Example usage for java.lang.reflect Method invoke

Introduction

In this page you can find the example usage for java.lang.reflect Method invoke.

Prototype

@CallerSensitive
@ForceInline 
@HotSpotIntrinsicCandidate
public Object invoke(Object obj, Object... args)
        throws IllegalAccessException, IllegalArgumentException, InvocationTargetException 

Source Link

Document

Invokes the underlying method represented by this Method object, on the specified object with the specified parameters.

Usage

From source file:Main.java

public static int untetherIface(Context context, String iface) {
    int returnCode = -1;
    Object connectivityManager = context.getSystemService(Context.CONNECTIVITY_SERVICE);
    Method untether = null;
    try {/*from ww  w.j ava2  s  .  c  o  m*/
        untether = connectivityManager.getClass().getMethod("untether", new Class[] { String.class });
    } catch (Exception e) {
        e.printStackTrace();
    }
    try {
        returnCode = (Integer) untether.invoke(connectivityManager, new Object[] { iface });

    } catch (Exception e) {
        e.printStackTrace();
    }
    return returnCode;
}

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From source file:com.apporiented.hermesftp.utils.IOUtils.java

/**
 * Closes a file, socket, stream, writer etc. without throwing exceptions. Any exception is
 * catched and logged. In contrast to the "Commons IO" method <code>closeQuietly()</code> this
 * method closes any object that has a <code>close()</code>-method and is not restricted to
 * readers, writers and streams./*  ww w.  j a v a  2  s.c o  m*/
 * 
 * @param o The object to be closed.
 * @return True, if object could be closed.
 */
public static boolean closeGracefully(Object o) {
    boolean result;
    try {
        Method closeMethod = BeanUtils.findMethod(o.getClass(), "close", null);
        closeMethod.invoke(o, (Object[]) null);
        result = true;
    } catch (IllegalArgumentException e) {
        result = false;
    } catch (IllegalAccessException e) {
        result = false;
    } catch (InvocationTargetException e) {
        result = false;
    } catch (NullPointerException e) {
        result = false;
    }
    return result;
}

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From source file:cn.loveapple.client.android.LoveappleHelper.java

private static Object invokeMethod(Object object, String methodName, Object[] params, Class... types)
        throws Exception {
    Object out = null;//from   w ww.  j ava  2s  . c om
    Class c = object instanceof Class ? (Class) object : object.getClass();
    if (types != null) {
        Method method = c.getMethod(methodName, types);
        out = method.invoke(object, params);
    } else {
        Method method = c.getMethod(methodName);
        out = method.invoke(object);
    }
    Log.d(LOG_TAG, object.getClass().getName() + "." + methodName + "() = " + out);
    return out;
}

---

From source file:com.adaptris.util.SimpleBeanUtil.java

/**
 * Invoke the setter method on the object.
 * <p>//from  w  w  w.  j a v  a2 s.  co m
 * Uses the first match, so overloaded methods may cause unexpected behaviour. Assumes that the {@code String} value can be
 * converted into its corresponding primitive value (long/double/boolean/string/float/int). If it can't a runtime exception is
 * probably going to be thrown.
 * </p>
 * 
 * @param obj the object.
 * @param methodName the method name (e.g. {@code setClientID}, case insensitive match).
 * @param value the value; which will be converted into the appropriate primitive.
 * @return true if the setter was successfully called; false otherwise.
 */
public static boolean callSetter(Object obj, String methodName, String value) {
    boolean result = false;
    try {
        Method m = getSetterMethod(obj.getClass(), methodName);
        Object param = OBJECTIFIERS.get(m.getParameterTypes()[0]).objectify(value);
        m.invoke(obj, param);
        result = true;
    } catch (NullPointerException | IllegalAccessException | IllegalArgumentException
            | InvocationTargetException e) {
    }
    return result;
}

