variable argument in java

public class cl
{
// A method that takes variable number of intger
// arguments.
static  void f(int ...a)
{
System.out.println("Number of arguments: " + a.length);


for (int i=0;i<a.length;i++)
System.out.print(i + " ");
System.out.println();
}

// Driver code
public static void main(String args[])
{
// Calling the varargs method with different number
// of parameters
f(100); // one parameter
f(1, 2, 3, 4); // four parameters
f(); // no parameter
}
}


output:

$javac cl.java
$java -Xmx128M -Xms16M cl
Number of arguments: 1
0 
Number of arguments: 4
0 1 2 3 
Number of arguments: 0