BAEL-3651: Make sure the directory is always initially empty

core-java-modules/core-java-io-apis/src/test/java/com/baeldung/file/FileClassUnitTest.java

@@ -156,10 +156,16 @@ public class FileClassUnitTest {
 
     private static File makeDir(String name) {
         File directory = new File(name);
-        directory.mkdir();
-        if (directory.isDirectory()) {
+
+        // If the directory already exists, make sure we create it 'from scratch', i.e. all the files inside are deleted first
+        if (directory.exists()) {
+            removeDir(directory);
+        }
+
+        if (directory.mkdir()) {
             return directory;
         }
+
         throw new RuntimeException("'" + name + "' not made!");
     }