Answer to Question #294512 in Java | JSP | JSF for byybo123

Question

how to transfer data from java txt file to JTable

Answer 1

import javax.swing.*;
import javax.swing.table.DefaultTableModel;
import java.awt.*;
import java.io.BufferedReader;
import java.io.FileInputStream;
import java.io.InputStreamReader;

public class Main {
    public static void main(String[] args) {
        JFrame tableFrame = new JFrame("Table");
        JPanel tablePanel = new JPanel();
        tablePanel.setLayout(new BorderLayout());
        DefaultTableModel defaultTableModel = new DefaultTableModel();
        defaultTableModel.addColumn("Integers");
        JTable table = new JTable(defaultTableModel);
        JScrollPane scrollPane = new JScrollPane(table);
        JButton button = new JButton("Load");
        button.addActionListener(event -> {
            try (BufferedReader fileIn = new BufferedReader(new InputStreamReader(new FileInputStream("data.txt")))) {
                String line;
                while ((line = fileIn.readLine()) != null) {
                    DefaultTableModel model = (DefaultTableModel) table.getModel();
                    model.addRow(new String[]{line});
                }
            } catch (Exception e) {
            }

        });
        tablePanel.add(scrollPane, BorderLayout.CENTER);
        tablePanel.add(button, BorderLayout.SOUTH);
        tableFrame.add(tablePanel);


        tableFrame.setSize(200, 250);
        tableFrame.setResizable(false);
        tableFrame.setVisible(true);
        tableFrame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
    }
}