如何在Java程序中获取并运行jar文件？

Question

I'm creating an operating system-like program in java and have run into a little trouble. I want the user to be able to run jar files of their choice in it, but I don't really know how though.

Basically, it will work like this:

1. The user opens a program in the OS called "Import Jar".
2. The user clicks "browse", then a JFileChooser pops up.
3. After the user specified a file, they click "Finish".
4. The Jar starts up in a JInternalFrame.

Answer 1

You can use the Runtime.exec(String) method for that.

For example:

Runtime rt = Runtime.getRuntime();
Process pr = rt.exec("java -jar yourJar.jar");

Does start your jar within a running Java program. In your case you have to ensure that the jar yourJar.jar starts in a JInternalFrame .