java - 如何为 java netbeans 应用程序设置在线数据库

Question

我正在为我的 java 应用程序尝试在线数据库连接，但似乎我的数据库连接不正确这是我的 java 代码：

private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {                                         
    // TODO add your handling code here
    try {
        Class.forName("com.mysql.jdbc.Driver");
        Connection con = DriverManager.getConnection("sql101.epizy.com/epiz_26206530_sekolah","LOGIN","PASSWORD");
        String query = "select * from users where username=? and password=?";
        PreparedStatement pst = con.prepareStatement(query);
        pst.setString(1, jTextField1.getText());
        pst.setString(2, jPasswordField1.getText());
        ResultSet rs = pst.executeQuery();
        if(rs.next()) {
            JOptionPane.showMessageDialog(null, "Login Berhasil");
            jLabel7.setText(rs.getString(1));
            welcome well = new welcome();
            this.setVisible(false);
            well.setVisible(true);
        }
    } catch (Exception e) {
    }
}   
                                 

我已经输入了 MySQL JDBC 驱动程序库，顺便说一下，我正在使用来自https://infinityfree.net/的在线数据库

标签： javamysqldatabasenetbeans