Running a .jar with a java program on unix

Question

I am trying to run a jar file with this java code but when i run it, it comes up with built successfully but the file doesn't run.
ps- I use a unix os
public class Main {
public static void main(String args[]) throws IOException, InterruptedException {
// first method i tried:
Runtime.getRuntime().exec( new String[] {"/bin/sh", "-c",
"/Users/cb/NetBeansProjects/MultiCalc/dist/MultiCalc.jar output.out ascii workload2.trace 0"});
//second method i tried:
ProcessBuilder pb = new ProcessBuilder( new String[] {"/bin/sh", "-c",
"/Users/cb/NetBeansProjects/MultiCalc/dist/MultiCalc.jar"});
pb.redirectErrorStream( true );
pb.start();
thanks a lot in advance!

Answer 1

javalavaguava-- wrote:
I am trying to run a jar file with this java code but when i run it, it comes up with built successfully but the file doesn't run.
ps- I use a unix os
public class Main {
public static void main(String args[]) throws IOException, InterruptedException {
// first method i tried:
Runtime.getRuntime().exec( new String[] {"/bin/sh", "-c",
"/Users/cb/NetBeansProjects/MultiCalc/dist/MultiCalc.jar output.out ascii workload2.trace 0"});
//second method i tried:
ProcessBuilder pb = new ProcessBuilder( new String[] {"/bin/sh", "-c",
"/Users/cb/NetBeansProjects/MultiCalc/dist/MultiCalc.jar"});
pb.redirectErrorStream( true );
pb.start();
thanks a lot in advance!I don't see any mention of 'java' when trying to execute the jar file. You have to specify which application should process a jar file - it doesn't magically know to use java.
P.S. You should read the 4 sections of [http://www.javaworld.com/javaworld/jw-12-2000/jw-1229-traps.html|http://www.javaworld.com/javaworld/jw-12-2000/jw-1229-traps.html] and implement ALL the recommendations.