How Can I Share Data Between Two SwingWorker Classes?

Sharing Data Between SwingWorker Classes: An In-depth Explanation

When working with SwingWorker classes, sharing data between them can often arise. Here's a detailed explanation of how it can be achieved:

In your example, you have two SwingWorker classes: FileLineCounterThread and FileDivisionThread. You intend to execute these threads sequentially and pass the result from the FileLineCounterThread to the FileDivisionThread. The following steps provide a solution to your issue:

1. Declare a shared variable: Create a variable outside of both SwingWorker classes that will serve as a shared resource. This variable will hold the data that you want to pass between the workers.
2. Set the shared variable in the first SwingWorker: In the doInBackground() method of the FileLineCounterThread, set the shared variable with the result of the line counting operation.
3. Access the shared variable in the second SwingWorker: In the doInBackground() method of the FileDivisionThread, access the shared variable to retrieve the line count for the division operation.

Example:

Assuming your shared variable is an integer called lineCount, the code would look something like this:

// FileLineCounterThread
protected Integer doInBackground() {
    // Perform line counting
    lineCount = ... // Calculate the line count
    return lineCount;
}

// FileDivisionThread
protected Integer doInBackground() {
    int divResult = ... // Perform division operation using lineCount
    return divResult;
}

1. Synchronization: To ensure data integrity, consider using synchronization techniques to prevent data corruption during concurrent access. This can be achieved using synchronized methods, lock objects, or synchronization blocks.

I hope this provides a clearer understanding of how to share data between SwingWorker classes.

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