Web Reference: May 19, 2014 · Difference between Array and ArrayList are following: Implementation of array is simple fixed sized array but Implementation of ArrayList is dynamic sized array. Array can contain both primitives and objects but ArrayList can contain only object elements You can’t use generics along with array but ArrayList allows us to use generics to ensure type safety. You can use *length *variable to ... Closed 10 years ago. I am wondering what the exact difference is between a Array, ArrayList and a List (as they all have similar concepts) and where you would use one over the other. Example: Array For the Array we can only add types that we declare for this example an int. What is the difference between List list1 = new ArrayList(Arrays.asList(ia)); // Copy List list2 = Arrays.asList(ia); , where ia is an array of integers? I came to know that some operations are not allowed in list2. Why is it so? How is it stored in memory (references / copy)? When I shuffle the lists, list1 doesn't affect the original array, but list2 does. But ...
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