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import java.io.File;
import java.util.Scanner;
public class DirList {
static Scanner sc = new Scanner(System.in);
public static void main(String[] args) {
System.out.print("\nEnter a path: ");
String path = sc.nextLine();
File dir = new File(path);
if (!dir.exists() || !dir.isDirectory())
System.out.println("\nThat directory doesn't exist.");
else {
System.out.println("\nListing directory tree of:");
System.out.println(dir.getPath());
listDirectories(dir, " ");
}
}
private static void listDirectories(File dir, String indent) {
File[] dirs = dir.listFiles();
for (File f : dirs) {
if (f.isDirectory()) {
System.out.println(indent + f.getName());
listDirectories(f, indent + " ");
}
}
}
}
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