copy searched files to a specific location

Question

i write a program that will search for files with the given extension in my PC. now i want to add one more thing to it. i wish that my program will copy these files into a specific location on my PC. here is my code sample :-

Finder(String pattern) 
    {
        matcher = FileSystems.getDefault().getPathMatcher("glob:" + pattern);
   }

    // Compares the pattern against
    // the file or directory name.
    void find(Path file) {
        Path name = file.getFileName();
        if (name != null && matcher.matches(name)) {
            System.out.println(file);
            String s = new String(name.toString());
            //System.out.println(s);
            File f = new File(s);
            //System.out.println(f.getAbsolutePath());
            FileInputStream fileInputStream = null;

Check [this thread](http://stackoverflow.com/questions/1146153/copying-files-from-one-directory-to-another-in-java) — Luca Basso Ricci, Aug 02 '13 at 06:46
i want to copy all the text files that resides in my PC, to my pendrive. my program is successfully searching for all text files and now i want to copy these.. how i can do this?? — Vicky, Aug 02 '13 at 06:47
Check thread posted in comment above yours: you have only to choice the preferred way (based on you request about time, semplicity of code and so on). [http://stackoverflow.com/questions/1146153/copying-files-from-one-directory-to-another-in-java](http://stackoverflow.com/questions/1146153/copying-files-from-one-directory-to-another-in-java) — Luca Basso Ricci, Aug 02 '13 at 06:55

score 0 · Answer 1 · answered Aug 02 '13 at 06:46

Once you have the FileInputStreams for the files you want to copy, you can create FileOutputStreams outputting into the place you want to copy the files. Then, use a loop like the following to copy the file:

byte temp;
while ((temp = fileInputStream.read()) != -1)
    fileOutputStream.write(temp);

score 0 · Answer 2 · answered Aug 02 '13 at 06:48

0

For a quick way to do it you can use the method FileUtils.copyFileToDirectory from Apache Commons IO.

answered Aug 02 '13 at 06:48

growlingchaos

96
2
8

score 0 · Answer 3 · answered Aug 02 '13 at 06:50

There are new great ways to walk the file tree with the FileVistitor interface. Click here. After approaching a file that matches your criteria, move it using some high performanced new io:

public static void copyFile(File sourceFile, File newDirectory) throws IOException {
    File destFile = new File(newDirectory, sourceFile.getName());
    if(!destFile.exists()) {
        destFile.createNewFile();
    }

    FileChannel source = null;
    FileChannel destination = null;
    try {
        source = new FileInputStream(sourceFile).getChannel();
        destination = new FileOutputStream(destFile).getChannel();
        destination.transferFrom(source, 0, source.size());
    }
    finally {
        if(source != null) {
            source.close();
        }
        if(destination != null) {
            destination.close();
        }
    }
}

Define the directory you want to move the files too in the parameter "newDirectory"

score 0 · Answer 4 · answered Aug 02 '13 at 06:53

There is no question in your question! If you ask how to copy files, you have options:

Use java.nio.file.Files.copy() method. This is preferred since you do not have to copy data yourself, can use Path and it is in standard library
Use streams and copy data yourself as suggested by other answers
There are other ways like invoking command on system to copy

copy searched files to a specific location

4 Answers4