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:juicebox.data.HiCFileTools.java

public static PrintWriter openWriter(File file) {
    try {//from   ww w. java2  s  .co  m
        file.createNewFile();
        return new PrintWriter(new BufferedWriter(new FileWriter(file)), true);
    } catch (IOException e) {
        System.out.println("I/O error opening file temp file for AutoSave.");
        System.exit(0);
    }
    return null;
}

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From source file:com.huawei.streaming.cql.CQLTestCommons.java

/**
 * //w w w  . ja  v  a  2 s. c o m
 *
 * @param f 
 * @param values 
 * @throws IOException ?
 */
public static void appendToFile(File f, String values) throws IOException {
    if (!f.exists()) {
        if (!f.getParentFile().exists()) {
            f.getParentFile().mkdirs();
        }
        LOG.warn("file " + f.getPath() + " does not exist! will create it.");
        if (!f.createNewFile()) {
            LOG.error("failed to create file " + f.getPath());
            return;
        }
    }
    if (f.isDirectory()) {
        LOG.error("file " + f.getPath() + " is a directory!");
    }
    FileUtils.write(f, values, CHARSET, true);
}

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From source file:net.orpiske.ssps.common.repository.RepositorySettings.java

/**
 * Initializes the configuration object/*w w  w. j a  v  a2  s.  c  om*/
 * 
 * @throws SspsException if the configuration file is not found, if the configuration
 * file is not parseable or if unable to create directories
 */
public static void initConfiguration() throws SspsException {

    String repositoryPath = RepositoryUtils.getUserRepository();
    String path = repositoryPath + File.separator + "repositories.conf";

    if (config == null) {

        File file = new File(path);

        if (!file.exists()) {

            try {
                if (!file.getParentFile().mkdirs()) {
                    throw new SspsException("Unable to create parent directories");
                }

                if (!file.createNewFile()) {
                    throw new SspsException("Unable to create repository settings file");
                }
            } catch (IOException e) {
                e.printStackTrace();
            }

            try {
                config = new PropertiesConfiguration(path);
            } catch (ConfigurationException e) {
                throw new SspsException("Unable to load repository configuration: " + e.getMessage(), e);
            }

            try {
                config.save();
            } catch (ConfigurationException e) {
                throw new SspsException("Unable to save repository configuration: " + e.getMessage(), e);
            }
        } else {
            try {
                config = new PropertiesConfiguration(path);
            } catch (ConfigurationException e) {
                throw new SspsException("Unable to load repository configuration: " + e.getMessage(), e);
            }
        }

    }
}

---

From source file:EnumParse.java

public static void praseEnum(JSONObject protocolObject, String keyName, String folderPath, String packageName)
        throws IOException, JSONException {
    Iterator<String> keys = protocolObject.keys();

    if (null != keyName && keyName.length() > 0) {
        File dirFolder = new File(folderPath + "/output");
        File file = new File(folderPath + "/output/ENUM_" + keyName + ".java");

        if (!dirFolder.exists()) {
            dirFolder.mkdirs();//from  ww  w  .  j  a va2 s .  c  o  m
        }

        if (file.exists()) {
            file.delete();
        }

        file.createNewFile();
        FileOutputStream out = new FileOutputStream(file, true);

        StringBuffer sb = new StringBuffer();
        sb.append("\n");
        sb.append("package " + packageName + ";");
        sb.append("\n");
        sb.append("import java.util.ArrayList;\n" + "import org.json.JSONArray;\n"
                + "import org.json.JSONException;\n" + "import org.json.JSONObject;\n");
        sb.append("\n");
        sb.append("public enum " + "ENUM_" + keyName + "\n{\n");

        Class enmuClass = null;

        while (keys.hasNext()) {

            String key = keys.next();

            Object item = protocolObject.get(key);

            if (item.getClass() == String.class) {
                sb.append("     " + key + "(\"" + item + "\")");
            } else if (item.getClass() == Integer.class) {
                sb.append("     " + key + "(" + item + ")");
            }

            enmuClass = item.getClass();

            if (keys.hasNext()) {
                sb.append(",");
            } else {
                sb.append(";");
            }

            sb.append("\n");

        }

        sb.append("\n     " + "private int value = 0;\n");

        if (enmuClass == String.class) {
            sb.append("     " + "private ENUM_" + keyName + "(String initValue)"
                    + "\n     {\n         this.value = initValue;\n     }\n\n");
            sb.append("     " + "public int value()\n     {\n         return this.value;\n     }\n");
        } else {
            sb.append("     " + "private ENUM_" + keyName + "(int initValue)"
                    + "\n     {\n         this.value = initValue;\n     }\n\n");
            sb.append("     " + "public int value()\n     {\n         return this.value;\n     }\n");
        }

        sb.append("}\n");

