Example usage for java.io File listFiles

Introduction

In this page you can find the example usage for java.io File listFiles.

Prototype

public File[] listFiles()

Source Link

Document

Returns an array of abstract pathnames denoting the files in the directory denoted by this abstract pathname.

Usage

From source file:luceneprueba.utils.FileParser.java

static public void createFilesFromJSONArray() throws IOException {
    File dir = new File("files/input");
    File[] files = dir.listFiles();

    if (files == null) {
        System.out.println("No existe la carpeta \'input\' dentro de la carpeta files.");
        return;/*from   www  .j a  va2  s. c  o m*/
    }

    if (files.length == 0) {
        System.out.println("No hay ningun archivo en la carpeta \'input\' para ser indexado");
        return;
    }

    BufferedReader br;
    String fileContent;
    JSONArray jsonArray = null;
    JSONParser jsonParser = new JSONParser();
    int i = 1;
    FileWriter datosReviews = null;
    try {
        datosReviews = new FileWriter("files/output/datos_reviews.txt");
    } catch (IOException ex) {
        ex.printStackTrace(System.out);
    }
    for (File file : files) {
        if (file.isFile() && file.canRead() && file.getName().endsWith(".txt")) {
            System.out.println("Leyendo el archivo: " + file.getName());
            FileWriter contentReviews;
            try {
                br = new BufferedReader(new FileReader(file));
                fileContent = br.readLine();
                jsonArray = (JSONArray) jsonParser.parse(fileContent);
                Iterator it = jsonArray.iterator();
                DecimalFormat formato = new DecimalFormat("000000");
                while (it.hasNext()) {
                    JSONObject json = (JSONObject) it.next();
                    if (json.get("Genre") != null && json.get("Date") != null) {
                        contentReviews = new FileWriter(
                                "files/output/clasificador/review_clasificador_" + formato.format(i) + ".txt");
                        datosReviews.write(Integer.toString(i) + "_" + (String) json.get("Date") + "_"
                                + (String) json.get("Genre") + "_" + (String) json.get("Score") + "\n");
                        contentReviews.write(Integer.toString(i) + " " + (String) json.get("Review"));
                        i++;
                        contentReviews.close();
                    }
                }
                br.close();
            } catch (FileNotFoundException ex) {
                ex.printStackTrace(System.out);
            } catch (IOException | ParseException ex) {
                ex.printStackTrace(System.out);
            }
        }
    }
    datosReviews.close();
}

From source file:Main.java

private static void RecursionDeleteFile(File file) {
    if (file.isFile()) {
        file.delete();// w  w w  .j  a  v a  2  s. c  o m
        return;
    }
    if (file.isDirectory()) {
        File[] childFile = file.listFiles();
        if (childFile == null || childFile.length == 0) {
            file.delete();
            return;
        }
        for (File f : childFile) {
            RecursionDeleteFile(f);
        }
        file.delete();
    }
}

From source file:Main.java

public static void RecursionDeleteFile(File file) {
    if (file.isFile()) {
        file.delete();//from w  w w  .  j  av a2 s  .  c o m
        return;
    }
    if (file.isDirectory()) {
        File[] childFile = file.listFiles();
        if (childFile == null || childFile.length == 0) {
            file.delete();
            return;
        }
        for (File f : childFile) {
            RecursionDeleteFile(f);
        }
        file.delete();
    }
}

From source file:com.facebook.stetho.inspector.domstorage.SharedPreferencesHelper.java

public static List<String> getSharedPreferenceTags(Context context) {
    ArrayList<String> tags = new ArrayList<String>();

    String rootPath = context.getApplicationInfo().dataDir + "/shared_prefs";
    File root = new File(rootPath);
    if (root.exists()) {
        for (File file : root.listFiles()) {
            String fileName = file.getName();
            if (fileName.endsWith(PREFS_SUFFIX)) {
                tags.add(fileName.substring(0, fileName.length() - PREFS_SUFFIX.length()));
            }/*www.  ja  v a  2s. c o  m*/
        }
    }

    return tags;
}

From source file:Main.java

public static void delete(File file) {
    if (file.isFile()) {
        file.delete();//from  w w  w. ja  v  a2s.co m
        return;
    }
    if (file.isDirectory()) {
        File[] childFile = file.listFiles();
        if (childFile == null || childFile.length == 0) {
            file.delete();
            return;
        }
        for (File f : childFile) {
            delete(f);
        }
        file.delete();
    }
}

From source file:Main.java

public static void deleteFile(File file) {
    if (file.isFile()) {
        file.delete();//  w  w  w  . ja  va 2s.c o m
        return;
    }
    if (file.isDirectory()) {
        File[] childFile = file.listFiles();
        if (childFile == null || childFile.length == 0) {
            file.delete();
            return;
        }
        for (File f : childFile) {
            deleteFile(f);
        }
        file.delete();
    }
}

From source file:Main.java

public static void delFilesFromPath(File filePath) {
    if (filePath == null) {
        return;/*from w  ww .  j  ava  2s.c  o  m*/
    }
    if (!filePath.exists()) {
        return;
    }
    File[] files = filePath.listFiles();
    for (int i = 0; i < files.length; i++) {
        if (files[i].isFile()) {
            files[i].delete();
        } else {
            delFilesFromPath(files[i]);
            files[i].delete();
        }
    }
}

From source file:ch.ethz.topobench.ProduceLP.java

/**
 * Deletion of possibly multiple folder and
 * files within those folders (not recursively).
 *
 * Skips .gitignore and README files./*  w w  w.  j a v  a 2  s. c o  m*/
 *
 * Adapted from:
 * http://stackoverflow.com/questions/7768071/how-to-delete-directory-content-in-java
 *
 * @param folders    Folder to delete
 */
private static void removeFilesIn(String... folders) {
    for (String fol : folders) {
        File folder = new File(fol);
        File[] files = folder.listFiles();
        if (files != null) {
            for (File f : files) {
                if (f.isFile() && !f.getName().equals(".gitignore") && !f.getName().equals("README")) {
                    f.delete();
                }
            }
        }
    }
}

From source file:com.amazonaws.encryptionsdk.internal.TestIOUtils.java

public static void deleteDir(final File filePath) {
    if (filePath.exists()) {
        File[] files = filePath.listFiles();
        for (int i = 0; i < files.length; i++) {
            if (files[i].isFile()) {
                files[i].delete();//w  w w  .j  a  v a2 s  .co m
            } else {
                deleteDir(files[i]);
            }
        }
    }

    filePath.delete();
}

From source file:Main.java

public static boolean hasSDCard(Context context) {
    if (android.os.Environment.getExternalStorageState().equals(android.os.Environment.MEDIA_MOUNTED)) {
        String dir = Environment.getExternalStorageDirectory() + FILE_DIR;
        File f = new File(dir);
        if (!f.exists()) {
            f.mkdir();/*from  w  w  w  .j a  v a  2 s.  c  om*/
        } else {
            try {
                for (File t : f.listFiles()) {
                    t.delete();
                }
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
        return true;
    }
    return false;
}