Example usage for java.lang.reflect Field get

List of usage examples for java.lang.reflect Field get

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Introduction

In this page you can find the example usage for java.lang.reflect Field get.

Prototype

@CallerSensitive
@ForceInline 
public Object get(Object obj) throws IllegalArgumentException, IllegalAccessException

Source Link

Document

Returns the value of the field represented by this Field , on the specified object.

Usage

From source file:com.facebook.hiveio.log.HiveLogHelpers.java

/**
 * Add class logger to the list of logs//  ww w .  j  a v  a 2  s .  co m
 *
 * @param logs List of logs
 * @param klass Class whose logger we want to add
 */
private static void addPrivateStaticLog(List<Log> logs, Class<?> klass) {
    try {
        Field logField = klass.getDeclaredField("LOG");
        logField.setAccessible(true);
        Log driverLog = (Log) logField.get(null);
        logs.add(driverLog);
    } catch (IllegalAccessException e) {
        LOG.error("Could not get LOG from Hive ql.Driver", e);
    } catch (NoSuchFieldException e) {
        LOG.error("Could not get LOG from Hive ql.Driver", e);
    }
}

From source file:com.mycompany.client.bank.utils.CryptMessage.java

public static Object toInternal(String SuperSecret, Object criptStrings) {
    Class curClass = criptStrings.getClass();
    byte[] syperSecretBytes = null;
    try {//from   w  ww  .ja va  2 s  .c  o m
        syperSecretBytes = SuperSecret.getBytes("utf-8");
    } catch (UnsupportedEncodingException ex) {
        Logger.getLogger(CryptMessage.class.getName()).log(Level.SEVERE, null, ex);
    }
    for (Field field : curClass.getDeclaredFields()) {
        try {
            String str = null;
            if (field.get(criptStrings) != null)
                str = field.get(criptStrings).toString();
            if (str != null) {
                byte[] mybyte = str.getBytes("utf-8");
                int i = 0;
                ByteTransform(syperSecretBytes, mybyte, i);
                field.set(criptStrings, new String(mybyte, "utf-8"));
            }
        } catch (UnsupportedEncodingException | IllegalArgumentException | IllegalAccessException ex) {
            Logger.getLogger(CryptMessage.class.getName()).log(Level.SEVERE, null, ex);
        }
    }
    return criptStrings;
}

From source file:Main.java

public static void dumphreadLocals()
        throws NoSuchFieldException, IllegalAccessException, ClassNotFoundException {
    Thread thread = Thread.currentThread();
    Field threadLocalField = thread.getClass().getDeclaredField("threadLocals");
    threadLocalField.setAccessible(true);
    Object threadLocalTable = threadLocalField.get(thread);

    Class threadLocalMapClass = Class.forName("java.lang.ThreadLocal$ThreadLocalMap");
    //Class threadLocalMapClass = Class.forName(threadLocalField.getType().getName());
    Field tableField = threadLocalMapClass.getDeclaredField("table");
    tableField.setAccessible(true);// ww  w . j  a  va 2 s.  c o m
    Object[] table = (Object[]) tableField.get(threadLocalTable);

    Class threadLocalMapEntryClass = Class.forName("java.lang.ThreadLocal$ThreadLocalMap$Entry");
    Field entryValueField = threadLocalMapEntryClass.getDeclaredField("value");
    entryValueField.setAccessible(true);

    //Field referenceField = Reference.class.getDeclaredField("referent") ;
    //referenceField.setAccessible(true);

    for (Object entry : table) {
        if (entry != null) {
            Object threadLocalValue = entryValueField.get(entry);
            printObject(threadLocalValue);
            //ThreadLocal threadLocal = (ThreadLocal)referenceField.get(entry);
            //System.out.println("thread local  value "+threadLocal);
        }
    }
}

