i want to display the excel(work sheet) file as tease in my java output?

Answer 1

If you just want to launch excel, use

String[] commands = {"cmd", "/K", "start", "excel", "full path to .xls file"};
Runtime.getRuntime().exec(commands);

Where the last string element needs to be the full path to the desired file.

If you want to read the data and then do something with that data in your app (display in a JTable, for example), then you will need to do considerably more work using something like the POI library:

http://jakarta.apache.org/poi/hssf/index.html

Answer 2

why would you want to do that???