FileCopier.java

package org.droiddraw.util;

import java.io.BufferedInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;

public class FileCopier {
	public static void copy(File file, File dir, boolean overwrite) 
		throws IOException
	{
		BufferedInputStream bis = new BufferedInputStream(new FileInputStream(file));
		File out = new File(dir, file.getName());
		if (out.exists() && !overwrite) {
			throw new IOException("File: "+out+" already exists.");
		}
		FileOutputStream fos = new FileOutputStream(out, false);
		
		byte[] block = new byte[4096];
		int read = bis.read(block);
		while (read != -1) {
			fos.write(block, 0, read);
			read = bis.read(block);
		}
	}
}