Variable Arguments

o Variable arguments, or varargs, allow a method to accept any number of arguments.

printNumberList(“Numbers”, 1, 2, 3); //method call

void printNumberList(String header, int… list) {

System.out.println(header);

for (int item : list) {

System.out.println(item);

}

}

o Only one vararg parameter is allowed per  method.

o The vararg must be the last parameter.

o The vararg parameter is implemented as  an array. Therefore, the compiler sees  these methods declarations as equivalent:

void printNumberList(String header, int[] list);

void printNumberList(String header, int… list);

o Since the compiler implements variable arguments using arrays, the vararg can be treated as an array.

void printList(String header, int… list) {

System.out.println(header);

for (int i = 0; i < list.length; i++) {

System.out.println(list[i]);

}

}