From source file:Main.java

@TargetApi(Build.VERSION_CODES.KITKAT)
private static boolean setProxyLollipop(final Context context, 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  av a2 s  .c  om
        Context appContext = context.getApplicationContext();
        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);
                }
            }
        }
    } catch (Exception e) {
        e.printStackTrace();
        return false;
    }

    return true;
}

From source file:com.erinors.hpb.tests.HpbTestUtils.java

public static void assertEqualsByCloneableFields(Object o1, Object o2) {
    if (o1 == null || o2 == null || o1.getClass() != o2.getClass()) {
        throw new IllegalArgumentException(
                "Non-null objects of same class expected but got: " + o1 + ", " + o2);
    }//from w  w w .  j  a v  a  2 s. com

    List<Field> fields = new LinkedList<Field>();
    ClassUtils.collectCloneableFields(o1.getClass(), fields);

    for (Field field : fields) {
        try {
            ReflectionUtils.makeAccessible(field);

            Object fieldValue1 = field.get(o1);
            Object fieldValue2 = field.get(o2);

            if (!equal(fieldValue1, fieldValue2)) {
                throw new AssertionError("Field value mismatch: " + field + ", value1=" + fieldValue1
                        + ", value2=" + fieldValue2);
            }
        } catch (Exception e) {
            throw new RuntimeException("Cannot copy field: " + field, e);
        }
    }
}

From source file:Main.java

public static String[][] returnTable(Collection E) {
    if ((E == null) || E.isEmpty()) {
        System.out.println("The collection is empty!");
    }/*from w w  w.ja v  a  2  s .co m*/

    Set<Field> collectionFields = new TreeSet<>(new Comparator<Field>() {
        @Override
        public int compare(Field o1, Field o2) {
            return o1.getName().compareTo(o2.getName());
        }
    });
    for (Object o : E) {
        Class c = o.getClass();
        createSetOfFields(collectionFields, c);
        while (c.getSuperclass() != null) {
            c = c.getSuperclass();
            createSetOfFields(collectionFields, c);
        }
    }
    String[][] exitText = new String[E.size() + 1][collectionFields.size() + 1];
    exitText[0][0] = String.format("%20s", "Class");
    int indexOfColumn = 0;
    for (Field f : collectionFields) {
        exitText[0][indexOfColumn + 1] = String.format("%20s", f.getName());
        indexOfColumn++;

    }
    int indexOfRow = 0;
    for (Object o : E) {
        indexOfColumn = 0;
        exitText[indexOfRow + 1][0] = String.format("%20s", o.getClass().getSimpleName());
        for (Field field : collectionFields) {
            try {
                field.setAccessible(true);
                if (field.get(o) instanceof Date) {
                    exitText[indexOfRow + 1][indexOfColumn + 1] = String.format("%20tD", field.get(o));
                } else {
                    String temp = String.valueOf(field.get(o));
                    exitText[indexOfRow + 1][indexOfColumn + 1] = String.format("%20s", temp);
                }
            } catch (Exception e) {
                exitText[indexOfRow + 1][indexOfColumn + 1] = String.format("%20s", "-");
            }
            indexOfColumn++;
        }
        indexOfRow++;
    }
    return exitText;
}

From source file:Main.java

public static LinkedHashMap<String, String> convertBeans(Object bean) {
    if (bean == null)
        return null;
    try {//  ww w.  ja va2  s.  c o  m
        LinkedHashMap<String, String> returnMap = new LinkedHashMap<String, String>();

        Class<? extends Object> clazz = bean.getClass();
        List<Field> fleids = new ArrayList<Field>();
        for (Class<?> c = clazz; c != Object.class; c = c.getSuperclass()) {
            fleids.addAll(Arrays.asList(c.getDeclaredFields()));
        }

        for (Field field : fleids) {
            String value = "";
            field.setAccessible(true);
            try {
                Object result = field.get(bean);
                if (result == null)
                    continue;
                value = result.toString();
            } catch (IllegalAccessException e) {
                e.printStackTrace();
            }
            //            MLogUtil.e("field.getName() "+field.getName());
            //            MLogUtil.e("value "+value);
            returnMap.put(field.getName(), value);
            field.setAccessible(false);
        }
        return returnMap;
    } catch (Exception e) {
        e.printStackTrace();
        return null;
    }
}

