无法连接到我的SQL数据库

所以我在使用Java连接MySQL时遇到了问题.继承我的代码:

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;


public class DBAccess {
    private String Host;
    private String User;
    private String Password;

    public DBAccess() throws ClassNotFoundException, SQLException{
    Class.forName("com.mysql.jdbc.Driver");
    Password = "password";
    Host = "jdbc:mysql://localhost/worlddb";
    User = "root";
    @SuppressWarnings("unused")
    Connection connect = DriverManager.getConnection(Host,User,Password);
        System.out.println("Connected!"); 
    }
    public void RetreiveData(){

    }
    public void ChangeData(){
    }

}

我得到的错误是线程"主"中的异常

com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'worlddb'

http://postimg.org/image/593stjvjx/ 在mySQL工作台中,我的连接名称是"worlddb"主机名是Liquidus(这是localhost)

socket是MySQL

港口:3306

为什么是这样？