Example usage for java.lang.ref SoftReference SoftReference

Introduction

In this page you can find the example usage for java.lang.ref SoftReference SoftReference.

Prototype

public SoftReference(T referent)

Source Link

Document

Creates a new soft reference that refers to the given object.

Usage

From source file:Main.java

public static void main(String[] argv) throws Exception {
    SoftReference<String> sr = new SoftReference<String>("object");

    Object o = sr.get();/*from  www  . j  a va 2 s .c om*/
    if (o != null) {
        System.out.println(o);
    } else {
        System.out.println("collected or has been reclaimed");
    }
}

From source file:Main.java

private static StringBuffer getStrBuf() {
    StringBuffer result = null;/*from   ww w .  j av a  2s .  com*/
    if (strBfeCache != null)
        result = strBfeCache.get();
    if (result == null) {
        result = new StringBuffer();
        strBfeCache = new SoftReference<StringBuffer>(result);
    }
    return result;
}

From source file:Main.java

private static void putStringForSoftReference(String requestUrl, String result) {
    // TODO Auto-generated method stub
    SoftReference<String> referece = new SoftReference<String>(result);
    RequestCache.put(requestUrl, referece);
}

From source file:Main.java

public static Bitmap byteToBitmap(byte[] imgByte) {
    InputStream input = null;/*w  ww .  ja v a 2 s  .co  m*/
    Bitmap bitmap = null;
    BitmapFactory.Options options = new BitmapFactory.Options();
    options.inSampleSize = 1;
    input = new ByteArrayInputStream(imgByte);
    SoftReference softRef = new SoftReference(BitmapFactory.decodeStream(input, null, options));
    bitmap = (Bitmap) softRef.get();
    if (imgByte != null) {
        imgByte = null;
    }

    try {
        if (input != null) {
            input.close();
        }
    } catch (IOException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
    return bitmap;
}

From source file:Main.java

public static void showToast(final Context context, final String s) {

    if (Looper.getMainLooper() == Looper.myLooper()) {
        Toast toast = Toast.makeText(context, s, Toast.LENGTH_SHORT);
        hideToast();//  www.  j av a  2s  .  c  om
        toast.show();
        sToastRef = new SoftReference<Toast>(toast);
    } else {
        if (context instanceof Activity) {
            ((Activity) context).runOnUiThread(new Runnable() {
                @Override
                public void run() {
                    showToast(context, s);
                }
            });
        }
    }
}

From source file:Main.java

private static BufferedImage getPooledImage(int width, int height, int index) {
    String key = String.format("%dx%d#%d",
            new Object[] { Integer.valueOf(width), Integer.valueOf(height), Integer.valueOf(index) });
    Reference ref = (Reference) imagePool.get(key);
    BufferedImage image = ref == null ? null : (BufferedImage) ref.get();

    if (image == null) {
        image = new BufferedImage(width, height, 2);
        imagePool.put(key, new SoftReference(image));
    }//  w  w w  .  j av a2s .co m

    return image;
}

From source file:Main.java

public static SoftReference<Bitmap> getBitmap(Resources resources, int drawable) {
    Bitmap bitmap = BitmapFactory.decodeResource(resources, drawable);
    return new SoftReference<Bitmap>(bitmap);
}

From source file:Main.java

/**
 * Returns a cached <i>JAXB Context</i>.
 *
 * @since 3.8//from  w  ww  .j  av a 2 s.  c  o  m
 */
public synchronized static JAXBContext createContext(final Class<?> bind) throws JAXBException {
    JAXBContext context = null;
    SoftReference<JAXBContext> ref = contextCache.get(bind);
    if (ref != null) {
        context = ref.get();
        if (context == null)
            contextCache.remove(bind);
    }

    if (context != null)
        return context;

    synchronized (bind) {
        synchronized (JAXBContext.class) {
            context = JAXBContext.newInstance(bind);
        }
    }

    contextCache.put(bind, new SoftReference<JAXBContext>(context));

    return context;
}

From source file:Main.java

private static void putIntoCache(final String fontname, final Typeface font) {
    synchronized (sTypeCache) {
        sTypeCache.put(fontname, new SoftReference<Typeface>(font));
    }//from  w ww  . j a v  a 2  s .c o  m
}

From source file:Main.java

public static XPath getSharedXPath() {
    XPath xPath = null;/*  w  w w  .j  a va2s  . c om*/
    if (sharedXPath != null)
        xPath = sharedXPath.get();
    if (xPath == null) {
        XPathFactory xPathFactory = XPathFactory.newInstance();
        sharedXPath = new SoftReference<XPath>(xPath = xPathFactory.newXPath());
    }
    return xPath;
}