Prefers OutputStream instead of FileOutputStream to improve performance.

[reudismam]

[dlogothetis]

Can you comment on how this improves performance?

[reudismam]

FileInputStream and FileOutputStream override the finalize method. As a result, their objects are only cleaned when the garbage collector performs a sweep. Since Java 7, programmers can use Files.newInputStream and Files.newOutputStream instead of FileInputStream and FileOutputStream to improve performance. finalize method is deprecated in Java 9+.