多选题 Given the following directory structure:
test -|
|- Finder.class
|- testdir -|
|- subdir
|- subdir2
|- testfile.txt
If test, testdir, subdir, and subdir2 are all directories, and Finder.class and testfile.txt are files, and given:
import java.io.*;
public class Finder {
public static void main(String[] args) throws IOException {
String[] files = new String[100];
File dir = new File(args[0]);
files = dir.list();
System. out.println (files.length);
} }
And, if the code compiles, the invocation:
java Finder testdir
What is the result?