1 // Application to sum numbers 2 3 public class Sum 4 { 5 public static void main (String[] args) 6 { 7 // variable declarations of primitive types, initialization 8 int a=2, b=3, firstsum; 9 double x = 4.5, y, secondsum; 10 float f = 1.2F; 11 12 // arithmetic and assignment 13 firstsum = a + b; 14 15 // cast - type conversion - not required here 16 y = (double) firstsum; 17 18 /* more arithmetic and print to standard out 19 using string catenation to prepare output string */ 20 secondsum = x + y; 21 System.out.println("\n" + "The first sum is " + firstsum); 22 System.out.println("The second sum is " + secondsum + "\n"); 23 } 24 } 25