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Connecting different user to 1 server(database derby) in netbeans using java

I made an inventory system in netbeans using the language java and i connect it to derby as my database it is already working as a whole system but I want to have a client-server functionality what I mean is I want my program to have a server which holds the database(different computer) and different users with different computers which they can save/view data at the same time to the database means they are connected in one network.
Working with multiple connections to a single database.
What code can I use or method or do I have to import something?
I did some research and the only thing that I found is socket which can be used to create a chat between server and a client.
But I only tried the IP 127.0.0.1 for the client since I am making running the server and the client in the same computer.
And also can I open the connection of the server in the client form and send data like SQLQuery so I can save it in the database of the server?
Where can I see examples for these? Please help thanks

Yes, Derby supports a client-server configuration of your application.
Deploying your application in the client-server configuration is straightforward:
Deploy the Derby Network Server, for example by running the startNetworkServer script that is included with the Derby distribution.
Ensure that derbyclient.jar is in your application's CLASSPATH, and that you register "org.apache.derby.jdbc.ClientDriver" with the JDBC DriverManager.
Change your JDBC Connection URL from jdbc:derby:<db details> to jdbc:derby://<host:port>/<db details>.
If this is your first time using Derby, I strongly recommend working your way through the Derby tutorial at https://db.apache.org/derby/docs/10.12/getstart/index.html
For more information about running the Derby Network Server to service database requests for your applications, read the Derby Admin Guide: https://db.apache.org/derby/docs/10.12/adminguide/index.html

Use the IP 0.0.0.0 or for all connections in the server. The the connection url should include the name of the server or the ip address of the server in the network. When you use ip 127.0.0.1 or localhost derby can only accept connections to the database in the same machine, in this case localhost. All of this can be done by your network application server

Connecting to database on users computer

I am currently using Netbeans 8 and trying to make the MySQL database connect to the program without downloading MySQL on to the users computer or running a server, so the MySQL file must be local. How may I proceed is there a way to package with the jar of the program or should I proceed another way.
Also here is the code that connect to the database.
Class.forName("com.mysql.jdbc.Driver");
Connection conn = DriverManager.getConnection("jdbc:mysql://localhost:3306/chutesandladders", name, password);
Statement update = conn.createStatement();

It is not possible to package a MySQL "file" in JAR. MySQL always runs as a server process that you can connect to using JDBC.
The JDB URL dbc:mysql://localhost:3306/chutesandladders from your question contains the hostname localhost and the port 3306 where the MySQL server is running.
If you want a client on a different machine to connect to this server, you must use the real hostname of the server in the JDBC URL. Of course you must allow access from this client to the server.
Edit: If you must use a relational database but can not access a server, you should use an embedded database. A widely used is H2.

Connecting my Android App to a database

I am new to Android and am trying to create an App which can connect to a database.
Web Server = Apache Tomcat
Database = MySQL
Web Service = HTTP Requests and Servlets?
I have never used PHP before, is there a way that I can connect to the database using only Servlets?
Also, would I need a JDBC Driver and SQL Server?

yes you need JDBC driver to connect to mysql DB on your servlet side, but if you're using MySQL, why you need SQL server for?? you can take a look at this blog post on how to send request from your android app to servlet.

How to connect Java desktop application to an online mysql database?

As titled, I want to make my desktop java application to connect to an online mysql db ?! How can I reach it such connection to be able to add and retrieve data?!

Download the connector from here. Add it to your classpath and in the code:
// This will load the MySQL driver, each DB has its own driver
Class.forName("com.mysql.jdbc.Driver");
// Setup the connection with the DB
connect = DriverManager
.getConnection("jdbc:mysql://remoteUri/database-name?"
+ "user=user&password=userpw");

By all means, a JDBC connection is the way to go. But, you must make sure that the MySQL users have access to the database from another IP Address (i.e. your desktop application).
MySQL users are set up so that they can access the database on the local machine. Therefore, you have to allow access to the MySQL database from any host. Please see the following article which shows how to do that.

You could directly connect and let the queries run over the network (via JDBC)example: vogella.com
You build an RESTful Service, there are lots of tutorials as Example;
RESTful Web Services API using Java and MySQL

do i need a tomcat server to make java jdbc swing application to run on lan

I am attempting to create a MySQL and Java client app for my home network.On the server machine I successfully connected to the MySQL as root
Now I want to connect to MySQL from my client PC using the Java client program,
How to do this??
Do i need to install Tomcat Server to run on server for this.
I am using Windows 7 on all my clients and server machines.

Tomcat server is used for web applications.You just need to create a JDBC code and in the URL string just give the ip address of the system where mysql is installed.For example
connection = DriverManager
.getConnection("jdbc:mysql://192.168.1.205:3306/database_name","root", "password");
Also if you have not granted the permission in mysql then grant it .See this for granting permission for access to mysql on remote system

Depending on what you want to achieve, you need to establish a JDBC connection to the server. Take a look at the JDBC trail for more details.
This will allow you to connect directly from you client machine to your database server. This would be done using the required JDBC connection URL for the MySQL connection, for example jdbc:mysql://[host][,failoverhost...][:port]/[database] »
[?propertyName1][=propertyValue1][&propertyName2][=propertyValue2]..., check out Driver/Datasource Class Names, URL Syntax and Configuration Properties for Connector/J for more details.
You may also need to configure your MySQL server to allow remote access before you can connect

You just need to do two things:
Make sure the server hosting MySQL allows incoming connections
Write JDBC code and use your MySQL server hostname/ipaddress in the jdbc string to connect and use it.