How to using the executable software in Java

I got a software named: pdf to text convertor; which can format the text interface from the pdf, for example, you need add the page number with a4 paper, then the convertor can change the pdf into text with page numbers. it is running on the doc, the command like: c:\pdfconvertor\xpdfrc.exe "c:\filename\name.pdf", after the text file will exist in the same directory with the pdf file.
so my problem is how to use java to call this DOS command to execute the program, and then java can read the text file, does some one give me some idea? better with simple java code!! Thanks very much! I will pay dollar for the solutions

You can use:
String[] cmd = {"c:\\pdfconvertor\\xpdfrc.exe", "c:\\filename\\name.pdf"};
Process p = Runtime.getRuntime().exec(cmd);Wait for the process to finish:
p.waitFor()and do your thing with the output file.
Note there are mechanisms for capturing the input and output of the subprocess; see java.lang.Process javadoc.

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