This is the first time I am going to deploy the Java Desktop Application with MS Access DB and discovered JAR package is not getting database access other then my development PC though I had the MS access DB in the same directory of the JAR file I have copied after Build the application. And I understand that I cannot connect MS access DB I created with ODBC connection of my PC. Now my question is
How can I deploy Java Desktop Application with MS access BD which will run in any computer where manual ODBC connection to the MS ACCESS DB for every computer will not require ?
I am not trying to connect MS access DB within a net work rather I am trying run this app where MS Access DB is already installed and my supplied DB will be with the JAR file and I want to access the DB I have provided from Java Front End Application.
Please help.
First you should get ODBC driver for Access database. Some computers may don't have it.
After you install that driver you should create ODBC Data Source on computer. I have no idea how to do it in Java, but ODBC Data Source configurations are stored in registry and you can add your Data Source.
Google "registry add odbc data source" or "Can I Create and Delete a DSN Using a Script" (second one is title of good article i found.
Probably you can access registry from java without any problems.
You can also use one of install-maker programs. Some of them have something like "Add Data Source" functionality.
Related
I'm trying to develop an Java Application under Netbeans IDE and I'm using Wampserver as server software. So I try to create an JDBC to access my data base remotely (under my lan) but noting happen even by changing the configuration file in wampserver according to what i found on the internet. if any one have an idea how we do that please help.
I have a MySQL database installed in my Amazon AWS instance (not RDS). The same database is installed in a personal computer, offline.
You have to connect to the amazon database via SSH, it is in a Ubuntu instance.
The online database contains information of 1000 users. The offline versions contain information only for that particular user.
Users use a Java desktop application to feed data into the local database. When they click on the Sync button, the 2 databases should be synced. Remember here that the desktop offline database should "upload" the newly inserted things to the online database while it should "download" new data (if any) related only to the particular user .
The system cannot be a manual way where someone manually turn on a 3rd party application, use putty or connect SSH, configure the databases etc and sync. The system should be embedded to the desktop java application.
I looked into things like SymmetricDS and it is too much complicated, not sure about the SSH access too.
Any idea about how to do this in an easy way? I am also creating a REST API thinking I can handle this manually, but if there is already built system/API I am onto it.
This is very simple and doable. Just use MySQL replication.
MySQL replication
Let me know if you want any further details. I can give you working model of my.cnf as well if required.
Br//
I have recently put all my java EE projects into my google drive so i can access them on my laptop and desktop computer. Some of my projects have a database component which I have the database stored in a MySQL server. Is there a way that I can export this database and just access it from like a database file which I can store in my project file so I can use it on both my laptop and desktop computer?
This is really what I would like:
-Be able to work on my java EE projects that have a database on both my computers
-Store my MySQL Server databases in a file which can go in my project folder then use java to access that database instead of going through the server
Any alternate ways of doing this would help me out this is just one way I can think of doing.
Note: I am using my laptop on the go so my desktop computer wont always be accessible from my laptop neither will I have an active internet connection always.
Thanks
Install MySQL on your laptop, then transfer database using backup/restore, e.g. using mysqldump. See https://dev.mysql.com/doc/refman/5.0/en/backup-and-recovery.html
I developed an application with a java db database .I cannot access the database records when I close the netbeans IDE with the message "Error connecting to server Localhost on port..." My connection code to the Database is :
String host="jdbc:derby://localhost:1527/Employee;create=true";
String user="admin";
String pass="admin";
con=DriverManager.getConnection(host,user,pass);
How do I fix the problem?
Netbeans automatically starts the Derby server; you can see that in the "Services" tab (Ctrl-5).
You'll have to start the database server by hand if you don't use Netbeans; see the doc.
Presumably your Derby database is hosted in NetBeans? You'll need to create a standalone database.
You would have to probably start your database before connecting (you are using server mode). Have a look into Vogella tutorial on Derby db connection from java application: http://www.vogella.de/articles/ApacheDerby/article.html
I guess NetBeans has an embedded DB instance.
