Example usage for java.lang Class getDeclaredField

List of usage examples for java.lang Class getDeclaredField

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Introduction

In this page you can find the example usage for java.lang Class getDeclaredField.

Prototype

@CallerSensitive
public Field getDeclaredField(String name) throws NoSuchFieldException, SecurityException

Source Link

Document

Returns a Field object that reflects the specified declared field of the class or interface represented by this Class object.

Usage

From source file:Main.java

public static void setDataEnabled(Context context, boolean enabled) {
    ConnectivityManager conMgr = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
    Class<?> conMgrClass = null;
    Field iConMgrField = null;//from   w  ww.  jav  a  2  s .co  m
    Object iConMgr = null;
    Class<?> iConMgrClass = null;
    Method setMobileDataEnabledMethod = null;
    try {
        conMgrClass = Class.forName(conMgr.getClass().getName());
        iConMgrField = conMgrClass.getDeclaredField("mService");
        iConMgrField.setAccessible(true);
        iConMgr = iConMgrField.get(conMgr);
        iConMgrClass = Class.forName(iConMgr.getClass().getName());
        setMobileDataEnabledMethod = iConMgrClass.getDeclaredMethod("setMobileDataEnabled", Boolean.TYPE);
        setMobileDataEnabledMethod.setAccessible(true);
        setMobileDataEnabledMethod.invoke(iConMgr, enabled);
    } catch (Exception e) {
        e.printStackTrace();
    }
}

From source file:com.shrj.util.ReflectionUtils.java

public static Class getClassGenricType(final Class clazz, final int index) {
    try {/*from  w  ww. j  ava 2  s.c o m*/
        Field f = clazz.getDeclaredField("typeList");
        Type t = f.getGenericType();
        if (t instanceof ParameterizedType) {
            Type[] params = ((ParameterizedType) t).getActualTypeArguments();

            if (index >= params.length || index < 0) {
                return Object.class;
            }

            //            System.out.println(params[index]);
            return null;
        }

    } catch (SecurityException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    } catch (NoSuchFieldException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
    return Object.class;
}

From source file:com.jb.statistics.common.utils.ReflectionUtils.java

public static Class getClassGenricType(final Class clazz, final int index) {
    try {/*from  ww w  .  j  av a 2  s  .co m*/
        Field f = clazz.getDeclaredField("typeList");
        Type t = f.getGenericType();
        if (t instanceof ParameterizedType) {
            Type[] params = ((ParameterizedType) t).getActualTypeArguments();

            if (index >= params.length || index < 0) {
                return Object.class;
            }

            // System.out.println(params[index]);
            return null;
        }

    } catch (SecurityException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    } catch (NoSuchFieldException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
    return Object.class;
}

From source file:com.qualogy.qafe.business.integration.adapter.MappingAdapter.java

private static Object adaptToJavaObject(String mappingId, String attributeName, Object result,
        Object valueToAdapt, ClassLoader classLoader) {
    try {/*from  w  w  w  .  j a  v a2  s. co  m*/
        if (valueToAdapt != null) {
            Class resultClazz = classLoader.loadClass(result.getClass().getName());

            Field field = resultClazz.getDeclaredField(attributeName);
            field.setAccessible(true);
            String fieldName = field.getType().getName();
            String valueName = valueToAdapt.getClass().getName();
            logger.info(field.getType().getName());

            if (!fieldName.equals(valueName)) {
                if (PredefinedClassTypeConverter.isPredefined(field.getType()))
                    valueToAdapt = PredefinedAdapterFactory.create(field.getType()).convert(valueToAdapt);
                else
                    throw new IllegalArgumentException("Object passed [" + valueToAdapt
                            + "] cannot be converted to type wanted[" + field.getType() + "] for field["
                            + field.getName() + "] in adapter[" + mappingId + "]");
            } else {
                if (!PredefinedClassTypeConverter.isPredefined(field.getType())) {
                    Class paramClazz = classLoader.loadClass(fieldName);
                    valueToAdapt = paramClazz.cast(valueToAdapt);
                }
            }
            field.set(result, valueToAdapt);
        }
    } catch (IllegalArgumentException e) {
        throw new UnableToAdaptException(
                "arg [" + valueToAdapt + "] is illegal for field with name [" + attributeName + "]", e);
    } catch (SecurityException e) {
        throw new UnableToAdaptException(e);
    } catch (IllegalAccessException e) {
        throw new UnableToAdaptException(
                "field [" + attributeName + "] does not accessible on class [" + result.getClass() + "]", e);
    } catch (NoSuchFieldException e) {
        logger.log(Level.WARNING,
                "field [" + attributeName + "] does not exist on class [" + result.getClass() + "]", e);
    } catch (ClassNotFoundException e) {
        throw new UnableToAdaptException(
                "field [" + attributeName + "] class not found [" + result.getClass() + "]", e);
    }
    return result;
}

