mysql – Communication link failed – Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException

I have created a database on phpmyadmin and when I try to export data there, I get "Communication link failure, exception in the wire" AWT- EventQueue-0 "java.lang.NullPointerException". I use XAMPP to access phpmyadmin

public class MyConnection
{
public static connection getConnection () {
Connection con = null;

try{
Class.forName ("com.mysql.jdbc.Driver");
con = DriverManager.getConnection ("jdbc: mysql: // localhost / java_login_register", "root", "");

}
catch (Exception ex) {
System.out.println (ex.getMessage ());

}
return con;
}   

}

// I created this class to connect to the database.

// private void jButton_Register_ActionPerformed (java.awt.event.ActionEvent evt) {
// TODO adds your manipulation code here:

String fname = jTextField_FN.getText ();
String lname = jTextField_LN.getText ();
String uname = jTextField_UN.getText ();
String pass = String.valueOf (jPasswordField_PASS.getPassword ());
String re_pass = String.valueOf (jPasswordField_REPASS.getPassword ());


SimpleDateFormat dateformat = new SimpleDateFormat ("yyyy-MM-dd");
String bdate = dateformat.format (jDateChooser_BDATE.getDate ());
String address = jTextArea_ADDRESS.getText ();


PreparedStatement ps;
String query = "INSERT INTO" the_app_users (u_fname, u_name, u_uname, u_pass, u_bdate, u_address) VALUES (?,?,?,?,?,? ";

try {
ps = MyConnection.getConnection (). prepareStatement (query);

ps.setString (1, fname);
ps.setString (2, lname);
ps.setString (3, uname);
ps.setString (4, bdate);
ps.setString (5, address);

if (ps.executeUpdate ()> 0)
{
JOptionPane.showMessageDialog (null, "New user added");
}


} catch (SQLException ex) {
Logger.getLogger (RegisterForm.class.getName ()). Log (Level.SEVERE, null, ex);
}

Save the site as a template for a modern team and a communication site in SharePoint Online

No, Modern Team / Communication sites do not support the backup function as a template, in part because it was a bad idea in the first place and because they have the publishing feature enabled at any time without the possibility to disable it.

The closest to the template functionality is the site design.

odata error when connecting to a table – internet communication error ssL connection error

I receive this error when I try to connect my odata endpoint to the board

can anyone suggest how to solve this problem?

Thank you.

internet communication error ssl connection error

Branding and communication for a casino

Hello everyone, I have a question about your branding experience. We have a casino website alive and now, after a while to be in the market, we wish to assign it an appropriate branding strategy. Since the subject of the casino is not very happy, we have trouble starting our content management and communication. Does anyone already have experience in branding – then communication and content management – for this type of service? Thank you Marek.

there was a communication problem with the Google servers on tablet

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decentralization – How does Bitcoin use its communication protocol and database model?

In terms of Bitcoin communication protocol, how does Bitcoin allow nodes to communicate with each other?

Is the Bitcoin communication protocol identical to IPFS (Interplanetary File System)? If not, is it a good idea to use IPFS for block communication? IPFS can transfer a large amount of data, why not send Blockchain data through it?

Secondly, I discovered on Stack Exchange that Bitcoin uses LevelDB to store data. Does this mean that there is a central server / authority on which LevelDB runs the entire chain? If so, how does this make Bitcoin decentralized? If this is not the case, is LevelDB running on each node?

penetration test – How to identify the communication protocol used in a wireless device?

I really hope this is the right place to ask.

I need to analyze a baby monitor to detect any weaknesses in security or confidentiality.

The data sheet of the baby monitor indicates that it uses the ISM 2400 ~ 2483.5 MHz tapes to transfer video and audio information between the camera and the monitor. He also uses FHSS and GFSK, which suggests to me that he could use something like Bluetooth or Zigbee as a protocol.
I got my hands on a SDR (HackRF) and peeked at the radio waves of the baby monitor via SDRSharp. I would like to know the communication protocol in order to be able to collect the signals and possibly decipher or deny the information.

I do not know how to identify the type of communication protocol used. I've been trying to use Wireshark to check if it's just simple IP packets, but I have not received anything from that side.

I do not even know if this approach is the right one. I would use the protocol identified to research the specifications and understand the frequency hopping function in order to try to record the signals at the right frequencies.

Some tips or resources would be greatly appreciated.

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LIVE | 93.58.108.138:3002 | 0.49 | Unknown | Unknown | | Unknown | Blacklist: yes | Checked at http://dichvusocks.us
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dichvusocks
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Evaluation: 5

.

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LIVE | 216.144.230.233:15993 | 0.323 | SOCKS5 | California | 90014 | 216.144.230.233.static.quadranet.com | United States | Checked at https://tisocks.net
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LIVE | 162.243.210.52:60285 | 0,032 | SOCKS5 | New York | 10011 | yncu.co | United States | Checked at https://tisocks.net
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Reviewed by tisocks sure
.
PROXIES SOCKS PROXY LIST 20:25 FROM TISOCKS.NET
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If you need Socks5, please consult the service and add funds via PM, BTC WMZ, WEX. Thank you all !!
Add a fund: https://tisocks.net/addfund
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LIVE | 50.62.31.203:13467 | 0,247 | SOCKS5 | Arizona | 85260 | ip-104-238-125-119.ip.secureserver.net | United States | Checked at https://tisocks.net
LIVE | 216.144.230.233:15993 | 0.323 | SOCKS5 | California | 90014 | 216.144.230.233.static.quadranet.com | United States |

Evaluation: 5

.

css – SharePoint Online Script Editor Site Communication – applies changes to all pages

I'm using an SPFX script editor to change the color of the header of the home page. From now on, when I visit other pages of the SharePoint site, such as Site Content, I do not see the changes applied to the header.

How can I make sure the changes are applied to the site? Is it possible to modify the master page on the communication site?