Explain the working mechanism of the clone method in Java programming language.

The clone() method in Java is used to create a copy of an object. It is defined in the Object class and returns a shallow copy of the current object.

To use clone(), a class must:

• implement the Cloneable interface, otherwise a CloneNotSupportedException will be thrown when calling clone().
• override the clone() method, usually by calling super.clone().

Example:

public class Person implements Cloneable {
    private String name;

    public Person(String name) {
        this.name = name;
    }

    @Override
    protected Object clone() throws CloneNotSupportedException {
        return super.clone();
    }
}

It is important to understand that clone() creates a shallow copy: if the object contains references to other objects, only the references are copied, not the nested objects themselves. For deep copying, additional logic needs to be implemented.