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

@TargetApi(Build.VERSION_CODES.KITKAT) // for android.util.ArrayMap methods
@SuppressWarnings("rawtypes")
private static boolean setWebkitProxyLollipop(Context appContext, String host, int port) {
    System.setProperty("http.proxyHost", host);
    System.setProperty("http.proxyPort", port + "");
    System.setProperty("https.proxyHost", host);
    System.setProperty("https.proxyPort", port + "");
    try {//from ww  w  .j a  va 2  s  . c  om
        Class applictionClass = Class.forName("android.app.Application");
        Field mLoadedApkField = applictionClass.getDeclaredField("mLoadedApk");
        mLoadedApkField.setAccessible(true);
        Object mloadedApk = mLoadedApkField.get(appContext);
        Class loadedApkClass = Class.forName("android.app.LoadedApk");
        Field mReceiversField = loadedApkClass.getDeclaredField("mReceivers");
        mReceiversField.setAccessible(true);
        ArrayMap receivers = (ArrayMap) mReceiversField.get(mloadedApk);
        for (Object receiverMap : receivers.values()) {
            for (Object receiver : ((ArrayMap) receiverMap).keySet()) {
                Class clazz = receiver.getClass();
                if (clazz.getName().contains("ProxyChangeListener")) {
                    Method onReceiveMethod = clazz.getDeclaredMethod("onReceive", Context.class, Intent.class);
                    Intent intent = new Intent(Proxy.PROXY_CHANGE_ACTION);
                    onReceiveMethod.invoke(receiver, appContext, intent);
                }
            }
        }
        return true;
    } catch (ClassNotFoundException e) {
    } catch (NoSuchFieldException e) {
    } catch (IllegalAccessException e) {
    } catch (NoSuchMethodException e) {
    } catch (InvocationTargetException e) {
    }
    return false;
}

From source file:Main.java

public static String getResourceString(String recourceName, Activity context) {
    Class rStringClass = null;
    try {//  www.  j a v a2  s.c o  m
        if (rStringClass == null) {
            rStringClass = Class.forName(
                    new StringBuilder().append(context.getPackageName()).append(".R$string").toString());
        }
        return context.getResources()
                .getString(((Integer) rStringClass.getDeclaredField(recourceName).get(null)).intValue());
    } catch (Exception e) {
        Log.e(context.getPackageName(), e.getMessage(), e);
        context.finish();
    }
    return "";
}

From source file:com.sixt.service.framework.servicetest.helper.DockerComposeHelper.java

@SuppressWarnings("unchecked")
private static void setEnv(Map<String, String> newEnv) {
    try {//ww  w. j a va  2  s.  c  o  m
        Class<?> processEnvironmentClass = Class.forName("java.lang.ProcessEnvironment");
        Field theEnvironmentField = processEnvironmentClass.getDeclaredField("theEnvironment");
        theEnvironmentField.setAccessible(true);
        Map<String, String> env = (Map<String, String>) theEnvironmentField.get(null);
        env.putAll(newEnv);
        Field theCaseInsensitiveEnvironmentField = processEnvironmentClass
                .getDeclaredField("theCaseInsensitiveEnvironment");
        theCaseInsensitiveEnvironmentField.setAccessible(true);
        Map<String, String> cienv = (Map<String, String>) theCaseInsensitiveEnvironmentField.get(null);
        cienv.putAll(newEnv);
    } catch (NoSuchFieldException e) {
        try {
            Class[] classes = Collections.class.getDeclaredClasses();
            Map<String, String> env = System.getenv();
            for (Class cl : classes) {
                if ("java.util.Collections$UnmodifiableMap".equals(cl.getName())) {
                    Field field = cl.getDeclaredField("m");
                    field.setAccessible(true);
                    Object obj = field.get(env);
                    Map<String, String> map = (Map<String, String>) obj;
                    map.clear();
                    map.putAll(newEnv);
                }
            }
        } catch (Exception e2) {
            e2.printStackTrace();
        }
    } catch (Exception e1) {
        e1.printStackTrace();
    }
}

