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

/**
 * Sets the vm policy./*from   w w  w. ja v a  2s  .  c o  m*/
 *
 * @param strictMode
 *            the strict mode to work with
 * @throws ClassNotFoundException
 *             on problem
 * @throws NoSuchMethodException
 *             on problem
 * @throws InstantiationException
 *             on problem
 * @throws IllegalAccessException
 *             on problem
 * @throws InvocationTargetException
 *             on problem
 */
private static void setVmPolicy(final Class<?> strictMode) throws ClassNotFoundException, NoSuchMethodException,
        InstantiationException, IllegalAccessException, InvocationTargetException {
    Class<?> vmPolicyType = Class.forName("android.os.StrictMode$VmPolicy");
    Method setVmPolicy = strictMode.getMethod("setVmPolicy", vmPolicyType);
    Class<?> vmPolicyBuilder = Class.forName("android.os.StrictMode$VmPolicy$Builder");

    Object policy = buildPolicy(vmPolicyBuilder);
    setVmPolicy.invoke(strictMode, policy);
}

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From source file:org.mstc.zmq.json.Decoder.java

static Object getNested(Class<?> nested, byte[] input)
        throws NoSuchMethodException, InvocationTargetException, IllegalAccessException {
    Method parseFrom = nested.getMethod("parseFrom", byte[].class);
    return parseFrom.invoke(null, input);

}

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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  w  w .  ja v  a  2s.c  o m
    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) {
        e.printStackTrace();
    }

    try {
        sh.waitFor();
    } catch (InterruptedException e) {
        e.printStackTrace();
    }

    // AbLogUtil.d(AbAppUtil.class, "#kill -9 "+pid);
    Log.i("AppUtil", 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();
    }

}

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From source file:jp.terasoluna.fw.batch.unit.util.ClassLoaderUtils.java

/**
 * <pre>/*from  w w w  . ja v a  2s  .c o m*/
 * ??????url???????
 * ???????
 * 
 * ????
 * ????????????
 * {@link #resetClassLoader()}???????
 * </pre>
 * 
 * @param url ?
 */
public static void addClassPath(URL url) {
    Assert.notNull(url);
    ClassLoader cl = getClassLoader();

    URLClassLoader newCl = null;
    if (cl instanceof URLClassLoader) {
        @SuppressWarnings("resource")
        URLClassLoader ucl = (URLClassLoader) cl;
        newCl = new URLClassLoader(ucl.getURLs(), cl);
    } else {
        newCl = new URLClassLoader(null, cl);
    }

    Method method = getAddURLMethod();

    try {
        method.invoke(newCl, url);
    } catch (Exception e) {
        throw new UTRuntimeException(e);
    }

    previousClassLoader = cl;
    setClassLoader(newCl);
}

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From source file:ClassUtils.java

/**
 * Helper for invoking a static method that takes one parameter.
 * /*from   w  ww  .  j  ava  2 s  .c o  m*/
 * @param cl
 *            The class that implements the static method
 * @param methodName
 *            The method name
 * @param param
 *            A parameter
 * @param paramClass
 *            Class of the parameter
 * @throws Throwable
 */
public static Object invokeStaticMethod(Class cl, String methodName, Object param, Class paramClass)
        throws Throwable {
    Method method = cl.getMethod(methodName, new Class[] { paramClass });
    try {
        return method.invoke(null, new Object[] { param });
    } catch (InvocationTargetException e) {
        throw e.getCause();
    }
}

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From source file:Main.java

public static void removeSysKey(Activity context, EditText paramEditText) {
    if (Build.VERSION.SDK_INT <= 10) {
        paramEditText.setInputType(0);//from   w  ww.j av  a2s. c  o m
        return;
    }
    context.getWindow().setSoftInputMode(3);
    try {
        Class[] arrayOfClass = new Class[1];
        arrayOfClass[0] = Boolean.TYPE;
        Method localMethod = EditText.class.getMethod("setShowSoftInputOnFocus", arrayOfClass);
        localMethod.setAccessible(true);
        Object[] arrayOfObject = new Object[1];
        arrayOfObject[0] = Boolean.valueOf(false);
        localMethod.invoke(paramEditText, arrayOfObject);
        return;
    } catch (Exception localException) {
        localException.printStackTrace();
    }
}

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From source file:com.xhsoft.framework.common.utils.ReflectUtil.java

