How to make a working plugin without using IDE or Java program.

I want to learn how to make a program, but the school computers won't allow me to install a JDK. This is a big problem because I can't install eclipse to create my plugins or any other program. So I thought maybe I could learn how to make the plugins using a simple text editor. I got all my code finished, it should all work perfectly (as I have tested the code on another computer). But I don't know how to turn it all into a .jar file. I tried renaming the file to .zip after it has been compressed into a .zip, but the plugin didn't work. I tried looking in existing plugins and found a MANIFEST.MF file. I have no idea what it is but I think I may need it for the plugin to work, however, I tried making my own manifest file and... it didn't work.

So I'm hoping if you can tell me any other ways to make working plugins without using eclipse, netbeans, intelij, or any other program.

 

Java code needs tot be compiled, but therefore you need the jdk. So there is no way that I know of to do it. I'm sorry that I can't help you further.

 

Intellij can be installed without admin access (don't know about Eclipse), and for a JDK, upload a version of OpenJDK portable to Dropbox or something (sourceforge is blocked at my school). Or as said, use TeamViewer

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Mabey a portable version of eclipse could work? Like https://sourceforge.net/projects/eclipse-neon-portable/