Array Length in Java

March 13, 2021 by Code Error

I declared an array as shown below:

int[] arr = new int[10];

Then I assigned following values to the array:

arr[0] = 1;
arr[1] = 2;
arr[2] = 3;
arr[3] = 4;

Then I declared and initialized an integer variable:

int arrayLength = arr.length;

This will be useful to find actual size but is there any method to find logical size of the array?

Solution

It contains the allocated size, 10. The unassigned indexes will contain the default value which is 0 for int.

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