Example usage for java.lang.reflect Field get

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:net.drgnome.virtualpack.components.VAnvil.java

public static IInventory getInv(VAnvil anvil, String name) {
        try {//from  w  w  w .j a va  2 s  . co  m
            Field f = ContainerAnvil.class.getDeclaredField(name);
            f.setAccessible(true);
            return (IInventory) f.get(anvil);
        } catch (Exception e) {
            e.printStackTrace();
            return null;
        }
    }

---

From source file:Main.java

public static int hashCode(Object target) {
    if (target == null)
        return 0;
    final int prime = 31;
    int result = 1;

    Class<?> current = target.getClass();
    do {//from ww w .j  av a  2 s. c  o m
        for (Field f : current.getDeclaredFields()) {
            if (Modifier.isStatic(f.getModifiers()) || Modifier.isTransient(f.getModifiers())
                    || f.isSynthetic()) {
                continue;
            }

            Object self;
            try {
                f.setAccessible(true);
                self = f.get(target);
            } catch (IllegalAccessException e) {
                throw new IllegalStateException(e);
            }
            if (self == null) {
                result = prime * result + 0;
            } else if (self.getClass().isArray()) {
                if (self.getClass().equals(boolean[].class)) {
                    result = prime * result + Arrays.hashCode((boolean[]) self);
                } else if (self.getClass().equals(char[].class)) {
                    result = prime * result + Arrays.hashCode((char[]) self);
                } else if (self.getClass().equals(byte[].class)) {
                    result = prime * result + Arrays.hashCode((byte[]) self);
                } else if (self.getClass().equals(short[].class)) {
                    result = prime * result + Arrays.hashCode((short[]) self);
                } else if (self.getClass().equals(int[].class)) {
                    result = prime * result + Arrays.hashCode((int[]) self);
                } else if (self.getClass().equals(long[].class)) {
                    result = prime * result + Arrays.hashCode((long[]) self);
                } else if (self.getClass().equals(float[].class)) {
                    result = prime * result + Arrays.hashCode((float[]) self);
                } else if (self.getClass().equals(double[].class)) {
                    result = prime * result + Arrays.hashCode((double[]) self);
                } else {
                    result = prime * result + Arrays.hashCode((Object[]) self);
                }
            } else {
                result = prime * result + self.hashCode();
            }

            System.out.println(f.getName() + ": " + result);
        }
        current = current.getSuperclass();
    } while (!Object.class.equals(current));

    return result;
}

---

From source file:com.music.Generator.java

@SuppressWarnings("unused")
private static void initJMusicSynthesizer() {
    try {//from www  .j av a2 s  .c  om
        Field fld = ReflectionUtils.findField(Play.class, "ms");
        ReflectionUtils.makeAccessible(fld);
        MidiSynth synth = (MidiSynth) fld.get(null);
        // playing for the first time initializes the synthesizer
        try {
            synth.play(null);
        } catch (Exception ex) {
        }
        ;
        Field synthField = ReflectionUtils.findField(MidiSynth.class, "m_synth");
        ReflectionUtils.makeAccessible(synthField);
        Synthesizer synthsizer = (Synthesizer) synthField.get(synth);
        loadSoundbankInstruments(synthsizer);
    } catch (Exception ex) {
        throw new IllegalStateException(ex);
    }

}

---

From source file:com.framework.infrastructure.utils.ReflectionUtils.java

/**
 * , private/protected, getter.//from   w w  w. ja  v a  2  s.c o  m
 */
public static Object getFieldValue(final Object obj, final String fieldName) {
    Field field = getAccessibleField(obj, fieldName);

    if (field == null) {
        throw new IllegalArgumentException("Could not find field [" + fieldName + "] on target [" + obj + "]");
    }

    Object result = null;
    try {
        result = field.get(obj);
    } catch (IllegalAccessException e) {
        logger.error("{}", e.getMessage());
    }
    return result;
}

---

From source file:Main.java

private static int getStatusBarHeight(Activity activity) {
    Class<?> c;//from w  ww  .j  ava 2  s .c  o m
    Object obj;
    Field field;
    int x;
    int statusBarHeight = 0;
    try {
        c = Class.forName("com.android.internal.R$dimen");
        obj = c.newInstance();
        field = c.getField("status_bar_height");
        x = Integer.parseInt(field.get(obj).toString());
        statusBarHeight = activity.getResources().getDimensionPixelSize(x);
    } catch (Exception e1) {
        e1.printStackTrace();
    }
    return statusBarHeight;
}

---

From source file:misc.TestUtils.java

public static List<Pair<String, Object>> getEntityFields(Object o) {
    List<Pair<String, Object>> ret = new ArrayList<Pair<String, Object>>();
    for (Class<?> clazz = o.getClass(); clazz != Object.class; clazz = clazz.getSuperclass()) {
        for (Field field : clazz.getDeclaredFields()) {
            //ignore some weird fields with unique values
            if (field.getName().contains("$"))
                continue;
            boolean accessible = field.isAccessible();
            try {
                field.setAccessible(true);
                Object val = field.get(o);
                ret.add(new Pair<String, Object>(field.getName(), val));
                //               System.out.println(field.getName()+"="+val);
            } catch (IllegalArgumentException e) {
                e.printStackTrace();//from   www. ja va 2s  .c om
            } catch (IllegalAccessException e) {
                e.printStackTrace();
            } catch (SecurityException e) {
                e.printStackTrace();
            } finally {
                field.setAccessible(accessible);
            }
        }
    }
    return ret;
}