Try to use
jdbc:derby:/MyFolder/MyDatabase/Employee;create=true
or
jdbc:derby:C:\MyFolder\MyDatabase\Employee;create=true
if you do not need to access the DB from multiple applications.
You can use JavaDB (aka Derby) either by connecting to a JavaDB Network Server or by using it as an embedded DB when your application opens the DB files itself.
Currently, your application is connecting to a Network Server started by NetBeans, as your URL is telling to connect to port 1527 on localhost, i.e. your system.
What you need to do is tell your application to use JavaDB as an embedded database, i.e. it should manage the database itself instead of getting Netbeans to do it instead. You can do this just be changing the URL to something like:
jdbc:derby:Employee;create=true
You may need to tweak that URL depending on where the database files are stored relative to your application's working directory.
Only one application can have the DB open at one time. So when you're doing this NetBeans won't be able to open the database, and if NetBeans has the database open your application won't be able to open it. So you may find you want to reconfigure NetBeans as a DB client.
the simplest way of dealing with these problems is creating batch files..
first of all build your java database program.. the tricky part is to start the server. the jderby is a server so it needs to be started.. that's why you start the server in netbeans. so download db derby files from "http://db.apache.org/derby/releases/release-10.8.2.2.html". after you download these files, copy your netbeans project in those db jderby files.. go and copy your database folders from where they will be saved.. and paste them in the db jderby files.. now open notepad and type
#echo
start (PATH)
start (PATH)
the first path take the path of the file named start network server.bat
the second path take the path of the jar file of your main project.
Now save your the notepad as setup.bat and run the batch file afterward.. and ur program will start the server and running your application at once...
NB: you can use a different name from setup, any of your choice but the extension bat must be available
Hi recently I had created a Java application included database with Microsoft Access. I had wrapped it to jar file using eclipse. I pass the jar file to my friend to try to use it. But my friend told me that that is no database connection. How can i include the microsoft access in the jar file. Which mean when my friend double click the jar file it will auto configure the microsoft access database? is that possible?
Actually you don't need a package access with your application, since all versions of windows include a copy of the jet database engine. In other words you can use windows scripting to open up an access database on a windows computer without having installed ms access at all. The component or database engine part is all that you need to open in read those access database files.
Here a windows script to open a access database and write a column out to a text file:
Set dbEng = CreateObject("DAO.DBEngine.36")
strMdbFile = "C:\Docs\MultiSelect.mdb"
Set db = dbEng.OpenDatabase(strMdbFile)
strQuery = "select * from contacts"
Set rs = db.OpenRecordset(strQuery)
rs.MoveFirst
If rs.EOF = True Then
Quit
End If
strTextOut = "C:\t5.txt"
Set fs = Wscript.CreateObject("Scripting.FileSystemObject")
Set ts = fs.OpenTextFile(strTextOut, 2, True)
'2 = write, 1 = read
Do While rs.EOF = False
strOutText = rs("LastName")
ts.Writeline strOutText
rs.MoveNext
Loop
ts.Close
rs.Close
So there is no requirement to package or install the jet database engine width your application since that component is available in windows.
It's probably not too important, but I should point out that there's a distinct difference between ms access the developer's tool to let you write code, build forms, and build reports, and that of the database engine that access developers, vb6, vb.net and in your case Java can use to read an access database file. You don't need ms-access installed here, but only the database engine. That database engine is included with every copy of windows.
First of all: does your friend has a MS Access runtime, maybe he needs it? Does he configured the Microsoft Access ODBC Data Source?
Please take a look at following links: Jackcess - java library for reading and writing to MS Access file (no runtime needed), SQLLite - another file RDMS. Please consider to use the Apache Derby project - you can embed it into your application what gives you some advantages but requires more work. I don't know what app you want to implement so you will have to make a choice by yourself ;).
I don't think so. Your friend'll have to configure the odbc connection from the control panel. Also, I would suggest using a DB like derby or MySql than MS Access as the odbc driver is considered to have many bugs. Also using an embedded DB like derby wouldn't require your friend to configure anything at all.