Installer: to overwite files from one place to another

package com.awy.util.file;

import java.io.File;

import java.io.FileInputStream;

import java.io.FileOutputStream;

import java.io.IOException;

import java.io.InputStream;

import java.io.OutputStream;

/**

 * This is the utility class to copy file from one place to another

 * 

 * @author awayyout

 * 

 */

public class FileInstaller {

private String sourceFolderPath;

private String targetFolderPath;

/**

* To construct file installer

* 

* @param sourcePath,

*            the path of source files

* @param targetPath,

*            the target path to copy files to

*/

public FileInstaller(String sourcePath, String targetPath) {

this.sourceFolderPath = sourcePath;

this.targetFolderPath = targetPath;

}

/**

* Copy all the file from source to target

* 

* @throws IOException,

*             if file not found or any problem during copy files

*/

public void copyAll() throws IOException {

File targetDir = new File(this.targetFolderPath);

File sourceDir = new File(this.sourceFolderPath);

copyDirectory(sourceDir, targetDir);

}

private void copyDirectory(File srcPath, File dstPath) throws IOException {

if (srcPath.isDirectory()) {

if (!dstPath.exists()) {

dstPath.mkdir();

}

String files[] = srcPath.list();

for (int i = 0; i <>

copyDirectory(new File(srcPath, files[i]), new File(dstPath,

files[i]));

}

}

else {

InputStream in = new FileInputStream(srcPath);

OutputStream out = new FileOutputStream(dstPath);

// Transfer bytes from in to out

byte[] buf = new byte[1024];

int len;

while ((len = in.read(buf)) > 0) {

out.write(buf, 0, len);

}

in.close();

out.close();

}

}

}