import javax.swing.*;
import javax.swing.text.BadLocationException;
import javax.swing.text.Document;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

public class lol {
    public static void main(String[] args) {
        JFrame mainWindow = new JFrame();
        mainWindow.setTitle("Поиск заданного текста в файлах");
        mainWindow.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        mainWindow.setSize(800,600);
        JTextArea textArea=new JTextArea("6 pos\n" +
                "15 pos\n" +
                "24 pos\n" +
                "38 pos\n" +
                "47 pos\n" +
                "51 pos\n" +
                "64 pos\n" +
                "68 pos\n" +
                "83 pos\n" +
                "97 pos\n" +
                "106 pos\n" +
                "110 pos\n" +
                "119 pos\n" +
                "123 pos\n" +
                "142 pos\n" +
                "146 pos\n" +
                "164 pos\n" +
                "168 pos\n" +
                "182 pos\n" +
                "191 pos\n" +
                "195 pos\n" +
                "204 pos\n" +
                "208 pos\n" +
                "222 pos\n" +
                "226 pos\n" +
                "240 pos\n" +
                "244 pos\n" +
                "263 pos\n" +
                "270 pos\n" +
                "274 pos\n" +
                "293 pos\n" +
                "297 pos\n" +
                "15 pos\n" +
                "24 pos\n" +
                "38 pos\n" +
                "47 pos\n" +
                "51 pos\n" +
                "64 pos\n" +
                "68 pos\n" +
                "83 pos\n" +
                "97 pos\n" +
                "106 pos\n" +
                "110 pos\n" +
                "119 pos\n" +
                "123 pos\n" +
                "142 pos\n" +
                "146 pos\n" +
                "164 pos\n" +
                "168 pos\n" +
                "182 pos\n" +
                "191 pos\n" +
                "195 pos\n" +
                "204 pos\n" +
                "208 pos\n" +
                "222 pos\n" +
                "226 pos\n" +
                "240 pos\n" +
                "244 pos\n" +
                "263 pos\n" +
                "270 pos\n" +
                "274 pos\n" +
                "293 pos\n" +
                "297 pos\n" +
                "301 pos");
        JScrollPane scrollPane=new JScrollPane(textArea);
        JButton btn = new JButton("asd");
        btn.addActionListener(new SelectDirListener(textArea));
        JSplitPane splitPane = new JSplitPane();
        mainWindow.add(splitPane);
        splitPane.setLeftComponent(scrollPane);
        splitPane.setRightComponent(btn);
        mainWindow.setLocationRelativeTo(null);
        mainWindow.setVisible(true);
    }
    public static class SelectDirListener implements ActionListener{
        static JTextArea textArea;
        public SelectDirListener(JTextArea textArea) {
            this.textArea=textArea;
        }

        @Override
        public void actionPerformed(ActionEvent e) {
            Document textAreaDocument =textArea.getDocument();
            try {
                textAreaDocument.remove(0,2);
                //textAreaDocument.insertString(curPosition,replaceTo.getText(),null);
            } catch (BadLocationException ex) {
                JOptionPane.showMessageDialog(null, ex.getLocalizedMessage());
            }
        }
    }
}