Please find the tiny (and probably silly) error that I'm making.

I keep getting "Bummer! You haven't properly called the withJdbcVendor method on the ConnectionBuilder object."

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 ConnectionBuilder()
          .withJbdcVendor("sqlite")
          .withDb("languages")
          .withUser("th_user", "mysuperlongpassword");
  }
}

2 Answers

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

Hey you! Long time no type :smile:

Here's a couple of things. And one is tiny tiny tiny. You transposed two letters. Also, you need to call the build method on your newly made Connection :smile:

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 ConnectionBuilder()
          .withJdbcVendor("sqlite")    //That's jdbc... not jbdc as you've written
          .withDb("languages")
          .withUser("th_user", "mysuperlongpassword");
    c.build();     //  Call me to build the connection!
  }
}
Jason Anders
Jason Anders
Treehouse Moderator 145,858 Points
Jason Anders
Jason Anders
Treehouse Moderator 145,858 Points

Yep... knew it was going to be something simple. :relieved: And I was hoping you'd find it for me. :smiley:

I did have the build() call there and then I didn't and then I did... I even copy/pasted the names... but... Think maybe time to call it a day. Lol.

Thank you so much!! :dizzy:

karthik Vaithi
karthik Vaithi
1,379 Points
karthik Vaithi
karthik Vaithi
1,379 Points

Had same error but was getting the String values wrong and it works now when I corrected the String values. Where was I supposed to derive those data from? Fairly certain I didn't see them in the question.

Talking about - sqlite, languages, th_user, mysuperlongpassword

SANTIAGO MARTINEZ
SANTIAGO MARTINEZ
4,226 Points
SANTIAGO MARTINEZ
SANTIAGO MARTINEZ
4,226 Points

It was already given under the comment line:

// TODO: User the builder here instead Connection c = new Connection("sqlite","languages","th_user","mysuperlongpassword"); }