Example of a for loop:
public class Factorial {
public static void main(String[] args) {
int n = 4; // compute the factorial of n
int fact = 1; // initial value
for(int i = 1; i <= n; i++) {
fact = fact * i;
}
System.out.println("factorial of " + n + " is " + fact);
}
}
Example of arrays:
public class Array1 {
public static void main(String [] args) {
int [] a = new int[5]; // declaring an array
// initializing some elements:
a[0] = 1;
a[1] = 3;
a[2] = 5;
// priniting the array
for (int i = 0; i < a.length; i++) {
System.out.println("a[" + i + "] = " + a[i]);
}
}
}
This is an example from CSci 2101 course.