On Linux Shells, we can use “rm -fr” to remove a folder and its files recursively in sub directories. On windows, we can use “del /f / s” to remove files/folders recursively.
Using the following Java function, we can delete a file or folder recursively platform-indenpendently.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 | public class FileUtils { public static boolean deleteFile(String fileName) { File file = new File(fileName); if (file.exists()) { // check if the file is a directory if (file.isDirectory()) { // call deletion of file individually Arrays.stream(Objects.requireNonNull(file.list())) .map(s -> fileName + System.getProperty("file.separator") + s) .forEachOrdered(FileUtils::deleteFile); } file.setWritable(true); return file.delete(); } return false; } } |
public class FileUtils {
public static boolean deleteFile(String fileName) {
File file = new File(fileName);
if (file.exists()) {
// check if the file is a directory
if (file.isDirectory()) {
// call deletion of file individually
Arrays.stream(Objects.requireNonNull(file.list()))
.map(s -> fileName + System.getProperty("file.separator") + s)
.forEachOrdered(FileUtils::deleteFile);
}
file.setWritable(true);
return file.delete();
}
return false;
}
}We need to first check if file is existent, and then check if it is a folder (if yes, recursively calling self to remove all the files in the sub directories). Then we set the file writable to true and remove it.
–EOF (The Ultimate Computing & Technology Blog) —
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