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(Class clazz, Object instance, String fieldName, Object value)
set Field 
try {
    Field field = clazz.getDeclaredField(fieldName);
    boolean accessible = field.isAccessible();
    field.setAccessible(true);
    field.set(instance, value);
    field.setAccessible(accessible);
} catch (NoSuchFieldException e) {
    throw new IllegalArgumentException(
...
voidsetField(Class clazz, Object src, String fieldName, Object value)
set Field 
Field field = clazz.getDeclaredField(fieldName);
field.setAccessible(true);
Field modifiersField = Field.class.getDeclaredField("modifiers");
modifiersField.setAccessible(true);
modifiersField.setInt(field, field.getModifiers() & ~Modifier.FINAL);
field.set(src, value);
voidsetField(Class clazz, String name, Object value)
Assigns a value to a field of a given class. 
setField(clazz, null, name, value);
voidsetField(Class cls, Object obj, String fieldName, Object value)
set Field 
Field field = cls.getDeclaredField(fieldName);
field.setAccessible(true);
field.set(obj, value);
voidsetField(Class type, String name, Object instance, Object value)
set Field 
Field field = type.getDeclaredField(name);
field.setAccessible(true);
field.set(instance, value);
voidsetField(Class klazz, Object recipient, String fieldName, Object newValue)
set Field 
Field[] fields = klazz.getDeclaredFields();
for (int i = 0; i < fields.length; i++) {
    if (fields[i].getName().equals(fieldName)) {
        fields[i].setAccessible(true);
        try {
            fields[i].set(recipient, newValue);
        } catch (IllegalArgumentException e) {
            throw new RuntimeException("Couldn't set field.", e);
...
voidsetField(Class clazz, String fieldName, T instance, Object value)
Sets the field of the given class. 
try {
    Field field = clazz.getDeclaredField(fieldName);
    field.setAccessible(true);
    field.set(instance, value);
} catch (NoSuchFieldException | IllegalAccessException e) {
    throw new IllegalStateException("Could not set field '" + fieldName + "' on " + instance, e);
voidsetField(Class c, Object inst, String name, Object value)
changes a field in a class by using reflection 
if (c == null)
    c = inst.getClass();
try {
    Field field = null;
    while (field == null) {
        try {
            field = c.getDeclaredField(name);
        } catch (NoSuchFieldException e) {
...
voidsetField(Class cl, String name, Object obj, Object value)
set Field 
Field field = cl.getDeclaredField(name);
field.setAccessible(true);
field.set(obj, value);
voidsetField(Class clazz, Object instance, String field, Object value)
set Field 
Field f = clazz.getDeclaredField(field);
f.setAccessible(true);
f.set(instance, value);