Runtime.exec error on Fedora Core

Question

Hi,
I have some difficulty using Runtime.exec method on Fedora Core.
If classpath contains "space", it cannot execute a commnad.
It works well on Windows systems with quotation marks.
Here's my code.
Proccess p = r.exec("java -classpath .:\"pkg root"\" A");
Java command regards root as a class. It is actually a half of directory name. How can I solve this problem?
thank you for reading.

Answer 1

This setting works for me on Linux:
[ebank2@giskard ivan]$ java b
here is a - have a nice day![ebank2@giskard ivan]$ cat "a b"/a.java
public class a {
public static void main (String a[] ) {
System.out.println("here is a - have a nice day!");
}[ebank2@giskard ivan]$ cat b.java
import java.io.*;
public class b {
static String s[]={ "java" , "-classpath" , "a b" , "a" };
public static void main (String a[] ) throws Exception {
Process p =  Runtime.getRuntime().exec(s);
InputStream is = p.     getInputStream() ;
int c;
while((c=is.read()) != -1) System.out.print((char)c);
}