Question
What is difference between Arrays and ArrayList
Answers
• Arrays are created of fix size whereas ArrayList is dynamic in nature and can vary its length. Also the size of array cannot be incremented or decremented. But with arrayList the size is variable.

• Once the array is created elements cannot be added or deleted from it. But with ArrayList the elements can be added and deleted at runtime.

List list = new ArrayList();
list.add(1);
list.add(3);
list.remove(0) // will remove the element from the 1st location.

• ArrayList is one dimensional but array can be multidimensional.

int[][][] intArray= new int[3][2][1]; // 3 dimensional array

• Array can contain objects of a single data type or class. ArrayList if not used with generic can contain objects of different classes   Your Comment




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