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(Object service, String name, Object obj)
set Field 
Field f = service.getClass().getDeclaredField(name);
f.setAccessible(true);
try {
    f.set(service, obj);
} catch (Exception e) {
    e.printStackTrace();
voidsetField(Object source, String fieldName, Object value)
set Field 
Class cl = source.getClass();
Field f = cl.getDeclaredField(fieldName);
f.setAccessible(true);
f.set(source, value);
voidsetField(Object sourceObj, Object targetObj, Field valueField, List targetFields)
set Field 
valueField.setAccessible(true);
for (Field target : targetFields) {
    if (target.getName().equals(valueField.getName())) {
        target.setAccessible(true);
        try {
            target.set(targetObj, valueField.get(sourceObj));
        } catch (IllegalAccessException e) {
            e.printStackTrace();
...
voidsetField(Object target, Field field, Object value)
Set target Object field to a certain value 
try {
    field.set(target, value);
} catch (IllegalAccessException e) {
    throw new IllegalArgumentException("Field " + field + " could not be set", e);
voidsetField(Object target, Field field, Object value)
set Field 
try {
    field.setAccessible(true);
    field.set(target, value);
} catch (IllegalAccessException ex) {
    throw new RuntimeException(
            "Unable to set field '" + field.getName() + "' for class " + target.getClass().getName(), ex);
} catch (IllegalArgumentException ex) {
    throw new RuntimeException(
...
voidsetField(Object target, String fieldName, Class fieldType, T value)
set Field 
Field field = findField(target.getClass(), fieldName, fieldType);
if (field == null) {
    throw new RuntimeException("unknown given field '" + fieldName + "'");
makeAccessible(field);
try {
    field.set(target, value);
} catch (IllegalArgumentException e) {
...
voidsetField(Object target, String fieldname, Object value)
Try to directly set a (possibly private) field on an Object. 
Field field = findDeclaredField(target.getClass(), fieldname);
field.setAccessible(true);
field.set(target, value);
voidsetField(Object target, String name, Object value)
Set the java.lang.reflect.Field field with the given name on the provided Object target object to the supplied value. 
try {
    Field field = findField(target.getClass(), name);
    if (field == null) {
        throw new IllegalArgumentException(
                "Could not find field [" + name + "] on target [" + target + "]");
    field.setAccessible(true);
    field.set(target, value);
...
booleansetField(Object target, String name, Object value)
Set the field identified by name to the given value. 
try {
    Field field = target.getClass().getDeclaredField(name);
    field.setAccessible(true);
    field.set(target, value);
    return true;
} catch (NoSuchFieldException e) {
    return false;
} catch (Exception e) {
...
voidsetField(Object target, String name, Object value)
set Field 
Class<?> theClass = null;
if (target == null)
    throw new RuntimeException("no target object or class in setField(...)");
if (target instanceof Class<?>) {
    theClass = (Class<?>) target;
} else {
    theClass = target.getClass();
Field theField = null;
while (theClass != null) {
    try {
        theField = theClass.getDeclaredField(name);
        break;
    } catch (NoSuchFieldException e) {
        theClass = theClass.getSuperclass();
if (theField == null) {
    throw new RuntimeException(
            "Didn't find the field " + name + " on " + target.toString() + " or any of its superclasses.");
try {
    theField.setAccessible(true);
    theField.set(target, value);
} catch (SecurityException e) {
    throw new RuntimeException(e);
} catch (IllegalArgumentException e) {
    throw new RuntimeException(e);
} catch (IllegalAccessException e) {
    throw new RuntimeException(e);