test/java/nio/file/Files/walkFileTree/CreateFileTree.java

*** 32,56 ****
  
  public class CreateFileTree {
  
      static final Random rand = new Random();
  
-     public static Path createTemporaryDirectory() throws IOException {
-         Path tmpdir = Paths.get(System.getProperty("java.io.tmpdir"));
-         Path dir;
-         do {
-             dir = tmpdir.resolve("name" + rand.nextInt());
-         } while (dir.exists());
-         dir.createDirectory();
-         return dir;
-     }
- 
      public static void main(String[] args) throws IOException {
!         Path top = createTemporaryDirectory();
!         if (!top.isAbsolute())
!             top = top.toAbsolutePath();
! 
          List<Path> dirs = new ArrayList<Path>();
  
          // create tree
          Queue<Path> queue = new ArrayDeque<Path>();
          queue.add(top);
--- 32,43 ----
  
  public class CreateFileTree {
  
      static final Random rand = new Random();
  
      public static void main(String[] args) throws IOException {
!         Path top = Files.createTempDirectory("tree");
          List<Path> dirs = new ArrayList<Path>();
  
          // create tree
          Queue<Path> queue = new ArrayDeque<Path>();
          queue.add(top);
*** 59,69 ****
          Path dir;
          while (((dir = queue.poll()) != null) && (n < total)) {
              int r = Math.min((total-n), (1+rand.nextInt(3)));
              for (int i=0; i<r; i++) {
                  String name = "dir" + (++n);
!                 Path subdir = dir.resolve(name).createDirectory();
                  queue.offer(subdir);
                  dirs.add(subdir);
              }
          }
          assert dirs.size() >= 2;
--- 46,56 ----
          Path dir;
          while (((dir = queue.poll()) != null) && (n < total)) {
              int r = Math.min((total-n), (1+rand.nextInt(3)));
              for (int i=0; i<r; i++) {
                  String name = "dir" + (++n);
!                 Path subdir = Files.createDirectory(dir.resolve(name));
                  queue.offer(subdir);
                  dirs.add(subdir);
              }
          }
          assert dirs.size() >= 2;
*** 71,81 ****
          // create a few regular files in the file tree
          int files = dirs.size() * 3;
          for (int i=0; i<files; i++) {
              String name = "file" + (i+1);
              int x = rand.nextInt(dirs.size());
!             dirs.get(x).resolve(name).createFile();
          }
  
          // create a few sym links in the file tree so as to create cycles
          int links = 1 + rand.nextInt(5);
          for (int i=0; i<links; i++) {
--- 58,68 ----
          // create a few regular files in the file tree
          int files = dirs.size() * 3;
          for (int i=0; i<files; i++) {
              String name = "file" + (i+1);
              int x = rand.nextInt(dirs.size());
!             Files.createFile(dirs.get(x).resolve(name));
          }
  
          // create a few sym links in the file tree so as to create cycles
          int links = 1 + rand.nextInt(5);
          for (int i=0; i<links; i++) {
*** 85,95 ****
                  y = rand.nextInt(dirs.size());
              } while (y != x);
              String name = "link" + (i+1);
              Path link = dirs.get(x).resolve(name);
              Path target = dirs.get(y);
!             link.createSymbolicLink(target);
          }
  
          // done
          System.out.println(top);
      }
--- 72,82 ----
                  y = rand.nextInt(dirs.size());
              } while (y != x);
              String name = "link" + (i+1);
              Path link = dirs.get(x).resolve(name);
              Path target = dirs.get(y);
!             Files.createSymbolicLink(link, target);
          }
  
          // done
          System.out.println(top);
      }