Example usage for java.io File createNewFile

Introduction

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

Prototype

public boolean createNewFile() throws IOException 

Source Link

Document

Atomically creates a new, empty file named by this abstract pathname if and only if a file with this name does not yet exist.

Usage

From source file:Main.java

public static File touch(String fullFilePath) throws IOException {
    if (fullFilePath == null) {
        return null;
    }/*from   www  .j a  v  a2 s.co m*/
    File file = new File(fullFilePath);

    file.getParentFile().mkdirs();
    if (!file.exists())
        file.createNewFile();
    return file;
}

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From source file:Main.java

public static void writeFile(File file, byte[] content) throws IOException {
    if (!file.exists()) {
        try {/*from ww  w  .  j  a va2 s.c  om*/
            file.createNewFile();
        } catch (IOException e) {
            throw new IOException("not crete file=" + file.getAbsolutePath());
        }
    }
    FileOutputStream fileOutputStream = null;
    ByteArrayInputStream bis = null;
    try {
        bis = new ByteArrayInputStream(content);
        fileOutputStream = new FileOutputStream(file, false);
        byte[] buffer = new byte[1024];
        int length = 0;
        while ((length = bis.read(buffer)) != -1) {
            fileOutputStream.write(buffer, 0, length);
        }
        fileOutputStream.flush();
    } finally {
        if (fileOutputStream != null) {
            fileOutputStream.close();
        }
        if (bis != null) {
            bis.close();
        }
    }
}

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From source file:com.comcast.cats.service.util.YAMLUtils.java

@SuppressWarnings("unchecked")
public static synchronized <T> T loadFromYAML(String filePath, T resultObject, Constructor constructor)
        throws IllegalClassException, IOException {
    Yaml yaml;/*from ww  w . j  a v  a2  s.c  o m*/
    FileInputStream fileIS = null;

    if (constructor != null) {
        yaml = new Yaml(constructor);
    } else {
        yaml = new Yaml();
    }
    try {
        fileIS = new FileInputStream(filePath);
        resultObject = (T) yaml.load(fileIS);
    } catch (FileNotFoundException exception) {
        File file = new File(filePath);
        file.createNewFile(); // create file if one does not exist.
        fileIS = new FileInputStream(filePath);
        resultObject = (T) yaml.load(fileIS);
    } catch (ClassCastException e) {
        logger.warn(
                "YAML content found at " + filePath + " does not conform to passed object " + e.getMessage());
        throw new IllegalClassException(
                "YAML content found at " + filePath + " does not conform to passed object " + e.getMessage());
    } finally {
        if (fileIS != null) {
            fileIS.close();
        }
    }

    return resultObject;
}

---

From source file:Main.java

public static Properties loadPropertyInstance(String filePath, String fileName) {
    try {//w w w . j av  a  2  s  .  co  m
        File d = new File(filePath);
        if (!d.exists()) {
            d.mkdirs();
        }
        File f = new File(d, fileName);
        if (!f.exists()) {
            f.createNewFile();
        }
        Properties p = new Properties();
        InputStream is = new FileInputStream(f);
        p.load(is);
        is.close();
        return p;
    } catch (Exception e) {
        e.printStackTrace();
        return null;
    }
}

---

From source file:Main.java

public static boolean saveBitmap2File(Bitmap bitmap, File file) {
    FileOutputStream fos = null;/*from   w  w  w  .  ja v  a2  s  .  c  o  m*/
    try {
        file.deleteOnExit();
        file.createNewFile();
        fos = new FileOutputStream(file);
        bitmap.compress(Bitmap.CompressFormat.JPEG, 100, fos);
        fos.flush();
    } catch (IOException e) {
        e.printStackTrace();
        return false;
    } finally {
        if (fos != null) {
            try {
                fos.close();
            } catch (IOException e1) {
                e1.printStackTrace();
            }
        }
    }
    return true;
}

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From source file:com.comcast.cats.service.util.YAMLUtils.java

public static synchronized <T> void saveAsYAML(String filePath, T objectToSave, Representer representer)
        throws FileNotFoundException {
    if (objectToSave != null) {
        Yaml yaml;//w  w w.  j ava  2s .  co  m
        FileWriter fw = null;
        if (representer == null) {
            yaml = new Yaml();
        } else {
            yaml = new Yaml(representer);
        }
        try {

            File file = new File(filePath);
            file.createNewFile(); // create file if one does not exist.

