Array in java use of length command

//by using assignment statement for integer
// use of length command
class ex_1
{
    public static void main(String[]args)
    {
        int i,sum;
        sum=0;
        int m[]={2,3,4,5,6}; //0 index 2  1 index 3  2 index 4
        int l=m.length;
        for(i=0;i<5;i++)
        sum+=m[i];  //sum=2+3+4
        System.out.println("Length of the array: "+l);
        System.out.println("the sum of the array elements ="+sum);
    }
}

output

Length of the array: 5
the sum of the array elements =20