java.lang.ClassNotFoundException：Sample.java程序中的org.sqlite.JDBC错误来自xerial

我试图让Xerial的Sample类在带sqlite的Eclipse中工作，但是我一直收到错误“ ClassNotFoundException：org.sqlite.JDBC”

我从https://bitbucket.org/xerial/sqlite-jdbc/downloads下载了sqlite-jdbc-3.7.2.jar文件。将其复制到Eclipse中我的项目“ database_test”下的lib文件夹中。然后右键单击Project-> Properties-> Java Build Path-> Libraries选项卡-> Add JARs->选择jar文件。我正在尝试从此处的Xerial执行此代码：https ://bitbucket.org/xerial/sqlite-jdbc#markdown-header-usage

// load the sqlite-JDBC driver using the current class loader
Class.forName("org.sqlite.JDBC");

Connection connection = null;
try
{
  // create a database connection
  connection = DriverManager.getConnection("jdbc:sqlite:sample.db");
  Statement statement = connection.createStatement();
  statement.setQueryTimeout(30);  // set timeout to 30 sec.

  statement.executeUpdate("drop table if exists person");
  statement.executeUpdate("create table person (id integer, name string)");
  statement.executeUpdate("insert into person values(1, 'leo')");
  statement.executeUpdate("insert into person values(2, 'yui')");
  ResultSet rs = statement.executeQuery("select * from person");
  while(rs.next())
  {
    // read the result set
    System.out.println("name = " + rs.getString("name"));
    System.out.println("id = " + rs.getInt("id"));
  }
}
catch(SQLException e)
{
  // if the error message is "out of memory", 
  // it probably means no database file is found
  System.err.println(e.getMessage());
}
finally
{
  try
  {
    if(connection != null)
      connection.close();
  }
  catch(SQLException e)
  {
    // connection close failed.
    System.err.println(e);
  }
}

}}

我去过的每个站点都说过将jar文件添加到您的构建路径或类路径中，我相信我已经做到了，但是没有任何方法可以解决问题。任何帮助，将不胜感激。谢谢。