Method overloading with variable arguments (varargs) [duplicate]

Answer 1

Answer:

1. If we use objects of datatypes like int as Integer it also gives the same error. So the reason is it does not work with Object types and gives errors if no argument is specified for the function.

2. As vararg takes an argument as an Array of a given type. So that's why if you pass no arguments it takes it as an array with zero arguments and executes the integer function because it got one of the functions with an integer argument.

3. It when you put float and double for two different functions and no pass any argument then it executes the float argument function.

Solution:

1. Do not use object types like String, Integer, Float, Double, Boolean, and Char. Instead use int, float, double, and boolean if want to execute one of the functions with no arguments passing.
2. So in the given example we need to specifiy a boolean argument for the Boolean object of non-primitive data type true or false.

public class File
{
    public static void main(String[] args)
    {
        movie(true);
    }

    static void movie(Boolean...x)  //Changed the parameter type to boolean from double
    {
        System.out.println("No varargs"+x);
    }

    static void movie(int...x)
    {
         System.out.println("One argument");
    }
}