Does collect operation on Stream close the stream and underlying resources?

Question

Does below code need to be wrapped in try-with-resources to make sure underlying file is closed?

List rows = Files.lines(inputFilePath).collect         


        

Answer 1

As the javadoc of the overloaded Files#lines(Path, Charset) method states

The returned stream encapsulates a Reader. If timely disposal of file system resources is required, the try-with-resources construct should be used to ensure that the stream's close method is invoked after the stream operations are completed.

So yes, wrap the Stream returned by lines in a try-with-resources statement. (Or close it appropriately.)