JavaFX ReadFile counter + another counter task?

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i have a UI whit 2 labels.

First Label: All Lines Second Label: Lines ends with xxx

My Programm Read a File and in a Task he Read all Lines:

public class ReadFileTask extends Task<Void> {

@Override
protected Void call() throws Exception {

    File file = new File("C:\\Users\\patrik\\Documents\\comments.txt"); //TODO

    long lines = Files.lines(file.toPath()).count();
    long line = 0;
    BufferedReader reader = new BufferedReader(new FileReader(file));
    while ((reader.readLine()) != null) {
        line++;
        updateMessage("" + line);

    }
    return null;
}}

Now i have the First label.

For the 2nd Label i try this:

public class ReadFileTask extends Task<Void> {

@Override
protected Void call() throws Exception {

    File file = new File("C:\\Users\\patrik\\Documents\\comments.txt"); //TODO

    long lines = Files.lines(file.toPath()).count();
    long line = 0;
    BufferedReader reader = new BufferedReader(new FileReader(file));
    while ((reader.readLine()) != null) {
        line++;
        updateMessage("" + line);

                if (reader.readLine().endsWith("xxx")) {



                }          
    }
    return null;
}}

the problem is, i don´t know how can i set the 2nd label?

           if (reader.readLine().endsWith("xxx")) {   }  

what i have to do? the label name is xxxLabel, when i try

int xxxLines = 0;
if (reader.readLine().endsWith("xxx")) {
xxxLines++;
xxxLabel.setText("" + xxxLines);
}

is it not working :/

if i debug i go in this line: " xxxLabel.setText.... and get a exception from task class:

catch (final Throwable th) {
            // Be sure to set the state after setting the cause of failure
            // so that developers handling the state change events have a
            // throwable to inspect when they get the FAILED state. Note
            // that the other way around is not important -- when a developer
            // observes the causeOfFailure is set to a non-null value, even
            // though the state has not yet been updated, he can infer that
            // it will be FAILED because it can be nothing other than FAILED
            // in that circumstance.
            task.runLater(() -> {
                task._setException(th);
                task.setState(State.FAILED);
            });

asked 1 min ago

Patrik

3

JavaFX ReadFile counter + another counter task?