Java Copy Directory copyDirectory(File src, File dest)

Description

Copies a directory to another location recursively

License

Open Source License

Parameter

Parameter	Description
targetDir	a parameter

Declaration

static public void copyDirectory(File src, File dest) throws Exception 

Method Source Code

//package com.java2s;
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JAUS Tool Set// w  w w. j  a v  a2s .  com
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import java.io.*;

public class Main {
    /**
     * Copies a directory to another location recursively
     * 
     * @param targetDir
     */
    static public void copyDirectory(File src, File dest) throws Exception {
        if (src.isDirectory()) {
            File destFile = new File(dest.getAbsolutePath() + "/" + src.getName());

            if (!destFile.exists()) {
                if (!destFile.mkdirs()) {
                    throw new Exception("Could not Create " + destFile.getAbsolutePath());
                }
            }

            for (File srcFile : src.listFiles()) {
                if (srcFile.isDirectory()) {
                    copyDirectory(srcFile, destFile);
                } else {
                    try {
                        copyFile(srcFile, new File(destFile.getAbsolutePath() + "/" + srcFile.getName()));
                    } catch (Exception e) {
                        throw new Exception("Util [236]: " + e.toString());
                    }
                }
            }
        } else {
            throw new Exception("Util [243]: Invalid Directory provided");
        }
    }

    /**
     * Copies a file.  
     * 
     * @param src   the File to be copied
     * @param dst   the File to be created
     */
    static public void copyFile(File src, File dst) throws Exception {
        if (src.isFile()) {
            if (!src.exists()) {
                throw new Exception("Source File does not exist");
            }

            if (!dst.exists()) {
                if (!dst.createNewFile()) {
                    throw new Exception("Could not create Destination File");
                }
            }

            if (dst.isFile() && dst.canWrite()) {
                Writer output = new BufferedWriter(new FileWriter(dst));
                output.write(getContents(src));
                output.close();
            } else {
                throw new Exception("Problem writing file: " + dst);
            }
        } else {
            throw new Exception("Util: Invalid File Provided");
        }
    }

    static public String getContents(File file) throws Exception {
        StringBuffer contents = new StringBuffer();
        BufferedReader input = new BufferedReader(new FileReader(file));
        String line;

        while ((line = input.readLine()) != null) {
            contents.append(line);
            contents.append(System.getProperty("line.separator"));
        }
        input.close();

        return contents.toString();
    }
}

Related

1. copyDirectory(File src, File dest, boolean force)
2. copyDirectory(File src, File dst)
3. copyDirectory(File srcDir, File destDir)
4. copyDirectory(File srcDir, File dstDir)