Do I have to close FileInputStream?

Question

I am working as a trainee in Test Automation. I am working with creating Junit code with Eclipse and run using Eclipse. In that I am retriving the datas from excel sheet usi

Answer 1

Basic CompSci 101 tell us to make sure to close resources that we open, in Java or any language. So yes, you need to close them. Bad juju is bound to happen when you do not do so.

Also, you should learn (and have the inclination) to use the Javadocs. Look up at the Javadoc for FileInputStream and Closeable. The answers are there.