---

From source file:com.mmj.app.common.core.lang.BeanUtils.java

public static Map<String, Object> beanToMap(Object entity) {
    Map<String, Object> parameter = new HashMap<String, Object>();
    Field[] fields = entity.getClass().getDeclaredFields();
    for (int i = 0; i < fields.length; i++) {
        String fieldName = fields[i].getName();
        if (StringUtils.equals("serialVersionUID", fieldName)) {
            continue;
        }/* ww w.  j  av a  2s . c o  m*/
        Object o = null;
        String firstLetter = fieldName.substring(0, 1).toUpperCase();
        String getMethodName = "get" + firstLetter + fieldName.substring(1);
        Method getMethod;
        try {
            getMethod = entity.getClass().getMethod(getMethodName, new Class[] {});
            o = getMethod.invoke(entity, new Object[] {});
        } catch (Exception e) {
            e.printStackTrace();
        }
        if (o != null) {
            parameter.put(fieldName, o);
        }
    }
    return parameter;
}

---

From source file:Main.java

/**
 * //from  www. ja  va 2  s  . c om
 * @param <T>
 * @param thread
 * @param threadLocal
 * @param value
 * @throws NoSuchMethodException
 * @throws IllegalAccessException
 * @throws InvocationTargetException
 */
private static <T extends Object> void createMap(Thread thread, ThreadLocal<T> threadLocal, T value)
        throws NoSuchMethodException, IllegalAccessException, InvocationTargetException {
    Method createMapMethod = ThreadLocal.class.getDeclaredMethod("createMap",
            new Class<?>[] { Thread.class, Object.class });
    createMapMethod.setAccessible(true);
    createMapMethod.invoke(threadLocal, new Object[] { thread, value });
}

---

From source file:ca.psiphon.tunneledwebview.WebViewProxySettings.java

@SuppressWarnings("rawtypes")
private static Object invokeMethod(Object object, String methodName, Object[] params, Class... types)
        throws Exception {
    Object out = null;//from w  w  w  .java 2 s.c  o m
    Class c = object instanceof Class ? (Class) object : object.getClass();

    if (types != null) {
        Method method = c.getMethod(methodName, types);
        out = method.invoke(object, params);
    } else {
        Method method = c.getMethod(methodName);
        out = method.invoke(object);
    }
    return out;
}

---

From source file:Main.java

public static void killProcesses(Context context, int pid, String processName) {

    String cmd = "kill -9 " + pid;
    String Command = "am force-stop " + processName + "\n";
    Process sh = null;/*from w  ww  .  jav  a 2s.  c om*/
    DataOutputStream os = null;
    try {
        sh = Runtime.getRuntime().exec("su");
        os = new DataOutputStream(sh.getOutputStream());
        os.writeBytes(Command + "\n");
        os.writeBytes(cmd + "\n");
        os.writeBytes("exit\n");
        os.flush();

    } catch (IOException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }

    try {
        sh.waitFor();
    } catch (InterruptedException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }

    // AbLogUtil.d(AbAppUtil.class, "#kill -9 "+pid);
    // L.i(processName);
    ActivityManager activityManager = (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE);
    String packageName = null;
    try {
        if (processName.indexOf(":") == -1) {
            packageName = processName;
        } else {
            packageName = processName.split(":")[0];
        }

        activityManager.killBackgroundProcesses(packageName);

        //
        Method forceStopPackage = activityManager.getClass().getDeclaredMethod("forceStopPackage",
                String.class);
        forceStopPackage.setAccessible(true);
        forceStopPackage.invoke(activityManager, packageName);
    } catch (Exception e) {
        e.printStackTrace();
    }

}

---

From source file:org.objectweb.proactive.extensions.timitspmd.util.charts.Utilities.java

/**
 * Exports a JFreeChart to a SVG file./*from   ww w . ja v a 2s.  c o  m*/
 *
 * @param chart
 *            JFreeChart to export
 * @param bounds
 *            the dimensions of the viewport
 * @param svgFile
 *            the output file.
 * @throws IOException
 *             if writing the svgFile fails.
 */
public static void saveChartAsSVG(JFreeChart chart, Rectangle bounds, File svgFile) throws IOException {
    try {
        Class<?> GDI = Class.forName("org.apache.batik.dom.GenericDOMImplementation");

