Is it possible to return a locally initialized array if not, how can I do this?

Question

Take this example:

public class foo
{
    public int[] func()
    {
        int arr[] = new int[3];
        // here initialised the array

        return arr;
    }
}

I am not familiar with Java, but I know a little C / C ++.

Answer 1

Yes, this is completely normal, because garbage collection is performed when there is no further reference to the object. You can also find the size of the array using the lengthinside ( arr.length) or outside (e.g. aFoo.func().length) method.

Answer 2

Yes, everything should be fine. Because Java arrays are allocated on the heap not on the stack. They will not be collected after calling the function.

Answer 3

Java, ++.

++, [] , ; Java , , .

Answer 4

It is fine to return a local array, but you must confirm the returned data in the rest of your program so that it continues to serve its purpose.

Relate data to something new.

Answer 5

This is normal in the C # world.

You can also do this: return new int[] {1,2,3,4};