A real puzzle to me when using Runtime.exec()

Hi all,
thank you for taking the time reading this. I am writing an application that runs tripwire using exec(). It runs tripwire as long as I do not need to type a password. I can see everything that is coming from tripwire except the line "Please enter the Passphrase:" I am grabbing the standard InputStream and the ErrorStream using process.getInputStream() and the error stream with
process.getErrorStream(). If I run a command that does not involved any password it works like a champ I can see the results and all the messages, but if I need to give some feedback to the console it keeps waiting for the answer while I can't even see the question. I will really appreciate any comments, sugestions, or ideas I am stuck and I am new in Java. Thank you,
Oscar
[email protected]

Just to add a little bit more of information. The code works in Linux environment, but not in Windows. Does anyone know about some sort of Windows limitation of any kind? I still cannot see the output, looks like Windows is holding it in a buffer even though I am grabbing the information. The code I am using to do it is the following:
Process process = Runtime.getRuntime().exec(cmd);
InputStreamReader error = new InputStreamReader( process.getErrorStream() );
InputStreamReader isr = new InputStreamReader( process.getInputStream() );
OutputStreamWriter osw = new OutputStreamWriter( process.getOutputStream());
StringBuffer buffer = new StringBuffer();
int c = 0;
char ch;
while((c = isr.read()) != -1)
ch = (char)c;
if( ch == '\n' || ch == '\r' )
buffer.append( ch );
System.out.print( buffer.toString() );
buffer.delete(0, buffer.length() );
else if( ch == ':')
buffer.append( ch );
System.out.print( buffer.toString() );
StringTokenizer str = new StringTokenizer( buffer.toString() );
String temp = "";
while( str.hasMoreTokens() )
temp = str.nextToken();
if( temp.equals("passphrase:") )
JFrame frame = new JFrame();
frame.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
CustomDialog dialog = new CustomDialog( frame, this );
dialog.pack();
dialog.setLocationRelativeTo( frame );
dialog.setVisible( true );
String password = dialog.getValidatedText();
osw.write( password );
osw.flush();
buffer.delete(0, buffer.length() );
else
buffer.append( ch );
If you find something wrong PLEASE let me know. Again thank you for your time,
Oscar

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Message was edited by:
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adamSpline wrote:
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>
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Javapedia: Classpath
How Classes are Found
Setting the class path (Windows)
Setting the class path (Solaris/Linux)
Understanding the Java ClassLoader
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A real puzzle to me when using Runtime.exec()

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