Default size of Vector and Arraylist

[ram gaurav]

Hi

Like when we create ArrayList and Vector :

ArrayList a = new ArrayList();
Vector v = new Vector();

I have to ask that whats there by default initial capacity and load factor and at what stage they grow dynamically.

Thanks
Regards
Gaurav

[tanu dua]

The default capacity of a vector is 10 and after that it grows dynamically , about the capacity increment , question left to other ranchiies.

[ram gaurav]

Thanks for your reply , what about ArrayList , whats it default size.

I also want to know that at what point they decide to grow themself.

Thanks
Gaurav

[Sujittt Tripathyrr]

The below is the constructor of ArrayList and the default size of ArrayList is 10.

/**
* Constructs an empty list with an initial capacity of ten.
*/
public ArrayList() {
this(10);
}

[Ajit Amitav Das]

Both ArrayList and Vector has default size of 10
unless u specify size in constructor while constructing them.
When you will add an element to an ArrayList or Vector then it will check wheather it's size is equal to it's capacity , and if it is then it will allocate 10 more spaces for elements if nothing is specified while constructing them, am not sure how much more spaces it will allocate if we will give size in constructor.

[ram gaurav]

Thanks to you all