不使用局部变量字的值

Question

I have a method that has a Scanner as a parameter. The purpose of the method is to count the number of words in a file and return that number. Here is the method:

public static int getWordCount(Scanner inputFile) 
        throws FileNotFoundException  {
    int wordCount = 0;      
    while(inputFile.hasNext()) {
        String word = inputFile.next();         
        wordCount++;                
    }
    return wordCount;       
}

The method works fine, however I get a "The value of the local variable word is not used" warning which I would like to get rid of. I understand why I am getting the warning, however, as far as I know, I need the

String word = inputFile.next(); 

to move the pointer through the file. I can suppress the warning, however, I figure that there is probably a better way of doing what I am trying to do. I can only use Scanner class to read the file.

Answer 1

What you are doing is fine, but the warning is given because you only assign to word and never read from it. Try just leaving out the assignment and using just inputFile.next() instead with simply not saving the result.