create file + get directory tree

DemoFile.java

package lesson8.file;


import java.io.File;

public class DemoFile {

    public static void main(String[] args) {

        createFile();

        File fileTest = new File("/Users/anna/Documents/directorytest");
        getFolderTree(fileTest);
    }

    public static void createFile() {

        File file = new File("file", "test.txt");
        file.mkdirs();
        System.out.println(file.getAbsolutePath());
    }

    public static void getFolderTree(File file) {

        for (File f : file.listFiles()) {
            
            if(f.isFile())
                System.out.print("\t");
            System.out.println(f.getName());
            
            if (f.isDirectory()) {
                System.out.print("\t");
                getFolderTree(f);
            }
        }
    }
}