Java implementations of the Prototype Pattern


Java implementations of the Prototype Pattern



What implementations of the Prototype Pattern exist on the Java platform?

A prototype pattern is a creational design pattern used in software development when the type of objects to create is determined by a prototypical instance, which is cloned to produce new objects.

Prototype based programming:

Prototype-based programming is a style of object-oriented programming in which classes are not present, and behavior reuse (known as inheritance in class-based languages) is performed via a process of cloning existing objects that serve as prototypes.

The implementation should be aware that some Java objects are mutable, and some are immutable (see Mutable vs Immutable objects).




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Java defines the Cloneable interface, described here at JGuru.
Java provides a simple interface named Cloneable that provides an implementation of the Prototype pattern.

If you have an object that is Cloneable, you can call its clone() method to create a new instance of the object with the same values..
Warning: see Cloneable is broken.



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