Test Files

JUnit 4

The TemporaryFolder rule allows creating testing folders.

@Rule
public TemporaryFolder folder = new TemporaryFolder();

file = folder.newFile("/file.txt");

JUnit 5

The TempDir annotation initializes a testing folder.

@TempDir
public static File folder;

Which can be used for creating test files:

file = new File(folder, "/file.txt");