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clone() is a method in the Java programming language for object duplication. In Java, objects are manipulated through reference variables, and there is no operator for copying an object—the assignment operator duplicates the reference, not the object. The clone() method provides this missing functionality.
In Java, the Object class contains the clone() method, which copies the object and returns a reference to that copied object. Since it is in the Object class, all classes defined in Java will have a clone method available to the programmer (although to function correctly it needs to be overridden at each level it is used). Cloning an object in ...
Another way to copy objects in Java is to serialize them through the Serializable interface. This is typically used for persistence and wire protocol purposes, but it does create copies of objects and, unlike clone, a deep copy that gracefully handles cycled graphs of objects is readily available with minimal effort from a programmer.
Clone (Java method), a method in the Java programming language for object duplication Clone (Linux system call) , in C, whereby a process creates a copy of itself Clone, a popular term for a replica , particularly when referring to "recreations" of rare and desirable variants of collector cars
The client, instead of writing code that invokes the "new" operator on a hard-coded class name, calls the clone() method on the prototype, calls a factory method with a parameter designating the particular concrete derived class desired, or invokes the clone() method through some mechanism provided by another design pattern.
A minimum requirement is usually applied to the quantity of code that must appear in a sequence for it to be considered duplicate rather than coincidentally similar. Sequences of duplicate code are sometimes known as code clones or just clones, the automated process of finding duplications in source code is called clone detection.
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In the above example, clone() can be any member documented in the Javadoc that isn't a class or interface, so {{Javadoc: SE | java/lang | System | out}} produces System.out.For a class or interface member, the class name is OuterClass.InnerClass, so {{Javadoc: SE | java/lang | Character.Subset}} produces Character.Subset.