Java Utililty Methods Reflection Field Set

List of utility methods to do Reflection Field Set

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Description

The list of methods to do Reflection Field Set are organized into topic(s).

Method

voidsetField(Field field, U instance, Object value)
set Field 
boolean isAccessible = field.isAccessible();
if (!isAccessible) {
    field.setAccessible(true);
try {
    field.set(instance, value);
} finally {
    field.setAccessible(isAccessible);
...
voidsetField(final Field field, final Object instance, final Object value)
set Field 
if (field == null) {
    throw new RuntimeException("No such field");
field.setAccessible(true);
try {
    field.set(instance, value);
} catch (final Exception ex) {
    throw new RuntimeException(ex);
...
voidsetField(final Field field, final Object object, final Object value)
Sets the supplied value of the supplied field on the supplied object. 
try {
    field.set(object, value);
} catch (IllegalAccessException e) {
    throw new IllegalArgumentException(e);
VsetField(final O object, final String fieldName, final V value)
Sets a field on an object, even if the field would not normally be accessible (such as a private field). 
Field objectField = null;
Class<?> workingClass = object.getClass();
while (objectField == null) {
    try {
        objectField = workingClass.getDeclaredField(fieldName);
    } catch (final NoSuchFieldException e) {
        if (workingClass == Object.class) {
            throw e;
...
voidsetField(final Object instance, final String fieldName, final T value)
set Field 
Class<?> instanceClass = instance.getClass();
Field field = getDeclaredField(instanceClass, fieldName);
while (field == null) {
    instanceClass = instanceClass.getSuperclass();
    field = getDeclaredField(instanceClass, fieldName);
field.setAccessible(true);
try {
...
voidsetField(final Object obj, final String fieldName, final int value)
set Field 
try {
    final Field field = obj.getClass().getField(fieldName);
    field.set(obj, new Integer(value));
} catch (final Throwable t) {
voidsetField(final Object obj, final String fieldName, final Object value)
set Field 
Field field = null;
try {
    field = obj.getClass().getDeclaredField(fieldName);
} catch (NoSuchFieldException ex) {
    throw new IllegalArgumentException(
            "Unexpected reflection exception - " + ex.getClass().getName() + ": " + ex.getMessage());
field.setAccessible(true);
...
voidsetField(final Object obj, final String name, final Object value)
Set a (final) field during deserialization. 
try {
    final Field field = obj.getClass().getDeclaredField(name);
    if (field == null) {
        throw new IOException("Field " + name + " not found in class " + obj.getClass());
    field.setAccessible(true);
    field.set(obj, value);
} catch (final SecurityException e) {
...
voidsetField(final Object obj, final String variableName, final Object variableValue)
Sets variable by reflection down to 3 levels of abstracts classes. 
Field declaredField = null;
Class<?> clazz = obj.getClass();
for (int i = 0; i <= 3; i++) {
    try {
        declaredField = clazz.getDeclaredField(variableName);
        break;
    } catch (NoSuchFieldException e) {
        clazz = clazz.getSuperclass();
...
voidsetField(final Object object, final String name, final Object value)
set Field 
try {
    final Field field = findField(object.getClass(), name);
    field.setAccessible(true);
    field.set(object, value);
} catch (ReflectiveOperationException e) {
    throw new IllegalStateException(e);