No we can instantiate interface directly.but we can create
instantiate  of interface in directly

interface i1
{
    public void wish();
}
public class A implements i1
{
   public static void main(string...arg)
   {
      i1 o1=new A();
         o1.wish();
    }
 public void wish()
{
  System.out.println("we can create instantiate in directly");
}
}

no we can not.

answer no 1. is correct programatically but actually
instantiates means obtain the behavier of object we can do
this only by creating object of class ,object has state and
behaviour, in answer 1,we transfer state first and then
write behaviour in the class,then instantiate that class ie
like dynamic method dispatch.means therotically we can not
instantiate Interfaces

You can only create a reference of an interface but cannot 
instantiate.