            fw = new FileWriter(filePath);
            yaml.dump(objectToSave, fw);
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            if (fw != null) {
                try {
                    fw.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }
    }
}

---

From source file:Main.java

public static void unZipFolder(InputStream input, String outPathString) throws Exception {
    java.util.zip.ZipInputStream inZip = new java.util.zip.ZipInputStream(input);
    java.util.zip.ZipEntry zipEntry = null;
    String szName = "";

    while ((zipEntry = inZip.getNextEntry()) != null) {
        szName = zipEntry.getName();/*  w ww .  j  a  v  a2 s .c  om*/

        if (zipEntry.isDirectory()) {

            // get the folder name of the widget
            szName = szName.substring(0, szName.length() - 1);
            java.io.File folder = new java.io.File(outPathString + java.io.File.separator + szName);
            folder.mkdirs();

        } else {

            java.io.File file = new java.io.File(outPathString + java.io.File.separator + szName);
            file.createNewFile();
            // get the output stream of the file
            java.io.FileOutputStream out = new java.io.FileOutputStream(file);
            int len;
            byte[] buffer = new byte[1024];
            // read (len) bytes into buffer
            while ((len = inZip.read(buffer)) != -1) {
                // write (len) byte from buffer at the position 0
                out.write(buffer, 0, len);
                out.flush();
            }
            out.close();
        }
    } //end of while

    inZip.close();
}

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From source file:Main.java

private static void createNoMediaFile(File file) {
    try {/*from w ww .  ja  va 2  s .c  om*/
        File noMediaFile = new File(file, NO_MEDIA_FILE);

        if (!noMediaFile.exists()) {
            noMediaFile.createNewFile();
        }
    } catch (IOException e) {
        Log.w(TAG, e.toString());
    }
}

---

From source file:com.z2data.files.WriteOperations.java

/**
 * Write status Data for URL To file//from   w  w  w  .  j  a  v  a 2 s  . co  m
 * 
 * @param outputPath
 * @param urlData
 */
@SuppressWarnings("deprecation")
public static void writeURLData(String outputPath, URLData urlData) {

    try {
        File file = new File(outputPath);

        if (!file.exists()) {
            file.createNewFile();
        }

        FileUtils.writeStringToFile(file, urlData.getParentURL() + "\t" + urlData.getAnchorTitle() + "\t"
                + urlData.getAnchor() + "\t" + urlData.getDownloadStatus() + "\t" + urlData.getDownloadPath(),
                true);
        FileUtils.writeStringToFile(file, System.lineSeparator(), true);

    } catch (Exception ex) {
        ex.printStackTrace();
    }
}

---

From source file:Main.java

@SuppressLint("NewApi")
public static void getURL(String path) {
    String fileName = "";
    String dir = "/IndoorNavi/";
    File sdRoot = Environment.getExternalStorageDirectory();
    try {/*w w  w  .  j  a va 2  s.  c o  m*/
        // Open the URLConnection for reading
        URL u = new URL(path);
        // URL u = new URL("http://www.baidu.com/");
        HttpURLConnection uc = (HttpURLConnection) u.openConnection();

        int code = uc.getResponseCode();
        String response = uc.getResponseMessage();
        //System.out.println("HTTP/1.x " + code + " " + response);
        for (int j = 1;; j++) {
            String key = uc.getHeaderFieldKey(j);
            String header = uc.getHeaderField(j);
            if (!(key == null)) {
                if (key.equals("Content-Name"))
                    fileName = header;
            }
            if (header == null || key == null)
                break;
            //System.out.println(uc.getHeaderFieldKey(j) + ": " + header);
        }
        Log.i("zhr", fileName);
        //System.out.println();

        try (InputStream in = new BufferedInputStream(uc.getInputStream())) {

            // chain the InputStream to a Reader
            Reader r = new InputStreamReader(in);
            int c;
            File mapFile = new File(sdRoot, dir + fileName);
            mapFile.createNewFile();
            FileOutputStream filecon = new FileOutputStream(mapFile);
            while ((c = r.read()) != -1) {
                //System.out.print((char) c);
                filecon.write(c);
                filecon.flush();

            }
            filecon.close();
        }

    } catch (MalformedURLException ex) {
        System.err.println(path + " is not a parseable URL");
    } catch (IOException ex) {
        System.err.println(ex);
    }
}

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