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java常用知识:找不到指定类时异常

 
import java.util.*;
import java.sql.*;
public class Test067 {
    public static void main(String[] args) throws Exception {
        Connection conn = null;
        Statement stmt = null;
        ResultSet rst = null;
        String s = "";
        Class.forName("com.mysql.jdbc.Driver");
                                                // 注册驱动程序
        conn = DriverManager.getConnection(
                  "jdbc:mysql://localhost:3306/myuser", "admin", "123456");
                                                // 获得数据库的连接
        stmt = conn.createStatement();
                                                // 创建会话声明
        rst = stmt.executeQuery("select * from user");
        while (rst.next()) {                   // 对获得的数据进行格式转换
            System.out.print(s = new String(rst.getString(1).getBytes(
                      "ISO-8859-1"), "GBK")
                      + "--");
            System.out.print(s = new String(rst.getString(2).getBytes(
                      "ISO-8859-1"), "GBK")
                      + "--");
            System.out.print(s = new String(rst.getString(3).getBytes(
                      "ISO-8859-1"), "GBK")
                      + "--");
            System.out.print(s = new String(rst.getString(4).getBytes(
                      "ISO-8859-1"), "GBK"));
            System.out.println();
        }
    }
}

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