Many developer are concerned about the performance difference between java.util.Array.sort() java.util.Collections.sort() methods. Which one is faster? Which one to use and when?
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Well, both methods have same algorithm the only difference is type of input to them.
Collections.sort() has a input as List so it does a translation of List to array and vice versa which is an additional step while sorting.
So this should be used when you are trying to sort a list.
Arrays.sort is for arrays so the sorting is done directly on the array.
So clearly it should be used when you have a array available with you and you want to sort it.