Constants in Java

// Constant example
class Constant1
{
static final int NUMBER_OF_MONTHS = 12;
static final double PI = (double) 22 / 7;
public static void main( String args[] )
{
 System.out.println("NUMBER_OF_MONTHS : " + NUMBER_OF_MONTHS );
 System.out.println("PI : " + PI );
}
}

Output:
NUMBER_OF_MONTHS : 12
PI : 3.142857142857143