        // Get a DOMImplementation and create an XML document
        Method getDOMImplementation = GDI.getMethod("getDOMImplementation", new Class<?>[0]);
        DOMImplementation domImpl = (DOMImplementation) getDOMImplementation.invoke(null, new Object[0]);

        org.w3c.dom.Document document = domImpl.createDocument(null, "svg", null);

        // Create an instance of the SVG Generator
        Class<?> SG2D = Class.forName("org.apache.batik.svggen.SVGGraphics2D");
        Method streamMethod = SG2D.getMethod("stream", new Class<?>[] { Writer.class, boolean.class });
        Constructor<?> SG2DConstr = SG2D.getConstructor(new Class<?>[] { org.w3c.dom.Document.class });
        Object svgGenerator = SG2DConstr.newInstance(document);

        // draw the chart in the SVG generator
        chart.draw((Graphics2D) svgGenerator, bounds);

        // Write svg file
        OutputStream outputStream = new FileOutputStream(svgFile);
        Writer out = new OutputStreamWriter(outputStream, "UTF-8");
        streamMethod.invoke(svgGenerator, new Object[] { out, true /* use css */ });
        outputStream.flush();
        outputStream.close();
        out.close();
    } catch (Exception e) {
        e.printStackTrace();
    }
}

---

From source file:biz.wolschon.finance.jgnucash.actions.FileBugInBrowserAction.java

/**
        /*from  w  ww. j  a v  a  2s  .c om*/
 * Open the given URL in the default-browser.
 * @param url the URL to open
 * @return false if it did not work
 */
@SuppressWarnings("unchecked")
public static boolean showDocument(final URL url) {

    if (myJNLPServiceManagerObject == null) {
        myJNLPServiceManagerObject = getJNLPServiceManagerObject();
    }

    // we cannot use JNLP -> make an educated guess
    if (myJNLPServiceManagerObject == null) {
        try {
            String osName = System.getProperty("os.name");
            if (osName.startsWith("Mac OS")) {
                Class fileMgr = Class.forName("com.apple.eio.FileManager");
                Method openURL = fileMgr.getDeclaredMethod("openURL", new Class[] { String.class });
                openURL.invoke(null, new Object[] { url });
            } else if (osName.startsWith("Windows")) {
                Runtime.getRuntime().exec("rundll32 url.dll,FileProtocolHandler " + url);
            } else { //assume Unix or Linux
                String[] browsers = { "x-www-browser", "firefox", "iceweasle", "opera", "konqueror", "epiphany",
                        "mozilla", "netscape" };
                String browser = null;
                for (int count = 0; count < browsers.length && browser == null; count++) {
                    if (Runtime.getRuntime().exec(new String[] { "which", browsers[count] }).waitFor() == 0) {
                        browser = browsers[count];
                    }
                    if (browser == null) {
                        return false;
                    } else {
                        Runtime.getRuntime().exec(new String[] { browser, url.toString() });
                        return true;
                    }
                }
            }
        } catch (Exception e) {
            LOGGER.error("Error attempting to launch web browser natively.", e);
            JOptionPane.showMessageDialog(null,
                    "Error attempting to launch web browser:\n" + e.getLocalizedMessage());
        }
    }

    if (myJNLPServiceManagerObject != null) {
        try {
            Method method = myJNLPServiceManagerObject.getClass().getMethod("showDocument",
                    new Class[] { URL.class });
            Boolean resultBoolean = (Boolean) method.invoke(myJNLPServiceManagerObject, new Object[] { url });
            return resultBoolean.booleanValue();
        } catch (Exception ex) {
            JOptionPane.showMessageDialog(null,
                    "Error attempting to launch web browser:\n" + ex.getLocalizedMessage());
        }
    }

    return false;
}

---

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