Example usage for java.io Closeable close

Introduction

In this page you can find the example usage for java.io Closeable close.

Prototype

public void close() throws IOException;

Source Link

Document

Closes this stream and releases any system resources associated with it.

Usage

From source file:CB_Utils.Util.Downloader.java

/**
 * Start downloading the remote resource. The target object should not be accessed until after calling waitUntilCompleted().
 *///from  w ww  . ja  v  a2  s  .  c om
@Override
public void run() {
    synchronized (stateLock) {
        if (started) {
            return;
        } else {
            started = true;
            running = true;
        }
    }

    BufferedInputStream bis = null;
    BufferedOutputStream bos = null;
    BufferedReader br = null;

    try {
        /* open connection to the URL */
        checkState();
        progressString = "Opening connection to remote resource";
        progressUpdated = true;

        final URLConnection link;

        try {
            link = url.openConnection();
            link.connect();
        } catch (Exception e) {
            progressString = "Failed to open connection to remote resource";
            progressUpdated = true;
            throw e;
        }

        /* get length of the remote resource */
        checkState();
        progressString = "Getting length of remote resource";
        progressUpdated = true;

        /* get size of webpage in bytes; -1 if unknown */
        final int length = link.getContentLength();

        synchronized (lengthLock) {
            totalLength = length;
        }

        progressUpdated = true;

        /* open input stream to remote resource */
        checkState();
        progressString = "Opening input stream to remote resource";
        progressUpdated = true;

        InputStream input = null;

        try {

            if (totalLength < 1) {

                // load with http Request
                HttpGet httppost = new HttpGet(url.toString());

                // Execute HTTP Post Request
                try {
                    HttpParams httpParameters = new BasicHttpParams();
                    HttpConnectionParams.setConnectionTimeout(httpParameters, HttpUtils.conectionTimeout);
                    HttpConnectionParams.setSoTimeout(httpParameters, HttpUtils.socketTimeout);
                    DefaultHttpClient httpClient = new DefaultHttpClient(httpParameters);
                    HttpResponse response = httpClient.execute(httppost);
                    input = response.getEntity().getContent();
                } catch (ConnectTimeoutException e1) {

                    e1.printStackTrace();
                } catch (ClientProtocolException e1) {

                    e1.printStackTrace();
                } catch (IOException e1) {

                    e1.printStackTrace();
                }

            } else {
                input = link.getInputStream();
            }

            if (target instanceof File) {
                bis = new BufferedInputStream(input);
            } else if (target instanceof StringBuilder) {
                final String contentType = link.getContentType().toLowerCase(Locale.ENGLISH);

                /* look for charset, if specified */
                String charset = null;
                final Matcher m = Pattern.compile(".*charset[\\s]*=([^;]++).*").matcher(contentType);

                if (m.find()) {
                    charset = m.group(1).trim();
                }

                if ((charset != null) && charset.length() > 0) {
                    try {
                        br = new BufferedReader(new InputStreamReader(input, charset));
                    } catch (Exception e) {
                        br = null;
                    }
                }

                if (br == null) {
                    br = new BufferedReader(new InputStreamReader(input));
                }
            }
        } catch (Exception e) {
            progressString = "Failed to open input stream to remote resource";
            progressUpdated = true;
            throw e;
        }

        /* open output stream, if necessary */
        if (target instanceof File) {
            checkState();
            progressString = "Opening output stream to local file";
            progressUpdated = true;

            try {
                /* create parent directories, if necessary */
                final File f = (File) target;
                final File parent = f.getParentFile();

                if ((parent != null) && !parent.exists()) {
                    parent.mkdirs();
                }

                bos = new BufferedOutputStream(f.getFileOutputStream());
            } catch (Exception e) {
                progressString = "Failed to open output stream to local file";
                progressUpdated = true;
                throw e;
            }
        }

        /* download remote resource iteratively */
        progressString = "Downloading";
        progressUpdated = true;

        try {
            if (target instanceof File) {
                final byte[] byteBuffer = new byte[BUFFER_SIZE];

                while (true) {
                    checkState();
                    final int byteCount = bis.read(byteBuffer, 0, BUFFER_SIZE);

                    /* check for end-of-stream */
                    if (byteCount == -1) {
                        break;
                    }

                    bos.write(byteBuffer, 0, byteCount);

                    synchronized (lengthLock) {
                        downloadedLength += byteCount;
                    }

                    progressUpdated = true;
                }
            } else if (target instanceof StringBuilder) {
                final char[] charBuffer = new char[BUFFER_SIZE];
                final StringBuilder sb = (StringBuilder) target;

                while (true) {
                    checkState();
                    final int charCount = br.read(charBuffer, 0, BUFFER_SIZE);

