This week's book giveaway is in the OCAJP 8 forum. We're giving away four copies of OCA Java SE 8 Programmer I Study Guide and have Edward Finegan & Robert Liguori on-line! See this thread for details.
First thing i suppose that var-args are the last choice made by the compiler. In your case, if your see there is already a more specific method
present that is number 1 which takes a float. Now when you try to invoke the method calls from your main method, in your second call, as Ankit
told character is automatically up-casted to float then the compiler gets confused, which method to call as there is already a more specific method
present. Thats why it gives the ambiguity error. Hope this helps.