Running single Instance of java application

[msatya]

Hi,

I developed a swing based application in java. I am running it through the executable jar. Each time clicking on the jar file it opens the new instance of the appliction.

But I want to open the single instance of the application i.e. If the application is running , then user tries to open another instance it should be display the error or running application only like yahoomessenger,notepad,etc.

Please tell me how it is done in java. send aly sample code or resources regarding this.

Thanks
in advance

[PLA]

Hi,

I developed a swing based application in java. I am running it through the executable jar. Each time clicking on the jar file it opens the new instance of the appliction.

But I want to open the single instance of the application i.e. If the application is running , then user tries to open another instance it should be display the error or running application only like yahoomessenger,notepad,etc.

Please tell me how it is done in java. send aly sample code or resources regarding this.

Thanks
in advance

You can use a file as a flag: When you start test the existence of the file, if not create it and start your app, whe your app is finish, delete the file. Sorry no sample code.