Find String or String Array in a File separate them in Java

dicle :

I have a txt file that includes :

Hello Word
myStrings = [str1, str2, str3]
Goodbye Word

I would like to read the file to find the "myStrings" string then have a loop to check if one of the myStrings value [str1, str2, str3] match with a some variable.

Currently I am finding the myStrings like this:

Scanner scanner = new Scanner(fileName);
while (scanner.hasNextLine()) {
    String fileline = scanner.nextLine();
    String myStringsKey = "myStrings =";
    if(fileline.startsWith(myStringsKey)) { 

    }
}

How can I achieve str2 for instance to check with a defined var? I assume I should use "split".

zappee :

For parsing your string you can use the following simple method:

public String[] parseMyStrings(String s) {
    int beginIndex = s.indexOf("[") + 1;
    int endIndex = s.indexOf("]");

    s = s.substring(beginIndex, endIndex);

    // split and trim in one shot
    return s.split(("\\s*,\\s*"));
}

Then, your final code can look like this:

Scanner scanner = new Scanner(fileName);
while (scanner.hasNextLine()) {
    String fileline = scanner.nextLine();
    String myStringsKey = "myStrings =";
    if(fileline.startsWith(myStringsKey)) {

        String[] values = parseMyStrings(fileline);
        System.out.println(Arrays.toString(values));

    }
}

I think your code will be more readable and easier to extend or modify if you put the parsing logic into a separate method.