// Varargs (Variable Arguments) allows you to pass a variable number of arguments to a method.

public static int sum(int... numbers) {

int total = 0;

for (int num : numbers) {

total += num;

}

return total;

}

// Normally, you would have to define multiple methods to handle different numbers of arguments, but with varargs, you can handle them all with a single method.

public static int sum(int a, int b) {

return a + b;

}

public static int sumArray (int [] numbers) {

int total = 0;

for (int num : numbers) {

total += num;

}

return total;

}

// Varargs with minimum one argument

public static int sum(int first, int... numbers) {

int total = first; // Start with the first argument

for (int num : numbers) {

total += num;

}

return total;

}

// Varargs with two arguments

public static int sum(int first, int second, int... numbers) {

int total = first + second; // Start with the first two arguments

for (int num : numbers) {

total += num;

}

return total;

}

public static void main(String[] args) {

// Using the sum method with Normal parameters

System.out.println(sum(5, 10)); // Output: 15

// Using the sum method with an array

int[] numbers = {1, 2, 3, 4, 5};

System.out.println(sumArray(numbers)); // Output: 15

// Using the sum method with Varargs

System.out.println(sum(numbers)); // Output: 15

System.out.println(sum()); // Output: 0

}