How to initialize an array in Java?

Question

I am initializing an array like this:

public class Array {

    int data[] = new int[10]; 
    /** Creates a new instance of Array */
    public Array() {
           


        

Answer 1

When you create an array of size 10 it allocated 10 slots but from 0 to 9. This for loop might help you see that a little better.

public class Array {
    int[] data = new int[10]; 
    /** Creates a new instance of an int Array */
    public Array() {
        for(int i = 0; i < data.length; i++) {
            data[i] = i*10;
        }
    }
}