                    /* check for end-of-stream */
                    if (charCount == -1) {
                        break;
                    }

                    sb.append(charBuffer, 0, charCount);

                    synchronized (lengthLock) {
                        downloadedLength += charCount; /* may be inaccurate because byte != char */
                    }

                    progressUpdated = true;
                }
            }
        } catch (Exception e) {
            progressString = "Failed to download remote resource";
            progressUpdated = true;
            throw e;
        }

        /* download completed successfully */
        progressString = "Download completed";
        progressUpdated = true;
    } catch (Exception e) {
        error = e;
    } finally {
        /* clean-up */
        for (Closeable c : new Closeable[] { bis, br, bos }) {
            if (c != null) {
                try {
                    c.close();
                } catch (Exception e) {
                    /* ignore */
                }
            }
        }

        synchronized (stateLock) {
            running = false;
            completed = true;
        }
    }
}

---

From source file:gov.nih.nci.ncicb.tcga.dcc.dam.dao.DAMQueriesLevel2.java

private void closeFile(final Closeable fileStream) {
    try {//from  w w  w . jav a2  s  .com
        fileStream.close();
    } catch (IOException ie) {
        logger.logToLogger(Level.ERROR, "Error closing file " + ie.getMessage());
    }

}

---

From source file:com.atomicleopard.thundr.ftp.commons.SocketClient.java

private void closeQuietly(Closeable close) {
    if (close != null) {
        try {/*  w  ww.jav a2  s .  c om*/
            close.close();
        } catch (IOException e) {
        }
    }
}

---

From source file:org.escidoc.browser.ui.tools.FilterButtonListener.java

private ByteArrayInputStream zip(final Set<ResourceModel> set) throws IOException, EscidocClientException {
    final ByteArrayOutputStream out = new ByteArrayOutputStream();
    Closeable res = out;
    try {/*from  w w  w . ja v a2s.com*/
        final ZipOutputStream zout = new ZipOutputStream(out);
        res = zout;
        for (final ResourceModel resourceModel : set) {
            zout.putNextEntry(new ZipEntry(resourceModel.getId()));
            // TODO
            String asXmlString = repositories.findByType(resourceModel.getType())
                    .getAsXmlString(resourceModel.getId());
            Utils.copy(new ByteArrayInputStream(asXmlString.getBytes("UTF-8")), zout);
            zout.closeEntry();
        }
    } finally {
        res.close();
    }
    return new ByteArrayInputStream(out.toByteArray());

}

---

From source file:org.apache.carbondata.core.statusmanager.SegmentUpdateStatusManager.java

/**
 * This method closes the streams/* w ww  .  j  a va  2 s .c  om*/
 *
 * @param streams - streams to close.
 */
private void closeStreams(Closeable... streams) {
    // Added if to avoid NullPointerException in case one stream is being passed as null
    if (null != streams) {
        for (Closeable stream : streams) {
            if (null != stream) {
                try {
                    stream.close();
                } catch (IOException e) {
                    LOG.error("Error while closing stream" + stream);
                }
            }
        }
    }
}

---

From source file:org.urbanstew.soundcloudapi.SoundCloudAPI.java

private void closeQuietly(Closeable closeable) {
    try {//  w  ww .j a  v  a2  s.co m
        if (closeable != null)
            closeable.close();
    } catch (Exception e) {
        System.err.println("Exception during Closeable close: " + e);
    }
}

---

From source file:org.mitre.dsmiley.httpproxy.ProxyServlet.java

protected void closeQuietly(Closeable closeable) {
    try {/*from  w w  w .j  a  v a  2  s  . co m*/
        closeable.close();
    } catch (IOException e) {
        System.out.println(e.getMessage());
    }
}

