Java JFileChooser Filter completeFileExtension(File file, FileFilter filter)

Description

complete File Extension

License

Open Source License

Declaration

public static File completeFileExtension(File file, FileFilter filter) 

Method Source Code

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

import java.io.File;

import javax.swing.filechooser.FileFilter;
import javax.swing.filechooser.FileNameExtensionFilter;

public class Main {
    public static File completeFileExtension(File file, FileFilter filter) {
        if ((file != null) && (filter != null)) {
            if (filter instanceof FileNameExtensionFilter) {
                String[] exts = ((FileNameExtensionFilter) filter)
                        .getExtensions();
                String fName = file.getName();
                if ((exts != null) && (fName != null)) {
                    int dotPos = fName.indexOf('.');
                    if ((exts.length == 1)
                            && ((dotPos < 0) || (dotPos == (fName.length() - 1)))) {
                        if (dotPos < 0) {
                            fName += ".";
                        }//  w  w w.j  a v a2  s . co m
                        fName += exts[0];
                        File parent = file.getParentFile();
                        if (parent != null) {
                            file = new File(parent, fName);
                        } else {
                            file = new File(fName);
                        }
                    }
                }
            }
        }
        return file;
    }
}

Related

1. accept(File f, Collection filters)
2. createFileFilter(final String description, final String[] extensions)
3. createFileFilter(final String description, String extension)
4. createFileFilter(final String ext, final String desc)
5. createFileFilter(final String filter)