Question

How do you execute a JAR file within your source code?

I know that for an exe, you use

try
{
 Runtime rt = Rintime.getRuntime() ;
 Process p = rt.exec("Program.exe") ;
 InputStream in = p.getInputStream() ;
 OutputStream out = p.getOutputStream ();
 InputSream err = p,getErrorStram() ;

//do whatever you want
 //some more code

 p.destroy() ;
}catch(Exception exc){/*handle exception*/}

Is it the same only:

rt.exec("program.exe") changes to rt.jar("program.jar") or is it something different?

Answer 1

In order to extract a jar file instead of exec(“program.exe”) you need to say

exec("<path to jar command> -xf program.jar") 

Usually the jar command is available in your bin directory and if the env variables are properly set , you can even say
exec(“jar -xf program.jar”)

For running the jar file you can say “java -jar program.jar”