var arg in method

[saravanan ragunathan]

public class Ex
{
   public static void set(int... a){}
   public static void main(String[] args)
   {
         int[] a=new int[4];
         set(a);//no error
         int b=5;
         set(a,b);//compilation error
        int c=10;
        set(c,a);//compilation error
    }
}

when i pass the primitive variables such as c or b with reference of int array
object(a) i am getting error ...why

[Matthew Brown]

The var-arg method will take either an int array, or any number of int parameters. But you can't mix them.

[saravanan ragunathan]

why the java developers avoids this
is there any performance degradation..any other reason

[Matthew Brown]

It's just how the language is designed. And there are pretty good reasons for the design - you'd run into problems with overloaded methods where it was ambiguous which version was called. But fundamentally, this is one of those questions where the answer is "because that's how it works".

[saravanan ragunathan]

thanks for sharing information ...