List of usage examples for java.lang.reflect Field getInt
@CallerSensitive @ForceInline public int getInt(Object obj) throws IllegalArgumentException, IllegalAccessException
From source file:com.gmail.boiledorange73.ut.map.MapActivityBase.java
private void initActionBar() { Class<?> windowClass = Window.class; try {// www. j a va2 s. c o m Field field = windowClass.getField("FEATURE_ACTION_BAR"); int fieldValue = field.getInt(null); this.getWindow().requestFeature(fieldValue); } catch (NoSuchFieldException e) { // DOES NOTHING } catch (IllegalArgumentException e) { e.printStackTrace(); } catch (IllegalAccessException e) { e.printStackTrace(); } }
From source file:org.rhq.enterprise.gui.legacy.taglib.ConstantsTag.java
public int doEndTag() throws JspException { try {/*from w w w.ja v a 2 s. c om*/ JspWriter out = pageContext.getOut(); if (className == null) { className = pageContext.getServletContext().getInitParameter(constantsClassNameParam); } if (validate(out)) { // we're misconfigured. getting this far // is a matter of what our failure mode is; // if we haven't thrown an Error, carry on log.debug("constants tag misconfigured"); return EVAL_PAGE; } Map<String, String> fieldMap; if (constants.containsKey(className)) { // we cache the result of the constant's class // reflection field walk as a map fieldMap = (Map<String, String>) constants.get(className); } else { fieldMap = new HashMap<String, String>(); Class typeClass = Class.forName(className); if (typeClass.isEnum()) { for (Object enumConstantObj : typeClass.getEnumConstants()) { Enum enumConstant = (Enum) enumConstantObj; // Set name *and* value to enum name (e.g. name of ResourceCategory.PLATFORM = "PLATFORM") // NOTE: We do not set the value to enumConstant.ordinal(), because there is no way to // convert the ordinal value back to an Enum (i.e. no Enum.valueOf(int ordinal) method). fieldMap.put(enumConstant.name(), enumConstant.name()); } } else { Object instance = typeClass.newInstance(); Field[] fields = typeClass.getFields(); for (Field field : fields) { // string comparisons of class names should be cheaper // than reflective Class comparisons, the asumption here // is that most constants are Strings, ints and booleans // but a minimal effort is made to accomadate all types // and represent them as String's for our tag's output String fieldType = field.getType().getName(); String strVal; if (fieldType.equals("java.lang.String")) { strVal = (String) field.get(instance); } else if (fieldType.equals("int")) { strVal = Integer.toString(field.getInt(instance)); } else if (fieldType.equals("boolean")) { strVal = Boolean.toString(field.getBoolean(instance)); } else if (fieldType.equals("char")) { strVal = Character.toString(field.getChar(instance)); } else if (fieldType.equals("double")) { strVal = Double.toString(field.getDouble(instance)); } else if (fieldType.equals("float")) { strVal = Float.toString(field.getFloat(instance)); } else if (fieldType.equals("long")) { strVal = Long.toString(field.getLong(instance)); } else if (fieldType.equals("short")) { strVal = Short.toString(field.getShort(instance)); } else if (fieldType.equals("byte")) { strVal = Byte.toString(field.getByte(instance)); } else { strVal = field.get(instance).toString(); } fieldMap.put(field.getName(), strVal); } } // cache the result constants.put(className, fieldMap); } if ((symbol != null) && !fieldMap.containsKey(symbol)) { // tell the developer that he's being a dummy and what // might be done to remedy the situation // TODO: what happens if the constants change? // do we need to throw a JspException, here? - mtk String err1 = symbol + " was not found in " + className + "\n"; String err2 = err1 + "use <constants:diag classname=\"" + className + "\"/>\n" + "to figure out what you're looking for"; log.error(err2); die(out, err1); } if (varSpecified) { doSet(fieldMap); } else { doOutput(fieldMap, out); } } catch (JspException e) { throw e; } catch (Exception e) { log.debug("doEndTag() failed: ", e); throw new JspException("Could not access constants tag", e); } return EVAL_PAGE; }
