Nicolai Parlog • 11/3/2025

Consistent Behavior of new File("")

This article discusses a behavioral change in JDK 25 where the File constructor with an empty string now consistently represents the current user directory, fixing an inconsistency present in JDK 24 and earlier. Previously, new File("") appeared non-existent while its absolute path referred to the current directory. The article covers the old behavior, the new consistent behavior, and migration considerations for code relying on the old behavior, such as unit tests or input validation. It also notes that the newer java.nio.file API already handled this correctly.

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#path #Java #Jdk 25