From source file:Main.java

public static <T> T getVar(@NonNull Object obj, @NonNull String name) throws Exception {
    for (Class cls = obj.getClass(); //
            cls != null && cls != Object.class; //
            cls = cls.getSuperclass()) {
        for (Field f : cls.getDeclaredFields()) {
            if (f.getName().equals(name)) {
                f.setAccessible(true);//from w w w  .j ava  2 s  . c o m
                //noinspection unchecked
                return (T) f.get(obj);
            }
        }
    }
    throw new RuntimeException("no var matching " + name);
}

From source file:Main.java

/**
 * @param context/*  w w w. j a v  a2  s .  c o  m*/
 *            if null, use the default format (Mozilla/5.0 (Linux; U;
 *            Android %s) AppleWebKit/534.30 (KHTML, like Gecko) Version/4.0
 *            %sSafari/534.30).
 * @return
 */

public static String getUserAgent(Context context) {
    String webUserAgent = null;
    if (context != null) {
        try {
            Class<?> sysResCls = Class.forName("com.android.internal.R$string");
            Field webUserAgentField = sysResCls.getDeclaredField("web_user_agent");
            Integer resId = (Integer) webUserAgentField.get(null);
            webUserAgent = context.getString(resId);
        } catch (Throwable ignored) {
        }
    }
    if (TextUtils.isEmpty(webUserAgent)) {
        webUserAgent = "Mozilla/5.0 (Linux; U; Android %s) AppleWebKit/533.1 (KHTML, like Gecko) Version/4.0 %sSafari/533.1";
    }

    Locale locale = Locale.getDefault();
    StringBuffer buffer = new StringBuffer();
    // Add version
    final String version = Build.VERSION.RELEASE;
    if (version.length() > 0) {
        buffer.append(version);
    } else {
        // default to "1.0"
        buffer.append("1.0");
    }
    buffer.append("; ");
    final String language = locale.getLanguage();
    if (language != null) {
        buffer.append(language.toLowerCase());
        final String country = locale.getCountry();
        if (country != null) {
            buffer.append("-");
            buffer.append(country.toLowerCase());
        }
    } else {
        // default to "en"
        buffer.append("en");
    }
    // add the model for the release build
    if ("REL".equals(Build.VERSION.CODENAME)) {
        final String model = Build.MODEL;
        if (model.length() > 0) {
            buffer.append("; ");
            buffer.append(model);
        }
    }
    final String id = Build.ID;
    if (id.length() > 0) {
        buffer.append(" Build/");
        buffer.append(id);
    }
    return String.format(webUserAgent, buffer, "Mobile ");
}

From source file:Main.java

public static Map<String, String> convertBean(Object bean) {
    if (bean == null)
        return null;
    try {//from   ww  w . j  ava  2s .  co  m
        Class<? extends Object> clazz = bean.getClass();
        Map<String, String> returnMap = new HashMap<String, String>();
        List<Field> fleids = new ArrayList<Field>();
        for (Class<?> c = clazz; c != Object.class; c = c.getSuperclass()) {
            fleids.addAll(Arrays.asList(c.getDeclaredFields()));
        }

        for (Field field : fleids) {
            String value = "";
            field.setAccessible(true);
            try {
                Object result = field.get(bean);
                if (result == null)
                    continue;
                value = result.toString();
            } catch (IllegalAccessException e) {
                e.printStackTrace();
            }
            //            MLogUtil.e("field.getName() "+field.getName());
            //            MLogUtil.e("value "+value);
            returnMap.put(field.getName(), value);
            field.setAccessible(false);
        }
        return returnMap;
    } catch (Exception e) {
        e.printStackTrace();
        return null;
    }
}