---

From source file:corner.payment.services.impl.processor.AlipayProcessor.java

@Override
public boolean verifyNotify(String notifyId) {
    if (notifyId == null) {
        throw new IllegalArgumentException("The notifyId is null");
    }// www  .  j  av a  2s .  co m
    String alipayNotifyURL = String.format("%s?partner=%s&notify_id=%s", QUERY_URL, partner, notifyId);
    java.io.Closeable input = null;
    try {
        URL url = new URL(alipayNotifyURL);
        HttpURLConnection urlConnection = (HttpURLConnection) url.openConnection();
        urlConnection.setDoOutput(false);
        urlConnection.setConnectTimeout(30 * 1000);
        urlConnection.setReadTimeout(30 * 1000);
        BufferedReader in = new BufferedReader(new InputStreamReader(urlConnection.getInputStream()));
        input = in;
        String inputLine = in.readLine().toString();
        urlConnection.disconnect();
        if ("true".equalsIgnoreCase(inputLine)) {
            return true;
        }
    } catch (Exception e) {
        e.printStackTrace();
    } finally {
        if (input != null) {
            try {
                input.close();
            } catch (IOException e) {
            }
        }
    }
    return false;
}

---

From source file:io.selendroid.server.model.DefaultSelendroidDriver.java

@Override
@SuppressWarnings("deprecation")
public byte[] takeScreenshot() {
    ViewHierarchyAnalyzer viewAnalyzer = ViewHierarchyAnalyzer.getDefaultInstance();

    // TODO ddary review later, but with getRecentDecorView() it seems to work better
    // long drawingTime = 0;
    // View container = null;
    // for (View view : viewAnalyzer.getTopLevelViews()) {
    // if (view != null && view.isShown() && view.hasWindowFocus()
    // && view.getDrawingTime() > drawingTime) {
    // container = view;
    // drawingTime = view.getDrawingTime();
    // }// w  ww. j  a  v a2  s  .  c om
    // }
    // final View mainView = container;
    final View mainView = viewAnalyzer.getRecentDecorView();
    if (mainView == null) {
        throw new SelendroidException("No open windows.");
    }
    done = false;
    long end = System.currentTimeMillis() + serverInstrumentation.getAndroidWait().getTimeoutInMillis();
    final byte[][] rawPng = new byte[1][1];
    ServerInstrumentation.getInstance().getCurrentActivity().runOnUiThread(new Runnable() {
        public void run() {
            synchronized (syncObject) {
                Display display = serverInstrumentation.getCurrentActivity().getWindowManager()
                        .getDefaultDisplay();
                Point size = new Point();
                try {
                    display.getSize(size);
                } catch (NoSuchMethodError ignore) { // Older than api level 13
                    size.x = display.getWidth();
                    size.y = display.getHeight();
                }

                // Get root view
                View view = mainView.getRootView();

                // Create the bitmap to use to draw the screenshot
                final Bitmap bitmap = Bitmap.createBitmap(size.x, size.y, Bitmap.Config.ARGB_8888);
                final Canvas canvas = new Canvas(bitmap);

                // Get current theme to know which background to use
                final Activity activity = serverInstrumentation.getCurrentActivity();
                final Theme theme = activity.getTheme();
                final TypedArray ta = theme
                        .obtainStyledAttributes(new int[] { android.R.attr.windowBackground });
                final int res = ta.getResourceId(0, 0);
                final Drawable background = activity.getResources().getDrawable(res);

                // Draw background
                background.draw(canvas);

                // Draw views
                view.draw(canvas);

                ByteArrayOutputStream stream = new ByteArrayOutputStream();
                if (!bitmap.compress(Bitmap.CompressFormat.PNG, 70, stream)) {
                    throw new RuntimeException("Error while compressing screenshot image.");
                }
                try {
                    stream.flush();
                    stream.close();
                } catch (IOException e) {
                    throw new RuntimeException("I/O Error while capturing screenshot: " + e.getMessage());
                } finally {
                    Closeable closeable = (Closeable) stream;
                    try {
                        if (closeable != null) {
                            closeable.close();
                        }
                    } catch (IOException ioe) {
                        // ignore
                    }
                }
                rawPng[0] = stream.toByteArray();
                mainView.destroyDrawingCache();
                done = true;
                syncObject.notify();
            }
        }
    });

    waitForDone(end, serverInstrumentation.getAndroidWait().getTimeoutInMillis(), "Failed to take screenshot.");
    return rawPng[0];
}

---

From source file:hu.api.SivaPlayerVideoServlet.java

/**
 * Close closable resource./*from  w  ww. j  a v  a 2 s.  c  o m*/
 * 
 * @param resource
 *            to close.
 */
private static void close(Closeable resource) {

    // Check if specified file is not null and try to close it if so
    if (resource != null) {
        try {
            resource.close();
        } catch (IOException ignore) {
            // ignore
        }
    }
}

---

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