Windows 10: .jar file not working with java

How do I open .jar files in a different, more simplified way and why won't my Java work as it should?My .jar file opens and closes as soon as I open it. I downloaded it for Minecraft, and every time I try and double click to open, rather nothing happens, or the Java's command prompt opens up. I've tried clicking on the specific applications named javaw, java, and used the recommended Java SE Platform Binary. I've also made sure that the .jar files are default opened with Java, have uninstalled and reinstalled Java twice through the settings menu and deleted the Program File, and it still doesn

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.java to .jar file

As a side note to Easy Rhinos comment, you can only jar .class files, meaning that you need to compile all the .java files and them jar the .class files resulting from the compilation. Example:
Code: javac Test.java jar cf Teste.jar Test.class[/quote]

 

.java to .jar file

if you know the manual then you know you dont put the code in the program, you convert all of your java class files into a jar file using their compiler.

 

.java to .jar file

Hi guys!
I have a problem i think i dont know how to do this little thing
I have searched around the web, but i cant find anyone to explain it how to
and where to put this code down here in order for the compilator to convert it
from .java to a .jar file so the program or games i do in neatbeans can be executed in
my mobile phone!
Anyone can help??? The code is this one:
jar cf jar-file input-file(s)