public class varArgs { static int sum ( int ... arr ) { int sum = 0 ; for ( int a : arr ) { sum += a ; } return sum ; } public static void main ( String [] args ) { System . out . println ( "Sum:" + sum ()); System . out . println ( "Sum:" + sum ( 1 )); System . out . println ( "Sum:" + sum ( 5 , 9 )); System . out . println ( "Sum:" + sum ( 10 , 13 , 15 )); System . out . println ( "sum:" + sum ( 51 , 17 , 19 , 95 )); System . out . println ( "sum:" + sum ( 121 , 34 , 56 , 67 , 78 , 90 )); } } ...