From source file:shiver.me.timbers.spring.security.WrappedUsernamePasswordAuthenticationFilterTest.java

private static Object extractFiledValue(Class type, Object object, String fieldName)
        throws IllegalAccessException {
    if (Object.class.equals(type)) {
        return null;
    }/*from w  w  w .ja va2 s  .  co m*/

    try {
        final Field field = type.getDeclaredField(fieldName);
        field.setAccessible(true);
        return field.get(object);
    } catch (NoSuchFieldException e) {
        return extractFiledValue(type.getSuperclass(), object, fieldName);
    }
}

From source file:com.cloudera.recordservice.tests.ClusterController.java

/**
 * This method allows the caller to add environment variables to the JVM.
 * There is no easy way to do this through a simple call, such as there is to
 * read env variables using System.getEnv(variableName). Much of the method
 * was written with guidance from stack overflow:
 * http://stackoverflow.com/questions/*from  ww w. j  a  v  a2s. c  o m*/
 * /318239/how-do-i-set-environment-variables-from-java
 */
protected static void setEnv(Map<String, String> newenv) {
    try {
        Class<?> processEnvironmentClass = Class.forName("java.lang.ProcessEnvironment");
        Field theEnvironmentField = processEnvironmentClass.getDeclaredField("theEnvironment");
        theEnvironmentField.setAccessible(true);
        Map<String, String> env = (Map<String, String>) theEnvironmentField.get(null);
        env.putAll(newenv);
        Field theCaseInsensitiveEnvironmentField = processEnvironmentClass
                .getDeclaredField("theCaseInsensitiveEnvironment");
        theCaseInsensitiveEnvironmentField.setAccessible(true);
        Map<String, String> cienv = (Map<String, String>) theCaseInsensitiveEnvironmentField.get(null);
        cienv.putAll(newenv);
    } catch (NoSuchFieldException e) {
        try {
            Class[] classes = Collections.class.getDeclaredClasses();
            Map<String, String> env = System.getenv();
            for (Class cl : classes) {
                if ("java.util.Collections$UnmodifiableMap".equals(cl.getName())) {
                    Field field = cl.getDeclaredField("m");
                    field.setAccessible(true);
                    Object obj = field.get(env);
                    Map<String, String> map = (Map<String, String>) obj;
                    map.clear();
                    map.putAll(newenv);
                }
            }
        } catch (Exception e2) {
            e2.printStackTrace();
        }
    } catch (Exception e1) {
        e1.printStackTrace();
    }
}

From source file:com.elasticbox.jenkins.k8s.util.TestUtils.java

public static void setEnv(Map<String, String> newenv) {
    try {//w w w .j  ava  2 s. c om
        Class<?> processEnvironmentClass = Class.forName("java.lang.ProcessEnvironment");
        Field theEnvironmentField = processEnvironmentClass.getDeclaredField("theEnvironment");
        theEnvironmentField.setAccessible(true);
        Map<String, String> env = (Map<String, String>) theEnvironmentField.get(null);
        env.putAll(newenv);
        Field theCaseInsensitiveEnvironmentField = processEnvironmentClass
                .getDeclaredField("theCaseInsensitiveEnvironment");
        theCaseInsensitiveEnvironmentField.setAccessible(true);
        Map<String, String> cienv = (Map<String, String>) theCaseInsensitiveEnvironmentField.get(null);
        cienv.putAll(newenv);
    } catch (NoSuchFieldException e) {
        try {
            Class[] classes = Collections.class.getDeclaredClasses();
            Map<String, String> env = System.getenv();
            for (Class cl : classes) {
                if ("java.util.Collections$UnmodifiableMap".equals(cl.getName())) {
                    Field field = cl.getDeclaredField("m");
                    field.setAccessible(true);
                    Object obj = field.get(env);
                    Map<String, String> map = (Map<String, String>) obj;
                    map.putAll(newenv);
                }
            }
        } catch (Exception e2) {
            e2.printStackTrace();
        }
    } catch (Exception e1) {
        e1.printStackTrace();
    }
}