From source file:fi.cosky.sdk.API.java
private void addVersionNumberToHeader(Object object, String url, HttpURLConnection connection) { Field f = null; Object fromCache = null;/* w w w .ja va 2 s. co m*/ if (objectCache.containsUri(url)) { try { fromCache = objectCache.getObject(url); f = fromCache.getClass().getDeclaredField("VersionNumber"); } catch (NoSuchFieldException e) { // Object does not have versionnumber. } if (f != null) { f.setAccessible(true); int versionNumber = 0; try { versionNumber = f.getInt(fromCache); } catch (IllegalAccessException e) { } connection.setRequestProperty("If-None-Match", versionNumber + ""); } } }
From source file:com.roselism.bottomsheet.BottomSheet.java
/** * Hacky way to get gridview's column number *//* ww w.j a v a2 s.c o m*/ private int getNumColumns() { try { Field numColumns = GridView.class.getDeclaredField("mRequestedNumColumns"); numColumns.setAccessible(true); return numColumns.getInt(list); } catch (Exception e) { return 1; } }
From source file:com.nonninz.robomodel.RoboModel.java
void saveField(Field field, TypedContentValues cv) { final Class<?> type = field.getType(); final boolean wasAccessible = field.isAccessible(); field.setAccessible(true);//ww w. j ava2s . c o m try { if (type == String.class) { cv.put(field.getName(), (String) field.get(this)); } else if (type == Boolean.TYPE) { cv.put(field.getName(), field.getBoolean(this)); } else if (type == Byte.TYPE) { cv.put(field.getName(), field.getByte(this)); } else if (type == Double.TYPE) { cv.put(field.getName(), field.getDouble(this)); } else if (type == Float.TYPE) { cv.put(field.getName(), field.getFloat(this)); } else if (type == Integer.TYPE) { cv.put(field.getName(), field.getInt(this)); } else if (type == Long.TYPE) { cv.put(field.getName(), field.getLong(this)); } else if (type == Short.TYPE) { cv.put(field.getName(), field.getShort(this)); } else if (type.isEnum()) { final Object value = field.get(this); if (value != null) { final Method method = type.getMethod("name"); final String str = (String) method.invoke(value); cv.put(field.getName(), str); } } else { // Try to JSONify it (db column must be of type text) final String json = mMapper.writeValueAsString(field.get(this)); cv.put(field.getName(), json); } } catch (final IllegalAccessException e) { final String msg = String.format("Field %s is not accessible", type, field.getName()); throw new IllegalArgumentException(msg); } catch (final JsonProcessingException e) { Ln.w(e, "Error while dumping %s of type %s to Json", field.getName(), type); final String msg = String.format("Field %s is not accessible", type, field.getName()); throw new IllegalArgumentException(msg); } catch (final NoSuchMethodException e) { // Should not happen throw new RuntimeException(e); } catch (final InvocationTargetException e) { // Should not happen throw new RuntimeException(e); } finally { field.setAccessible(wasAccessible); } }
From source file:cern.c2mon.shared.common.datatag.address.impl.HardwareAddressImpl.java
@Override public final int hashCode() { int result = 0; Field[] fields = this.getClass().getDeclaredFields(); for (Field field : fields) { // compare non-final, non-static and non-transient fields only if (!Modifier.isFinal(field.getModifiers()) && !Modifier.isStatic(field.getModifiers()) && !Modifier.isTransient(field.getModifiers())) { try { // skip arrays if (!field.getType().isArray() && field.get(this) != null) { // for string take its length if (field.getType().equals(String.class)) { result ^= ((String) field.get(this)).length(); } else if (field.getType().equals(short.class) || field.getType().equals(Short.class)) { result ^= field.getShort(this); } else if (field.getType().equals(int.class) || field.getType().equals(Integer.class)) { result ^= field.getInt(this); } else if (field.getType().equals(float.class) || field.getType().equals(Float.class)) { result ^= (int) field.getFloat(this); } else if (field.getType().equals(double.class) || field.getType().equals(Double.class)) { result ^= (int) field.getDouble(this); } else if (field.getType().equals(long.class) || field.getType().equals(Long.class)) { result ^= (int) field.getLong(this); } else if (field.getType().equals(byte.class) || field.getType().equals(Byte.class)) { result ^= field.getByte(this); } else if (field.getType().equals(boolean.class) || field.getType().equals(Boolean.class)) { result ^= field.getBoolean(this) == Boolean.TRUE ? 