serialization allows access to non-transient private members of a class that are not otherwise accessible. Classes containing sensitive information (for example, a password) should not be serializable nor externalizable. The standard encoding method uses a recursive graph-based translation of the object's class descriptor and serializable fields into a byte stream. Primitives as well as non-transient, non-static referenced objects are encoded into the stream. Each object that is referenced by the serialized object via a field that is not marked as transient must also be serialized; and if any object in the complete graph of non-transient object references is not serializable, then serialization will fail. The developer can influence this behavior by marking objects as transient, or by redefining the serialization for an object so that some portion of the reference graph is truncated and not serialized. Java does not use constructor to serialize objects. It is possible to serialize Java objects through JDBC and store them into a database. While Swing components do implement the Serializable interface, they are not guaranteed to be portable between different versions of the Java Virtual Machine. As such, a Swing component, or any component which inherits it, may be serialized to a byte stream, but it is not guaranteed that this will be re-constitutable on another machine. JavaScript Since ECMAScript 5.1, JavaScript has included the built-in JSON object and its methods JSON.parse() and JSON.stringify(). Although JSON is originally based on a subset of JavaScript, there are boundary cases where JSON is not valid JavaScript. Specifically, JSON allows the Unicode line terminators and to appear unescaped in quoted strings, while ECMAScript 2018 and older does not. See the main article on JSON. Julia Julia implements serialization through the serialize() / deserialize() modules, intended to work within the same version of Julia, and/or instance of the same system image. The HDF5.jl package offers a more stable alternative, using a documented format and common library with wrappers for different languages, while the default serialization format is suggested to have been designed rather with maximal performance for network communication in mind. Lisp Generally a Lisp data structure can be serialized with the functions "read" and "print". A variable foo containing, for example, a list of arrays would be printed by (print foo). Similarly an object can be read from a stream named s by (read s). These two parts of the Lisp implementation are called the Printer and