Varargs in java (Passing variable no of arguments in java program)

After J2SE 5.0 java supports passing of variable arguments in a method that u don't need to fix the no of arguments at the time of defining the method .
Compiler automatically converts the arguments in the form of array so u can access all the arguments at run time.

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Example:-

public class Varargs
{
 
    public static void main(String[] args)
    {
 
        Varargs var = new Varargs();
 
        var.show("Ankit", "Singh", "Katiyar");
 
        var.show("facebook.com\"", "ankitkatiyar91");
 
    }
 
    public void show(String... arg)
 
    {
 
        for (int i = 0; i < arg.length; i++)
 
        {
 
            System.out.println(arg[i]);
 
        }
 
    }
 
}

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Note:- it   works only it version J2SE 5.0 or above.

You can use any data type for variable arguments.

Example:-

package javaTest;

public class Varargs {

public static void main(String[] args) {

// TODO Auto-generated method stub

Varargs var=new Varargs();

var.show(1,2,3);

var.show(9,7);

}

public void show(int... arg)

{

for(int i=0;i<arg.length;i++) 

{

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

}

}

}

Rules :-

* For any method it must be the last argument.