What is the purpose of object cloning in Java?

What is the purpose of protected object clone throws CloneNotSupportedException?

Class CloneNotSupportedException

Thrown to indicate that the clone method in class Object has been called to clone an object, but that the object’s class does not implement the Cloneable interface.

What do you understand by object cloning and how do you achieve it in Java?

Object cloning in Java is the process of creating an exact copy of the original object. In other words, it is a way of creating a new object by copying all the data and attributes from the original object. This is only possible by implementing clone() method of the java.

What is clone () method in Java?

clone() method in Java

Java provides an assignment operator to copy the values but no operator to copy the object. Object class has a clone method which can be used to copy the values of an object without any side-effect. … This means if we change the value in one object then same will reflect in another object as well.

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Why clone method is protected?

clone is protected because it is something that ought to be overridden so that it is specific to the current class. While it would be possible to create a public clone method that would clone any object at all this would not be as good as a method written specifically for the class that needs it.

Why do we need object cloning?

The object cloning is a way to create an exact copy of an object. … The clone() method saves the extra processing task for creating the exact copy of an object. If we perform it by using the new keyword, it will take a lot of processing to be performed, so we can use object cloning.

Can any Java object be cloned?

Yes, you are just making a reference to the object. You can clone the object if it implements Cloneable . Check out this wiki article about copying objects. Deep Cloning is your answer, which requires implementing the Cloneable interface and overriding the clone() method.

What is object cloning explain with example?

Object cloning refers to the creation of an exact copy of an object. … In Java, there is no operator to create a copy of an object. Unlike C++, in Java, if we use the assignment operator then it will create a copy of the reference variable and not the object. This can be explained by taking an example.

What are the types of cloning?

There are three different types of cloning:

  • Gene cloning, which creates copies of genes or segments of DNA.
  • Reproductive cloning, which creates copies of whole animals.
  • Therapeutic cloning, which creates embryonic stem cells.
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Is equal method in Java?

Java String equals() Method

The equals() method compares two strings, and returns true if the strings are equal, and false if not. Tip: Use the compareTo() method to compare two strings lexicographically.

Can we override clone method in Java?

Every language which supports cloning of objects has its own rules and so does java. In java, if a class needs to support cloning it has to do following things: You must implement Cloneable interface. You must override clone() method from Object class.

Can we see clone method without overriding in any class?

Having said that, you should not override clone method, as it is broken . Because, for a class to be cloned, you need to implement the Cloneable interface. And then your class uses the clone method of Object class instead.

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