to find size of array

public class SizeOfArray {
public static void main (String args []) {

int num[] = {1, 2, 3, 4, 5, 6, 7, 8, 9};
String days[] = {"Sunday","Monday","Tuesday", "Wednesday",
"Thursday","Friday","Saturday"};
System.out.println("size of num[]: " + num.length);
System.out.println("size of days[]: " + days.length);
}
}