java - jmap dump not working -

no exception thrown still cant find dump.bin file in desktop folder, path wrong?

 public static void dumpheap()         {             system.out.println("dumping data");              string name = managementfactory.getruntimemxbean().getname();             system.out.println("name :" + name);             string pid = name.substring(0, name.indexof("@"));             system.out.println("pid :" + pid);              string[] cmd = { "jmap", "-dump:file=/users/myname/desktop/dump.bin", pid };             process p;             try {                 p = runtime.getruntime().exec(cmd);             } catch (ioexception e) {                 e.printstacktrace();             } 

i had force using -f

public static void dumpheap()      {         system.out.println("dumping data");          string name = managementfactory.getruntimemxbean().getname();         system.out.println("name :" + name);         string pid = name.substring(0, name.indexof("@"));         system.out.println("pid :" + pid);          string[] cmd = { "jmap", "-dump:file=/users/myname/desktop/dump.bin", "-f", pid };         process p;         try {             p = runtime.getruntime().exec(cmd);         } catch (ioexception e) {             e.printstacktrace();         }