In Java, one can create instances of a class without actually calling a declared constructor by retrieving one via sun.reflect.ReflectionFactor.newConstructorForSerialization().
As far as I know, this special constructor is called "munged". Where does this term come from? I could not find it in any dictionary.
I believe it's used as in the following sense, because you are somehow bypassing/faking the normal object creation cycle, by skipping the constructor:
(computing) modify or fake an email (or other internet) address so it cannot be automatically harvested, esp. to avoid spam bots
(computing) change a file; make irrevocable changes, destroy, obfuscate
Both definitions are from Princeton's WordNet.
From the wiktionary:
The constructor for deserialisation does not [necessarily] call the super class constructor and is not part of the original class. From a JVM spec perspective, it is illegal - a munged version of a legal constructor.
Additionally, classes from the package sun.* should not be used directly as they may not be available on other JDK implementations (so this "constructor" may be undefined with another JDK).