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.
Can we override private methods in Java?
1) In Java, inner Class is allowed to access private data members of outer class. 2) In Java, methods declared as private can never be overridden, they are in-fact bounded during compile time.
How do you stop a clone in Java?
Prevent Singleton Pattern From Cloning To overcome the above issue, we need to implement/override the clone() method and throw an exception CloneNotSupportedException from the clone method. If anyone tries to create a clone object of Singleton , it will throw an exception, as shown in the below code.
How can we create object using clone method in Java?
Example of clone() method (Object cloning)
- class Student18 implements Cloneable{
- int rollno;
- String name;
- Student18(int rollno,String name){
- this.rollno=rollno;
- this.name=name;
- }
- public Object clone()throws CloneNotSupportedException{
How to properly override clone method in Java?
(Either Josh Bloch or Neal Gafter) As you have noticed and others mentioned, CloneNotSupportedException has almost no chance to be thrown if you declared that you implement the Cloneable interface. Also, there is no need for you to override the method if you don’t do anything new in the overridden method.
Can a class be cloned without the clone method?
The class being cloned does not implemented Cloneable (assuming that the actual cloning eventually defers to Object ‘s clone method). If the class you are writing this method in implements Cloneable, this will never happen (since any sub-classes will inherit it appropriately).
When do you need to override a method in Java?
Also, there is no need for you to override the method if you don’t do anything new in the overridden method. You only need to override it when you need to do extra operations on the object or you need to make it public. Ultimately, it is still best to avoid it and do it using some other way.
Is it possible to create a deep clone in Java?
Just because java’s implementation of Cloneable is broken it doesn’t mean you can’t create one of your own. If OP real purpose was to create a deep clone, i think that it is possible to create an interface like this: In this way you can easely deep clone an object of class BClass without need for @SuppressWarnings or other gimmicky code.