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weird Runtime.exec() problem

Posted on 2002-06-05
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Last Modified: 2010-03-31
I need to run a command, basically:

Runtime rt = Runtime.getRuntime();

command = "dostuff -a blah -d \"blah blah\"";

Process p = rt.exec(command);
p.waitFor();

the second argument is the problem, for some reason the application treats the quoted argument as two separate ones and comlains that 'blah"' does not start with a '-'

if I echo this exact command and then copy and paste it from the shell, it works fine

any suggestions?
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Question by:_D_
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Accepted Solution

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Jim Cakalic earned 200 total points
ID: 7056580
The single String exec method par5ses the command argument into tokens using a StringTokenizer with the default character delimiters which are the whitespace characters including blank. It does not recognize or honor quoting. What you will need to do is construct a String[] with each array element being one arg value. Something like:

    String[] cmdArray = new String[5];
    int argn = 0;
    cmdArray[argn++] = "dostuff";
    cmdArray[argn++] = "-a";
    cmdArray[argn++] = "blah";
    cmdArray[argn++] = "-d";
    cmdArray[argn++] = "blah blah";
    rt.exec(cmdArray);

Best regards,
Jim Cakalic
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Author Comment

by:_D_
ID: 7057262
yep, already figured it out and did this - well answered anyway
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