/**
 * <p>Description:ReflectionMap?</p>
 * @param target/* w w w.  j av a 2s .c  om*/
 * @return Map<String,Object>
 * @author wanggq
 * @since  2009-9-9
 */
@SuppressWarnings("unchecked")
public static Map<String, Object> getMapFieldData(Object target) {
    Map<String, Object> map = new HashMap<String, Object>();
    Class clazz = target.getClass();
    Field[] fields = clazz.getDeclaredFields();
    Method[] methods = clazz.getDeclaredMethods();
    for (Field field : fields) {
        String fieldName = field.getName();

        if ("messageTypeId".equals(fieldName)) {
            continue;
        }

        String getMethod = "get" + StringUtils.capitalize(fieldName);
        for (Method method : methods) {
            if (method.getName().equals(getMethod)) {

                try {
                    Object ret = method.invoke(target, null);
                    map.put(fieldName, ret);
                } catch (IllegalArgumentException e) {
                    e.printStackTrace();
                } catch (IllegalAccessException e) {
                    e.printStackTrace();
                } catch (InvocationTargetException e) {
                    e.printStackTrace();
                }

            }

        }

    }

    return map;
}

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From source file:com.github.yongchristophertang.engine.java.LoggerProxyHelper.java

static Object addLogger(Logger logger, Method method, Object[] args, Object client) throws Throwable {
    if (method.getDeclaringClass() == Object.class) {
        return method.invoke(client, args);
    }//from  w  ww .  j  a v  a  2s  .  co  m

    String formatter = "\n\tAPI: " + method.getName() + "\n\n";
    formatter += "\tInput:\n";
    for (int i = 0; i < method.getParameterCount(); i++) {
        formatter += "\t\t" + method.getParameters()[i].getName() + " ("
                + method.getParameters()[i].getType().getSimpleName() + "): ";
        if (args[i] == null) {
            formatter += "NULL";
        } else if (args[i] instanceof Iterable) {
            int cnt = 0;
            Iterator iter = ((Iterable) args[i]).iterator();
            while (iter.hasNext()) {
                formatter += "\n\t\t\t[" + (++cnt) + "]: " + toPrinterString(iter.next(), false);
            }
        } else {
            formatter += toPrinterString(args[i], false);
        }
        formatter += "\n";
    }

    long bf = System.nanoTime();
    Object result;
    try {
        result = method.invoke(client, args);
    } catch (InvocationTargetException e) {
        formatter += "\n\tException: \n\t\t" + e.getTargetException();
        formatter += "\n=======================================================================\n";
        logger.info(formatter);
        throw e.getTargetException();
    }
    long af = System.nanoTime();

    formatter += "\n\tResponse Time(ms): " + (af - bf) / 1000000 + "\n\n\tOutput:\n";

    if (result == null) {
        formatter += "\t\tNULL\n";
    } else if (result instanceof Iterable) {
        Iterator iter = ((Iterable) result).iterator();
        int cnt = 0;
        while (iter.hasNext()) {
            formatter += "\t\t[" + (++cnt) + "]: " + toPrinterString(iter.next(), true) + "\n";
        }
        if (cnt == 0) {
            formatter += "\t\tEmpty Collection []\n";
        }
    } else {
        formatter += "\t\t" + toPrinterString(result, true) + "\n";
    }

    formatter += "=======================================================================\n";
    logger.info(formatter);
    return result;
}

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From source file:com.stratuscom.harvester.liaison.VirtualFileSystemConfiguration.java

private static void setManagerClassLoader() {
    try {//from ww  w.jav a2 s. co  m
        Object mgr = VFS.getManager();
        Method setter = mgr.getClass().getMethod("setClassLoader", new Class[] { ClassLoader.class });
        setter.invoke(mgr, new Object[] { mgr.getClass().getClassLoader() });
    } catch (Throwable t) {
        t.printStackTrace();
    }

}

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From source file:Main.java

/**
 * Variant of set() to establish initialValue. Used instead
 * of set() in case user has overridden the set() method.
 *
 * @return the initial value/*from  w  ww  .  ja  v  a 2 s  .c  o  m*/
 * @throws NoSuchMethodException 
 * @throws SecurityException 
 * @throws InvocationTargetException 
 * @throws IllegalAccessException 
 * @throws IllegalArgumentException 
 * @throws NoSuchFieldException 
 */
@SuppressWarnings("unchecked")
private static <T extends Object> T setInitialValue(Thread thread, ThreadLocal<T> threadLocal)
        throws SecurityException, NoSuchMethodException, IllegalArgumentException, IllegalAccessException,
        InvocationTargetException, NoSuchFieldException {
    T value = null;
    // value = threadLocal.initialValue();
    Method initialValueMethod = ThreadLocal.class.getDeclaredMethod("initialValue", (Class<?>[]) null);
    initialValueMethod.setAccessible(true);
    value = (T) initialValueMethod.invoke(threadLocal, (Object[]) null);

    Object map = getMap(thread);
    if (map != null) {
        // map.set(this, value);
        Method setMethod = map.getClass().getDeclaredMethod("set",
                new Class<?>[] { ThreadLocal.class, Object.class });
        setMethod.setAccessible(true);
        setMethod.invoke(map, new Object[] { threadLocal, value });
    } else {
        //createMap(t, value);
        createMap(thread, threadLocal, value);
    }
    return value;
}

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