But i want this list in EXCEL sheet. How can i do this in RIDC code?
You can't. RIDC will help you to get data from UCM to Java (in a form of an object in memory). If you want to store this object persistently as a file (e.g. in Excel spreadsheet format) you have to use other Java techniques/libraries like this one: http://www.vogella.com/articles/JavaExcel/article.html or http://jexcelapi.sourceforge.net/