Collection prob

[Debajit Paul]

add operation is not supported why in case of a List converted from an array?

[Campbell Ritchie]

Presumably the idea is to maintain a List which mimics the array. You can probably set elements, but can't add them.

Have you read the API documentation for java.util.Arrays#asList? It says changes "write through," so you would overflow the size of the array.

[Debajit Paul]

when we convert list to an array....we can perform add operation on the list and it can overflow the size of the array but in case of array to list why can't we perform add operation on the list?

[Campbell Ritchie]

Back to the API: It says it creates a new array. Separate objects. At least that is how I read it.