Array Class

Question

Array class is a abstract class so we can not create object for abstract classes so how we create array can you explain the internal process

Piotr Justyna · Answer

You can create an instance of a class implementing the Array class simply my executing one of Array's methods: Array sampleArray = Array.CreateInstance(Type.GetType(String) 2); This will create an instance of an one-dimensional array which can contain 2 elements of type 'String'. This is 100% correct but it's a lot easier to use this array: String[] sampleArray1 = new String[2]; String[] sampleArray2 = new String[] { String 1 String 2 }; In the first case you create an array with uninitialized elements (both are null) and in the second case sampleArray2 has 2 initialized elements (String 1 and String 2). I hope this will help you. Cheers!

Piotr Justyna · Answer

Hi! There's no possibility of creating abstract class object. The only thing you can do is to implement that abstract class and then instanciate the implementing class (of course making sure that the implementing class is not abstract too :) ) Please mark my answer as helpful if you like it. Cheers!

srinivas · Answer

Thank you for your answer but how we can create an object for a abstract class

theLizard · Answer

Adding to Piort Justyna 's reply if you want to resize the array eg int[] j = new int[0]; //zero elements --> Array.Resize(ref j j.Length +1); //increase size of array by one (1) This is most useful in while or for loops. eg. int i = 0; while(i != recordCount){ Array.Resize(ref j j.Length +1); j[i]= i; i++; }