java.lang.ClassNotFoundException：org.apache.derby.jdbc.EmbeddedDriver（包括JAR）

Question

我试图启动数据库并在其中创建一个表，但由于某种原因，我继续运行catch语句而不是加载驱动程序：

servlet：

!important

处理jsp，它由索引html文件上的按钮调用。

public class dbintial {
Connection con = null;
Statement stat = null;

public String driver = "org.apache.derby.jdbc.EmbeddedDriver";

public  dbintial() {
    System.out.println("intialized");

    try {

        System.out.println("intialized");

        Class.forName(driver);

        System.out.println("driver loaded");

        //get connection
        con = DriverManager.getConnection("jdbc:derby:/Users/Hady/Downloads/v5/web/hady;create=true");
        System.out.println("Connected");

        //create statement
        stat = con.createStatement();
        System.out.println("Stat created");

        //stat.executeUpdate("CREATE table user5");

        stat.executeUpdate("create table user22s34 (email varchar(25), password varchar(25), "
                + "username varchar(25), primary key(email))");

        System.out.println("Stat executed");

    } catch (ClassNotFoundException ex) {
        ex.printStackTrace();
        //Logger.getLogger(dbintial.class.getName()).log(Level.SEVERE, null, ex);
        System.out.println("1");

    } catch (SQLException ex) {
        ex.printStackTrace();
       // Logger.getLogger(dbintial.class.getName()).log(Level.SEVERE, null, ex);
        System.out.println("2");
    }
        try {
            con.close();
        }
        catch (SQLException e){
            e.printStackTrace();
        }
}

我安装了所有罐子。在Apache服务器上运行。