unix command

hi there
I am trying to execute a unix command from servlet. Command woks fine when i
try to get output on to terminal and this is the code for that:

Process proc=null;
    Runtime rt = Runtime.getRuntime();
    proc = rt.exec(new String[] {"/vol1/people/dinesh/htblast/blockhead_64","-stdout","/vol1/people/dinesh/htblast/testfile.fsa","/vol1/people/dinesh/htblast/rules_file","1"});
but when i try to redirect it to a file it is not working ,,though it works
when i execute this command from command line in unix shell.here is the code for that:
Process proc=null;
    Runtime rt = Runtime.getRuntime();
    proc = rt.exec(new String[] {"/vol1/people/dinesh/htblast/blockhead_64","-stdout","/vol1/people/dinesh/htblast/testfile.fsa","/vol1/people/dinesh/htblast/rules_file","1",">","test2.out"});
where test2.out is the file where i want my output.
i have tried giving the absolute path of test2.out but command didnt write to it.

please advice
dinesh

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