How to read the amounts of word from a file?

Take a .txt file for example.

For the homework question we have to make a program that takes the name of a file as a parameter and returns an integer, which contains the number of words in that file.
Here's what I've got so far

public static int wordAmount(String file)throws IOException
				{
					int x=0;
        
					
			
			return x; 
				}
               public static void main(String args[]) throws IOException
	{
               //add/find .txt file can call word wordAmount method
        }
        
        

I think I've got the plan right, I just don't know how to add the .txt file, assign it to the method, and for the method to print how many lines there are.

Any help please? thank you!