// This is an example to demonstrate the working of the un-parameterized vector

// This takes object as input and as object is super most class in java this will accept all type of inputs

// but while retrieving it will return objects only

public static void main(String[] args) {

Vector vtr = new Vector(5); // created an un-parameterized vector

vtr.add(10.0); // Although 10 is an integer but it will go in vector as object

vtr.add(20.0);

vtr.add(30.0);

// if we add integers here to vectors then later on we will hav to caste it to Integer only

// Casting it to double gives exception

double sum = 0;

// We are trying to add all the elements that are there in vector

for(int i = 0; i<vtr.size(); i++){

sum=sum+(Double) vtr.get(i); // Here it returns the object which can't be added to double type sum

// So we have type casted it to Double

}

System.out.println(sum); // Output is 60

}