Which JDK doc to read up for more info on array ?

Question

The title says it all. I need to know what other properties does an array has. For instance, we can use "x_array.length" to find out no.of elements in x_array. Is there a property to tell how many dimension does the array has ? The ".length" only gives size of one dimension. To find the size of another dimension, I need to do something as below :-
int two_D_array[][] = new int[20][30];
out.printf("1) two_D_array size %d\n", two_D_array.length);
out.printf("2) two_D_array size %d\n", two_D_array[0].length);
Output :
1) two_D_array size 20
2) two_D_array size 30
Is there any better way to improve the above codes ? Thank you.

Answer 1

TKH wrote:
The title says it all. I need to know what other properties does an array has. That's easy. There are none ;)
Is there a property to tell how many dimension does the array has ? The ".length" only gives size of one dimension. To find the size of another dimension, I need to do something as below :-
Nope, you can't know. Or rather you have to know when declaring the array so there's no way to change it on the fly.
As a result there's no need to know...
Something like
int[] arr = getIntArr();
private int[] getIntArr() {
    return new int[1][2][3][4][5] {};
}won't even compile.