1 : 0; }/*from w w w .ja va 2 s .co m*/ } } catch (Exception e) { log.error(e.toString()); throw new RuntimeException("Exception caught while calculating HardwareAddress hashcode.", e); } } } return result; }
From source file:org.apache.ddlutils.PlatformInfo.java
/** * Adds a default size for the given jdbc type. * /*from w w w . j av a2s . c o m*/ * @param jdbcTypeName The name of the jdbc type, one of the {@link Types} constants * @param defaultSize The default size */ public void setDefaultSize(String jdbcTypeName, int defaultSize) { try { Field constant = Types.class.getField(jdbcTypeName); if (constant != null) { setDefaultSize(constant.getInt(null), defaultSize); } } catch (Exception ex) { // ignore -> won't be defined _log.warn("Cannot add default size for undefined jdbc type " + jdbcTypeName, ex); } }
From source file:org.apache.ddlutils.PlatformInfo.java
/** * Adds a mapping from jdbc type to database-native type. Note that this * method accesses the named constant in {@link java.sql.Types} via reflection * and is thus safe to use under JDK 1.2/1.3 even with constants defined * only in later Java versions - for these, the method simply will not add * a mapping.//from w w w . j a v a2s.c o m * * @param jdbcTypeName The jdbc type name, one of the constants defined in * {@link java.sql.Types} * @param nativeType The native type */ public void addNativeTypeMapping(String jdbcTypeName, String nativeType) { try { Field constant = Types.class.getField(jdbcTypeName); if (constant != null) { addNativeTypeMapping(constant.getInt(null), nativeType); } } catch (Exception ex) { // ignore -> won't be defined _log.warn("Cannot add native type mapping for undefined jdbc type " + jdbcTypeName, ex); } }
From source file:cn.edu.zafu.corepage.base.BaseActivity.java
/** * ??/* w w w. jav a 2s .com*/ * * @param outState Bundle */ @Override protected void onSaveInstanceState(Bundle outState) { Field[] fields = this.getClass().getDeclaredFields(); Field.setAccessible(fields, true); Annotation[] ans; for (Field f : fields) { ans = f.getDeclaredAnnotations(); for (Annotation an : ans) { if (an instanceof SaveWithActivity) { try { Object o = f.get(this); if (o == null) { continue; } String fieldName = f.getName(); if (o instanceof Integer) { outState.putInt(fieldName, f.getInt(this)); } else if (o instanceof String) { outState.putString(fieldName, (String) f.get(this)); } else if (o instanceof Long) { outState.putLong(fieldName, f.getLong(this)); } else if (o instanceof Short) { outState.putShort(fieldName, f.getShort(this)); } else if (o instanceof Boolean) { outState.putBoolean(fieldName, f.getBoolean(this)); } else if (o instanceof Byte) { outState.putByte(fieldName, f.getByte(this)); } else if (o instanceof Character) { outState.putChar(fieldName, f.getChar(this)); } else if (o instanceof CharSequence) { outState.putCharSequence(fieldName, (CharSequence) f.get(this)); } else if (o instanceof Float) { outState.putFloat(fieldName, f.getFloat(this)); } else if (o instanceof Double) { outState.putDouble(fieldName, f.getDouble(this)); } else if (o instanceof String[]) { outState.putStringArray(fieldName, (String[]) f.get(this)); } else if (o instanceof Parcelable) { outState.putParcelable(fieldName, (Parcelable) f.get(this)); } else if (o instanceof Serializable) { outState.putSerializable(fieldName, (Serializable) f.get(this)); } else if (o instanceof Bundle) { outState.putBundle(fieldName, (Bundle) f.get(this)); } } catch (IllegalArgumentException e) { e.printStackTrace(); } catch (IllegalAccessException e) { e.printStackTrace(); } } } } super.onSaveInstanceState(outState); }