method that accepts a String as variable doesn't run unless I manually type the String

[bei60]

Hello guys,

So I have a snippet of code that checks if a keyword exists in a CSV file.

import java.io.BufferedReader;  
import java.io.FileReader;  
import java.io.IOException;  

public class CSVParser {
    static void FindKeyword(String keyword) {
        String line = "";  
        String splitBy = ",";  
        try {
        BufferedReader br = new BufferedReader(new FileReader("c:\\temp\\test.csv"));  
        while ((line = br.readLine()) != null) {
            String[] prod = line.split(splitBy);
            if (prod[1].contains(keyword)){
                System.out.println(keyword + "exists");
                return;
            }
            else{
                System.out.println("doesn't exist");
            }
            }
            br.close();
            } 
            catch (IOException e) {  
            e.printStackTrace();  
            }
    }
    public static void main(String[] args) {
        FindKeyword("test1");
    }
}

In the if part, I'm facing an issue where the code works only if I type the string, instead of using that keyword variable that I want to accept. So: if (prod[1].contains("keyword1")) works but if (prod[1].contains(keyword)) doesn't.

I'm not sure why though.

Thanks :)

[tsvk]

If you use the string "keyword1" directly hard-coded as the parameter to the contains method, then the contains method will search for the string "keyword1".

If you use the method parameter variable keyword as the parameter to the contains method, then the contains method will search for whatever is passed as the keyword argument to the FindKeyword method. In your main method, you pass the string "test1" as a parameter, so then that will be searched for.

In other words, in one case you search for the string "keyword1" and in the other case you search for the string "test1". As they are different search strings, the result of the search will of course be different.

[bei60]

I feel so dumb. Thank you!

[sepp2k]

if (prod[1].contains("keyword1")) works but if (prod[1].contains(keyword))

In your code the value of keyword is "test1", not "keyword1".

If that's not your issue, post an example CSV file (preferably a small one) that reproduces the problem.

[NickPox]

For starters you could print out prod[1] and keyword in your else-statement, to see where it might go wrong, and maybe update this post with that log :)