Array Length in Java

Question

I declared an array as shown below:

int[] arr = new int[10];

Then I assigned following values to the array:

arr[0] = 1;
arr         


        

Answer 1

Java arrays are actually fixed in size, and the other answers explain how .length isn't really doing what you'd expect. I'd just like to add that given your question what you might want to be using is an ArrayList, that is an array that can grow and shrink:

https://docs.oracle.com/javase/8/docs/api/java/util/ArrayList.html

Here the .size() method will show you the number of elements in your list, and you can grow this as you add things.