I'm working on Android studio and I'm trying to create a random name generator that retrieves a name from the text file "RandomNames.txt" when a button is clicked. What I get instead is "RandomNames.txt" as the name instead of what's actually in the file. Does anyone have a solution for this? Thanks in advance.
private void GenerateRandomName() {
ArrayList<String> arr = new ArrayList<String>();
Scanner scan = new Scanner("RandomNames.txt");
while(scan.hasNextLine()) {
String s = scan.nextLine();
arr.add(s);
}
scan.close();
Random rand = new Random();
username = arr.get(rand.nextInt(arr.size()));
}
Scanner
's string constructor reads input from the given string. If you want to treat it as a file, you need to use one of the constructors that takes a File
, Path
or InputStream
. Eg:
Scanner scan = new Scanner(new File("RandomNames.txt"));
The technical post webpages of this site follow the CC BY-SA 4.0 protocol. If you need to reprint, please indicate the site URL or the original address.Any question please contact:yoyou2525@163.com.