将文件夹转换为Java中的可执行jar文件

Question

I need some help with turning a folder into an executable jar file. I want to do this in my application not from a batch file. Basically i have a folder on my desktop with class files already in it, all i want is to turn that folder into an executable jar file.

I have already tried this:

    File file = new File(System.getProperty("user.home") + "/Desktop/myfolderwithclasses");
    File file2 = new File(System.getProperty("user.home") + "/Desktop/myfolderwithclasses.jar");
    file.renameTo(file2);

Unfortunately all this does is rename the folder to what i set but it doesn't change the file type.

Any help with this would be greatly appreciated.

Answer 1

您可以使用eclipse并导出可运行的jar。

Answer 2

Making an executable JAR isn't as simple as renaming a folder. You can use IDE functionality, as has been mentioned, but a more portable solution is to use something like Apache Ant, which is actually supported in a lot of the IDEs. You'll want to use the JAR Task . If you just have your own classes to package, and no complicated library structure, the examples at the bottom of the page should suffice. Here's a Hello World tutorial for Ant to help you set up your build file.