Java JFileChooser write(File file, String text)

Description

write

License

Open Source License

Declaration

public static void write(File file, String text) throws IOException 

Method Source Code

//package com.java2s;
//License from project: Open Source License 

import java.io.*;
import java.nio.file.*;
import javax.swing.*;
import javax.swing.filechooser.FileNameExtensionFilter;

public class Main {
    public static void write(Path path, String text) throws IOException {
        Files.write(path, text.getBytes("ASCII"));
    }//  w  w  w. j a v  a2  s. c o m

    public static void write(File file, String text) throws IOException {
        write(file.toPath(), text);
    }

    public static void write(JFrame frame, String ext, String desc, String text) throws IOException {
        File file = findFileSave(frame, ext, desc);

        if (file == null) {
            return;
        }

        write(file, text);
    }

    public static void write(JFrame frame, String ext, String desc, byte[] data) throws IOException {
        File file = findFileSave(frame, ext, desc);

        if (file == null) {
            return;
        }

        Files.write(file.toPath(), data);
    }

    public static File findFileSave(JFrame frame, String ext, String desc) {
        JFileChooser chooser = new JFileChooser();
        chooser.setFileFilter(new FileNameExtensionFilter(desc, ext));

        if (chooser.showSaveDialog(frame) != JFileChooser.APPROVE_OPTION) {
            return null;
        }

        return getSelectedFileWithExtension(chooser);
    }

    /**
     * Returns the selected file from a JFileChooser, including the extension from
     * the file filter.
     * From: http://stackoverflow.com/a/18984561
     */
    public static File getSelectedFileWithExtension(JFileChooser c) {
        File file = c.getSelectedFile();
        if (c.getFileFilter() instanceof FileNameExtensionFilter) {
            String[] exts = ((FileNameExtensionFilter) c.getFileFilter()).getExtensions();
            String nameLower = file.getName().toLowerCase();
            for (String ext : exts) { // check if it already has a valid extension
                if (nameLower.endsWith('.' + ext.toLowerCase())) {
                    return file; // if yes, return as-is
                }
            }
            // if not, append the first extension from the selected filter
            file = new File(file.toString() + '.' + exts[0]);
        }
        return file;
    }
}

Related

1. setFile(File file, JFileChooser chooser)
2. setFileChooserFilters(JFileChooser fileDlg, String filters, int selectIndex)
3. setSelectedFile(JFileChooser chooser, File file)
4. SHOW_JFILECHOOSER(String title, String approvetext, int fileselectionmode, boolean multiselection)
5. showFileChooserLoop(Component parentComponent, JFileChooser chooser)
6. writeOnFile(String row)
7. writeStringToFile(String output)