---

From source file:io.github.benas.randombeans.util.ReflectionUtils.java

/**
 * Get the value (accessible or not accessible) of a field of a target object.
 *
 * @param object instance to get the field of
 * @param field  field to get the value of
 * @throws IllegalAccessException if field can not be accessed
 *///ww w.  j  a va 2s .  co m
public static Object getFieldValue(final Object object, final Field field) throws IllegalAccessException {
    boolean access = field.isAccessible();
    field.setAccessible(true);
    Object value = field.get(object);
    field.setAccessible(access);
    return value;
}

---

From source file:com.aw.swing.mvp.view.IPView.java

public static List<JComponent> getCmps(Object target) {
    //        logger.info("searching attributes " + target.getClass().getName());
    List components = new ArrayList();
    List<Field> forms = new ArrayList();
    Class cls = target.getClass();
    Field[] fields = cls.getFields();
    for (int i = 0; i < fields.length; i++) {
        if ((fields[i].getName().startsWith("txt") || fields[i].getName().startsWith("chk"))
                && !fields[i].getName().startsWith("chkSel")) {
            JComponent jComponemt;
            try {
                jComponemt = (JComponent) fields[i].get(target);
                if (jComponemt != null) {
                    jComponemt.putClientProperty("Field", fields[i]);
                    components.add(jComponemt);
                } else {
                    System.out.println("Null:<" + target.getClass() + ">- <" + fields[i].getName() + ">");
                }/*  ww w  . j  ava 2  s .  c  o  m*/
            } catch (IllegalAccessException e) {
                e.printStackTrace();
                throw new AWSystemException("Error getting teh value of:<" + fields[i].getName() + ">", e);
            }
        }
        if ((fields[i].getType().getSimpleName().startsWith("Frm"))) {
            forms.add(fields[i]);
        }
    }
    if (forms.size() > 0) {
        for (Field field : forms) {
            try {
                Object formToBeChecked = field.get(target);
                if (formToBeChecked != null) {
                    List formAttributes = getCmps(formToBeChecked);
                    if (formAttributes.size() > 0) {
                        components.addAll(formAttributes);
                    }
                } else {
                    throw new IllegalStateException("FRM NULL:" + field.getName());
                }
            } catch (IllegalAccessException e) {
                e.printStackTrace();
                throw new AWSystemException("Problems getting value for:<" + field.getName() + ">", e);
            }
        }
    }
    return components;
}

---

From source file:net.dv8tion.jda.utils.DebugUtil.java

public static JSONObject fromJDA(JDA iJDA, boolean includeUsers, boolean includeGuilds,
        boolean includeGuildUsers, boolean includeChannels, boolean includePrivateChannels) {
    JDAImpl jda = (JDAImpl) iJDA;/*from  ww w.ja  v a2  s  . co  m*/
    JSONObject obj = new JSONObject();
    obj.put("self_info", fromUser(jda.getSelfInfo()))
            .put("proxy",
                    jda.getGlobalProxy() == null ? JSONObject.NULL
                            : new JSONObject().put("host", jda.getGlobalProxy().getHostName()).put("port",
                                    jda.getGlobalProxy().getPort()))
            .put("response_total", jda.getResponseTotal()).put("audio_enabled", jda.isAudioEnabled())
            .put("auto_reconnect", jda.isAutoReconnect());

    JSONArray array = new JSONArray();
    for (Object listener : jda.getRegisteredListeners())
        array.put(listener.getClass().getCanonicalName());
    obj.put("event_listeners", array);

    try {
        Field f = EntityBuilder.class.getDeclaredField("cachedJdaGuildJsons");
        f.setAccessible(true);
        HashMap<String, JSONObject> cachedJsons = ((HashMap<JDA, HashMap<String, JSONObject>>) f.get(null))
                .get(jda);

        array = new JSONArray();
        for (String guildId : cachedJsons.keySet())
            array.put(guildId);
        obj.put("second_pass_json_guild_ids", array);

        f = EntityBuilder.class.getDeclaredField("cachedJdaGuildCallbacks");
        f.setAccessible(true);
        HashMap<String, Consumer<Guild>> cachedCallbacks = ((HashMap<JDA, HashMap<String, Consumer<Guild>>>) f
                .get(null)).get(jda);

        array = new JSONArray();
        for (String guildId : cachedCallbacks.keySet())
            array.put(guildId);
        obj.put("second_pass_callback_guild_ids", array);
    } catch (NoSuchFieldException e) {
        e.printStackTrace();
    } catch (IllegalAccessException e) {
        e.printStackTrace();
    }

    if (includeGuilds) {
        array = new JSONArray();
        for (Guild guild : jda.getGuilds())
            array.put(fromGuild(guild, includeGuildUsers, includeChannels, true, true));
        obj.put("guilds", array);
    }

    if (includePrivateChannels) {
        array = new JSONArray();
        for (PrivateChannel chan : jda.getPrivateChannels())
            array.put(fromPrivateChannel(chan, false));
        obj.put("private_channels", array);

        array = new JSONArray();
        for (Map.Entry<String, String> entry : jda.getOffline_pms().entrySet()) {
            array.put(new JSONObject().put("id", entry.getValue()).put("user_id", entry.getKey()));
        }
        obj.put("offline_private_channels", array);
    }

    if (includeUsers) {
        array = new JSONArray();
        for (User user : jda.getUsers())
            array.put(fromUser(user));
        obj.put("users", array);
    }

    return obj;
}

---

From source file:com.cn.util.Reflections.java

/**
 * ?, private/protected, ??getter./*from   w  w w  .j  a  v a 2  s .co m*/
 */
public static Object getFieldValue(final Object obj, final String fieldName) {
    Field field = getAccessibleField(obj, fieldName);

    if (field == null) {
        throw new IllegalArgumentException("Could not find field [" + fieldName + "] on target [" + obj + "]");
    }

    Object result = null;
    try {
        result = field.get(obj);
    } catch (IllegalAccessException e) {
    }
    return result;
}

---

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