Java Directory Copy copyDirectory(File sourceDir, File destDir)

Description

copy Directory

License

Open Source License

Parameter

Parameter	Description
sourceDir	a parameter
destDir	a parameter

Exception

Parameter	Description

Declaration

public static void copyDirectory(File sourceDir, File destDir) throws IOException 

Method Source Code

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

import java.io.*;
import java.util.Collection;
import java.util.Vector;

public class Main {
    /**/*from   w  w  w .  j  a v  a 2s  .  c  om*/
     * @param sourceDir
     * @param destDir
     * @throws java.io.IOException
     */
    public static void copyDirectory(File sourceDir, File destDir) throws IOException {
        if (!destDir.exists()) {
            destDir.mkdir();
        }
        File[] children = sourceDir.listFiles();
        for (File sourceChild : children) {
            String name = sourceChild.getName();
            File destChild = new File(destDir, name);
            if (sourceChild.isDirectory()) {
                copyDirectory(sourceChild, destChild);
            } else {
                copyFile(sourceChild, destChild);
            }
        }
    }

    /**
     * 
     * @param directory : parent directory
     * @param filter : a FileName filter, null if you are interested in retrieving all files 
     * @param recurse : if true collects also files from subdirs  
     * @return a collection containing all files in the directory
     */
    public static Collection<File> listFiles(File directory, FilenameFilter filter, boolean recurse) {
        Vector<File> files = new Vector<File>();

        File[] entries = directory.listFiles();

        for (File entry : entries) {
            // If there is no filter or the filter accepts the
            // file / directory, add it to the list
            if (filter == null || filter.accept(directory, entry.getName())) {
                files.add(entry);
            }

            // If the file is a directory and the recurse flag
            // is set, recurse into the directory
            if (recurse && entry.isDirectory()) {
                files.addAll(listFiles(entry, filter, recurse));
            }
        }

        return files;
    }

    /**
     * 
     * @param source File to be copied
     * @param dest File where to put the copy of source
     * @throws java.io.IOException
     */
    public static void copyFile(File source, File dest) throws IOException {
        if (!dest.exists()) {
            dest.createNewFile();
        }
        InputStream in = null;
        OutputStream out = null;
        try {
            in = new FileInputStream(source);
            out = new FileOutputStream(dest);
            byte[] buf = new byte[1024];
            int len;
            while ((len = in.read(buf)) > 0) {
                out.write(buf, 0, len);
            }

        } finally {
            in.close();
            out.close();
        }
    }
}

Related

1. copyDirectory(File source, File target)
2. copyDirectory(File source, File target)
3. copyDirectory(File source, File target)
4. copyDirectory(File source, File target)
5. copyDirectory(File sourceDir, File destDir)
6. copyDirectory(File sourceDir, File destinationDir)
7. copyDirectory(File sourceLocation, File targetLocation)
8. copyDirectory(File sourceLocation, File targetLocation)
9. copyDirectory(File sourceLocation, File targetLocation)