public static Field makeAccessible(Class<?> target, String fieldName) {
try {
final Field field = target.getDeclaredField(fieldName);
return (Field)
AccessController.doPrivileged(
new PrivilegedExceptionAction<Object>() {
public Object run() throws IllegalAccessException, InvocationTargetException {
if (!field.isAccessible()) field.setAccessible(true);
return field;
}
});
} catch (NoSuchFieldException | PrivilegedActionException e) {
System.out.print("");
} // keep quiet IError.printStackTrace(e); }
return null;
}
/** Invoke a method on an object using reflection. */
public static Object invoke(final Object target, final Method method, final Object... args) {
try {
return AccessController.doPrivileged(
new PrivilegedExceptionAction<Object>() {
public Object run() throws IllegalAccessException, InvocationTargetException {
if (!method.isAccessible())
method.setAccessible(
true); // Say please - else invoke() will fail if method is protected
return method.invoke(target, args);
}
});
} catch (PrivilegedActionException e) {
e.printStackTrace();
}
return null;
}