Ok grazie.
sto provando questo codice su netbeans, che dovrebbe produrre un file .xls dai dati contenuti in una jtable.
Purtroppo il codice resta in esecuzione e ci resta, senza produrmi il file .xls
Qualcuno potrebbe provarlo e dirmi qualcosa a riguardo?
Grazie
codice:
package javaapplication39;

import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.File;
import java.io.FileWriter;
import java.io.IOException;

import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.table.DefaultTableModel;
import javax.swing.table.TableModel;

public class ExcelExporter {
        public ExcelExporter() {
        }

        public void exportTable(JTable table, File file) throws IOException {
                TableModel model = table.getModel();
                FileWriter out = new FileWriter(file);

                for (int i = 0; i < model.getColumnCount(); i++) {
                        out.write(model.getColumnName(i) + "\t");
                }
                out.write("\n");
                for (int i = 0; i < model.getRowCount(); i++) {
                        for (int j = 0; j < model.getColumnCount(); j++) {
                                out.write(model.getValueAt(i, j).toString() + "\t");
                        }
                        out.write("\n");
                }
                out.close();
                System.out.println("write out to: " + file);
        }

        public static void main(String[] args) {
                String[][] data = { { "Housewares", "$1275.00" }, { "Pets", "$125.00" }, { "Electronics", "$2533.00" }, { "Mensware", "$497.00" } };
                String[] headers = { "Department", "Daily Revenue" };

                JFrame frame = new JFrame("JTable to Excel Hack");
                DefaultTableModel model = new DefaultTableModel(data, headers);
                final JTable table = new JTable(model);
                JScrollPane scroll = new JScrollPane(table);

                JButton export = new JButton("Export");
                export.addActionListener((ActionEvent evt) -> {
                    try {
                        ExcelExporter exp = new ExcelExporter();
                        exp.exportTable(table, new File("results.xls"));
                    } catch (IOException ex) {
                        System.out.println(ex.getMessage());
                    }
                });

                frame.getContentPane().add("Center", scroll);
                frame.getContentPane().add("South", export);
                frame.pack();
                frame.setVisible(true);
        }
}