数组和索引超出范围异常

public class Main{
/**
 * NowJava.com - 时代Java 提 供 
**/

    public static void main(String[] args) {

        int[] v = {0, 1, 2, 3, 4, 5, 6, 7, 8};

        long l = v.length;

        System.out.println("Size of array v:" + l);

        System.out.println(v[4]);

        System.out.println(v[12]);

    }

}