        out.write(sb.toString().getBytes("utf-8"));
        out.close();
    }
}

---

From source file:com.nearinfinity.mele.MeleBase.java

private static File getNewLocalPath(List<String> pathList, String directoryCluster, String directoryName,
        Random random) {//ww  w .  j a va  2 s  . co m
    Collection<String> attempts = new HashSet<String>();
    while (true) {
        if (attempts.size() == pathList.size()) {
            throw new RuntimeException("no local writable dirs");
        }
        int index = random.nextInt(pathList.size());
        String pathname = pathList.get(index);
        attempts.add(pathname);
        File file = new File(pathname);
        file.mkdirs();
        File testFile = new File(file, UUID.randomUUID().toString());
        try {
            if (testFile.createNewFile()) {
                testFile.delete();
                File dirFile = new File(new File(file, directoryCluster), directoryName);
                dirFile.mkdirs();
                return dirFile;
            }
        } catch (IOException e) {
            LOG.error("Can not create file on [" + file.getAbsolutePath() + "]");
        }
    }
}

---

From source file:net.naonedbus.utils.InfoDialogUtils.java

/**
 * Indique si un message n'a pas dj t affich, et le marque comme
 * affich./*from   ww w. j a va 2s . com*/
 * 
 * @param context
 * @param messageId
 *            L'id du message en question.
 * @return <code>true</code> si le message n'a pas encore t affich,
 *         <code>false</code> s'il l'a dj t.
 */
public static boolean isNotAlreadyShown(final Context context, final int messageId) {
    final File dataFile = new File(context.getFilesDir(), MESSAGE_FOLDER + File.separator + messageId);
    boolean result = true;

    createDir(context);
    if (!dataFile.exists()) {
        try {
            dataFile.createNewFile();
        } catch (final IOException e) {
            BugSenseHandler.sendExceptionMessage("Erreur lors de la cration du marqueur", null, e);
        }
    } else {
        result = false;
    }

    return result;

}

---

From source file:dsd.controller.ParserControler.java

@SuppressWarnings("resource")
private static boolean TransferImageToSite(File inFile, File outFile) {
    if (!outFile.exists()) {
        try {//from  www .ja  v  a 2  s  . c om
            outFile.createNewFile();
        } catch (IOException e) {
            e.printStackTrace();
            return false;
        }
    }

    FileChannel inChannel = null;
    FileChannel outChannel = null;
    try {
        inChannel = new FileInputStream(inFile).getChannel();
        outChannel = new FileOutputStream(outFile).getChannel();
        int maxCount = (64 * 1024 * 1024) - (32 * 1024);
        long size = inChannel.size();
        long position = 0;
        while (position < size) {
            position += inChannel.transferTo(position, maxCount, outChannel);
        }
        return true;
    } catch (Exception e) {
        e.printStackTrace();
    } finally {
        try {
            if (inChannel != null)
                inChannel.close();
            if (outChannel != null)
                outChannel.close();
        } catch (IOException ex) {
            ex.printStackTrace();
        }
    }
    return false;
}

---

From source file:org.liberty.android.fantastischmemo.downloader.DownloaderUtils.java

public static File downloadFile(String url, String savedPath) throws IOException {
    File outFile = new File(savedPath);
    OutputStream out;//  ww  w .  ja  v a  2  s.  c om

    // Delete and backup if the file exists
    AMUtil.deleteFileWithBackup(savedPath);

    // Create the dir if necessary
    File parentDir = outFile.getParentFile();
    parentDir.mkdirs();

    outFile.createNewFile();
    out = new FileOutputStream(outFile);

    Log.i(TAG, "URL to download is: " + url);
    URL myURL = new URL(url);
    URLConnection ucon = myURL.openConnection();
    byte[] buf = new byte[8192];

    InputStream is = ucon.getInputStream();
    BufferedInputStream bis = new BufferedInputStream(is, 8192);
    int len = 0;
    while ((len = bis.read(buf)) != -1) {
        out.write(buf, 0, len);
    }
    out.close();
    is.close();
    return outFile;
}

---

From source file:net.naonedbus.utils.InfoDialogUtils.java

/**
 * Afficher une dialog avec un message, uniquement si elle n'a pas dj t
 * affiche/* ww w  .  j  a  va2s .c o  m*/
 * 
 * @param context
 * @param messageId
 */
public static void showIfNecessary(final Context context, final int messageId) {
    final File dataFile = new File(context.getFilesDir(), MESSAGE_FOLDER + File.separator + messageId);

    createDir(context);
    if (!dataFile.exists()) {
        show(context, messageId);
        try {
            dataFile.createNewFile();
        } catch (final IOException e) {
            BugSenseHandler.sendExceptionMessage("Erreur lors de la cration du marqueur", null, e);
        }
    }
}

---

From source file:juicebox.data.HiCFileTools.java

/**
 * @param fileName//from  www .  j  a  va 2 s  .c  om
 * @return
 */
public static PrintWriter openWriter(String fileName) {
    try {
        File file = new File(fileName);
        file.createNewFile();
        file.setWritable(true);
        return new PrintWriter(new BufferedWriter(new FileWriter(file)), true);
    } catch (IOException e) {
        System.out.println("I/O error opening file: " + fileName);
        System.exit(0);
    }
    return null;
}

---

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