类型为nammi的方法epli（String []）不适用于arguments（）

Question

Im new to java and im just trying to use this method 'epli' from another class but when i try to do it it says
The method epli(String[]) in the type nammi is not applicable for the arguments ()

im using eclipse here is all the code:

import java.util.Scanner;
    public class nammi{
        public void epli(String args[]){
        System.out.println("Mér finnst nammi gott");
        }
    }

    public class siggi {
        public static void main(String args[]){
        System.out.println("Eg heiti ekki siggi");
            nammi nammi = new nammi();
            nammi.epli();
        }
    }

Answer 1

You defined epli as:

public void epli(String args[])

So you need to provide an String array when you call it.

If you change the signature of epli to

public void epli()

you can call it the way you are doing it

Answer 2

Your method accepts a String[] data type but you are passing it nothing. You have to pass it a String[].

nammi.epli();

should become

nammi.epli(new String[5]);

or some other String array. You can also pass it a null if you want, but that's not what you should do in this case

nammi.epli(null);

Answer 3

Change the signature of the epli() method to use varargs syntax:

public void epli(String... args){

Within the epli() method, args will actually still has a type of String[] .

Now your calling code will work, and you can pass parameters like this:

nammi.epli(); // OK - args is an empty array (not a null)
nammi.epli("foo"); // args is array size 1
nammi.epli("foo", "bar"); // args is array size 2 etc