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Contact Management App can export your contacts to a comma-separated values (CSV) file for use in spreadsheet applications, CRM tools, or other address book software. The export always targets the currently visible rows in the table — filters and search terms directly control what ends up in the file.

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Running an export

1

Apply filters (optional)

Use the search box and category filter to narrow down which contacts you want to export. Only visible rows are included in the export.
2

Open the export dialog

Click Export CSV in the action bar, press Ctrl+E, or right-click a table row and choose Export visible.
3

Choose a save location

A file chooser dialog opens. Navigate to your desired folder and enter a filename. The .csv extension is added automatically if you omit it.
4

Confirm overwrite (if needed)

If a file with that name already exists, a confirmation dialog appears. Click Yes to overwrite or No to go back and choose a different name.
5

Wait for completion

The status bar shows “Exporting…” while the file is being written, then “Export completed.” when it is done. A success dialog shows the full path to the exported file.

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CSV file format

Exported files use a semicolon (;) as the field separator and include a header row:
exported_contacts.csv
Name;Phone;Email;Category;Favorite;Registration date
Ana Garcia;555-1234;[email protected];Family;Yes;2024-01-15
John Smith;555-5678;[email protected];Work;No;2024-02-20
Column headers are translated according to the active UI language at the time of export.
Fields that contain a semicolon, double-quote, or newline character are automatically quoted per RFC 4180 escaping rules to ensure the exported file can be opened correctly in Excel and other tools.

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Export and filtering

The export function calls the internal method that collects visible rows:
logica_ventana.java
private List<persona> obtenerContactosVisibles() {
    List<persona> visibles = new ArrayList<persona>();
    synchronized (contactosLock) {
        for (int filaVista = 0; filaVista < delegado.tbl_contactos.getRowCount(); filaVista++) {
            int filaModelo = delegado.tbl_contactos.convertRowIndexToModel(filaVista);
            if (filaModelo >= 0 && filaModelo < contactos.size()) {
                visibles.add(contactos.get(filaModelo));
            }
        }
    }
    return visibles;
}
tbl_contactos.getRowCount() returns only the filtered/visible rows, so hidden contacts are never included.

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Background execution

Exports run in a dedicated thread pool (ExecutorService with 2 threads) to avoid freezing the UI. The action buttons are disabled while an export is in progress and re-enabled when it completes.
If you trigger multiple exports in rapid succession, they run concurrently in the thread pool but are synchronized with a lock to prevent file corruption. Wait for the first export to complete before starting another to avoid confusion about which file is being written.

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