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What is mean by ArrayList?

Posted By :Narayanan     Posted Date :September 04, 2011    Points :40   Category :.NET Framework 
A Simple Collection that can store type of object.it instances expand to any required capacity

You can also find related Interview Question to What is mean by ArrayList?  below: 

What is the difference between arraylist and array classes ?

  
arraylist size can be dynamically increased where as array size can't be increased. (More...)

What are the similarities between an array and an ArrayList?

  
The following are the similarities between an array and an ArrayList:

- Both array and ArrayList can have duplicate elements in them.
- Both are unordered lists.
- Both uses index to refer to their elements.
- Both supports null values (More...)

What's difference between HashTable and ArrayList ?

  
Array can be accessed using INDEX value. Hashtable provides way of accessing the index using a KEY value, thus removing the INDEX problem. (More...)

Difference between Array and ArrayList?

  
An array can contain only one data type ,where as an Array list can contain any data type in the form of object

Array cannot dynamically increase or decrease its size, where as Array list can (More...)

What is an ArrayList?

  
a collection of items containing a single data type values. (More...)

Is ArrayList is a type safe collection?

  
No, ArrayList is not a type safe collection because it allows you to add a any object. That means if you have one arrayList class object you can add in Integer, string, boolean, double etc value into one ArrayList class object.

for eg

ArrayList arr = new ArrayList();
arr("One");
arr.Add(1);
arr.Add(true); (More...)

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