Object Cloning:

Cloning means to create exact copy of an existing object. To clone a object we have to implement  java.lang.Cloneable interface by that class whose object will be cloned. clone() method is defined in Object class.

Example:

    class ObjClone implements Cloneable{  
    int rollno;  
    String name;  
      
    ObjClone(int rollno,String name){  
    this.rollno=rollno;  
    this.name=name;  
    }  
      
    public Object clone()throws CloneNotSupportedException{  
    return super.clone();  
    }  
      
    public static void main(String args[]){  
    try{  
    ObjClone s1=new ObjClone(101,"sam");  
      
    ObjClone s2=(ObjClone)s1.clone();  // cloning s1 object
      
    System.out.println(s1.rollno+" "+s1.name);  
    System.out.println(s2.rollno+" "+s2.name);  
      
    }catch(CloneNotSupportedException c){}  
      
    }  
    }  

Output:101 sam
       101 sam

In the above  example we are cloning the object of class ObjClone by using clone() method of Cloneable interface.