Difference between traditional java Array and Arraylist class
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Difference between traditional java Array and Arraylist class.| Array | Arraylist class | | It is a fixed length structure and once its created its size cannot be changed. | It is a variable length collection class and can resize itself depending on its capacity and load factor. | | It cannot use generics as the array instance knows its type and can throw an ArrayStoreException if the array is not convertible. | It allows to use generics to ensure the type-safety. | | It provides length variable to denote the length of an array. | It provides the size() method to calculate the size of the ArrayList. | | It contains both the primitives and the objects. | It cannot store the primitives but it can store the objects. | | Assignment operator is used to store elements in an array. | Add() method is used to store elements in the ArrayList. | | It is mandatory to provide the size of the array while creating it. | An instance can be created without specifying the size. |
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Define Savepoints in a transactionDefine Savepoints in a transaction - Using Savepoint, you can mark one or more places in a transaction and you can perform rollback to one of those...
