Java Directory Copy nio copyDir(String sourceDir, String targetDir)

Description

copy files from directory sourceDirOrFile to directory targetDirOrFile

License

Apache License

Parameter

Parameter	Description
sourceDirOrFile	a parameter
targetDirOrFile	a parameter

Exception

Parameter	Description
IOException	an exception

Declaration

public static void copyDir(String sourceDir, String targetDir) throws IOException 

Method Source Code

//package com.java2s;
//License from project: Apache License 

import java.io.File;
import java.io.IOException;
import java.nio.file.CopyOption;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.nio.file.StandardCopyOption;
import java.util.ArrayList;
import java.util.List;

public class Main {
    /**/*from   www . j a  v  a  2 s . c o  m*/
     * copy files from directory sourceDirOrFile to directory targetDirOrFile
     * @param sourceDirOrFile
     * @param targetDirOrFile
     * @throws IOException 
     */
    public static void copyDir(String sourceDir, String targetDir) throws IOException {
        File sDir = new File(sourceDir);
        File tDir = new File(targetDir);
        if (!tDir.exists()) {
            tDir.mkdirs();
        }
        if (sDir.exists()) {
            if (sDir.isDirectory()) {
                File[] files = sDir.listFiles();
                for (File listfile : files) {
                    if (listfile.isFile()) {
                        String filename = listfile.getName();
                        String targetFile = tDir.getCanonicalPath() + File.separator + filename;
                        copyFile(listfile.getAbsolutePath(), targetFile);
                    } else if (listfile.isDirectory()) {
                        String sourceDirectory = listfile.getCanonicalPath();
                        String dirname = listfile.getName();
                        String targetDirectory = tDir.getCanonicalPath() + File.separator + dirname;
                        copyDir(sourceDirectory, targetDirectory);
                    }
                }
            }
        } else {
            System.err.println("Copy from " + sourceDir + " to " + targetDir + " error!");
        }
    }

    /**
     * list all files in the dir 
     * @param dir
     * @return
     */
    public static List<File> listFiles(String dir) {
        List<File> files = new ArrayList<>();
        File file = new File(dir);
        if (file.exists() && file.isDirectory()) {
            File[] fs = file.listFiles();
            for (File f : fs) {
                files.add(f);
            }
        } else {
            System.err.println("Dir " + dir + " doesn't exist or is not directory!");
        }
        return files;
    }

    /**
     * copy file sourceFile to targetFile
     * @param sourceFile
     * @param targetFile
     * @throws IOException 
     */
    public static void copyFile(String sourceFile, String targetFile) throws IOException {
        Path fromFile = Paths.get(sourceFile);
        Path toFile = Paths.get(targetFile);
        CopyOption[] options = new CopyOption[] { StandardCopyOption.REPLACE_EXISTING,
                StandardCopyOption.COPY_ATTRIBUTES };
        Files.copy(fromFile, toFile, options);
    }
}

Related

1. copyDir(File dir1, File dir2)
2. copyDir(File sourceDir, File targetDir)
3. copyDir(final Path fromPath, final Path toPath)
4. copyDir(final String src, final String dest)
5. copyDir(Path from, Path to, IProgressMonitor monitor)
6. copyDir(String src, String dst)
7. copyDirectiory(String sourceDir, String targetDir)
8. copyDirectory(File in, File out)
9. copyDirectory(File in, File out)