Java BufferedInputStream Copy copyFile(File srcFile, File destFile, boolean createCopy)

Description

Copy a File.

License

Open Source License

Parameter

Parameter	Description
srcFile	a parameter
destFile	a parameter
createCopy	If this is true and the destination file exists, the file is copied such as "myfile(1).txt"

Exception

Parameter	Description
IOException	an exception

Declaration

public static void copyFile(File srcFile, File destFile, boolean createCopy) throws IOException 

Method Source Code

//package com.java2s;
import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;

public class Main {
    /**//from   w w  w. j  a v  a  2s .  c  om
     * Copy a File.  The Source file must exist.
     * @param srcFile
     * @param destFile
     * @param createCopy If this is true and the destination file exists, the file is copied such as "myfile(1).txt"
     * @throws IOException
     */
    public static void copyFile(File srcFile, File destFile, boolean createCopy) throws IOException {
        if (createCopy) {
            if (srcFile.equals(destFile) || destFile.exists()) {
                int i = 1;
                String name = getFileNameWithoutExtension(srcFile);
                String ext = getFileExtension(srcFile);
                do {
                    destFile = new File(destFile.getParentFile(), name + "(" + i++ + ")" + ext); //$NON-NLS-1$ //$NON-NLS-2$
                } while (destFile.exists());
            }
        } else {
            if (srcFile.equals(destFile)) {
                throw new IOException("Source and Target Files cannot be the same"); //$NON-NLS-1$
            }
        }

        int bufSize = 1024;
        byte[] buf = new byte[bufSize];
        BufferedInputStream bis = new BufferedInputStream(new FileInputStream(srcFile), bufSize);
        BufferedOutputStream bos = new BufferedOutputStream(new FileOutputStream(destFile), bufSize);
        int size;
        while ((size = bis.read(buf)) != -1) {
            bos.write(buf, 0, size);
        }
        bos.flush();
        bos.close();
        bis.close();
    }

    /**
     * Get the short name portion of a filename not including the extension.
     * @param file The File in question
     * @return The name part of a file name excluding the extension
     */
    public static String getFileNameWithoutExtension(File file) {
        String fileName = file.getName();
        int i = fileName.lastIndexOf('.');
        if (i > 0 && i < fileName.length() - 1) {
            return fileName.substring(0, i);
        } else {
            return fileName;
        }
    }

    /**
     * Get the extension portion of a filename.
     * @param file The File in question
     * @return The extension part of the filename including the "." or "" if no extension
     */
    public static String getFileExtension(File file) {
        String fileName = file.getName();
        int i = fileName.lastIndexOf('.');
        if (i > 0 && i < fileName.length() - 1) {
            return fileName.substring(i).toLowerCase();
        }
        return ""; //$NON-NLS-1$
    }
}

Related

1. copyFile(File src, File dst)
2. copyFile(File src, File dst)
3. copyFile(File src, File target)
4. copyFile(File src, File targetDir, boolean onlyNew)
5. copyFile(File src, String target)
6. copyFile(File srcFile, File detFolder)
7. copyFile(File srcFile, File targetFolder)
8. copyFile(final File from, final File to)
9. copyFile(final File fSource, final File fDest)