Java FileInputStream Copy copyFileFolder(final File source, final File dest, final boolean override)

Description

copy File Folder

License

Open Source License

Parameter

Parameter	Description
source	the source file or folder
dest	the dest file or folder
override	if to override if the dest exists.

Exception

Parameter	Description
IOException	if any error occurs.

Declaration

public static void copyFileFolder(final File source, final File dest, final boolean override)
        throws IOException 

Method Source Code

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

import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;

public class Main {
    /** Block size for file copying. */
    public static final int BLOCK_SIZE_BYTES = 1024;

    /**//from   ww  w  .ja  v  a 2  s .c  om
     * @param source the source file or folder
     * @param dest the dest file or folder
     * @param override if to override if the dest exists.
     * @throws IOException if any error occurs.
     */
    public static void copyFileFolder(final File source, final File dest, final boolean override)
            throws IOException {
        if (dest.exists()) {
            if (!override) {
                return;
            } else {
                deleteFileFolder(dest);
            }
        }

        if (source.isDirectory()) {
            dest.mkdirs();
            final File[] children = source.listFiles();
            for (final File child : children) {
                copyFileFolder(child, new File(dest.getAbsolutePath() + "/" + child.getName()), override);
            }
        } else {
            InputStream in = null;
            OutputStream out = null;
            try {
                in = new FileInputStream(source);
                out = new FileOutputStream(dest);

                // Transfer bytes from in to out
                final byte[] buf = new byte[BLOCK_SIZE_BYTES];
                int len;
                while ((len = in.read(buf)) > 0) {
                    out.write(buf, 0, len);
                }
            } finally {
                if (in != null) {
                    in.close();
                }
                if (out != null) {
                    out.close();
                }
            }
        }
    }

    /**
     * @param f the file or folder to be deleted.
     * @throws IOException if any error occurs.
     * */
    public static void deleteFileFolder(final File f) throws IOException {
        if (!f.exists()) {
            return;
        }
        if (f.isDirectory()) {
            for (final File c : f.listFiles()) {
                deleteFileFolder(c);
            }
        }
        if (!f.delete()) {
            throw new FileNotFoundException("Failed to delete file: " + f);
        }
    }
}

Related

1. copyFileAndReName(String destPath, String srcPath, String srcFile, String destFile)
2. copyFileAsStream(String srcFilePathName, String dstFilePathName)
3. copyFileBin(File sourceFile, File targetFile)
4. copyFileBinary(String source, String destination)
5. copyFileContents(File fromFile, File destination, boolean useTempFilenames)
6. copyFileFromFileToFile(File fromFile, File toFile)
7. copyFileFromTo(String filename, File fromDir, File toDir)
8. copyFileLowLevel(File source, File target)
9. copyFileR(File srcFile, File destDirectory)