Save file

save_file.java

import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;

/**
 * Salvar arquivo.
 *
 * @param filename
 * @param input
 * @throws IOException
 */
public static void saveFile(String filename, InputStream input)
		throws IOException {
		try {
		if (filename == null)
			filename = File.createTempFile("file", ".out").getName();

		// Do no overwrite existing file
		File file = new File(filename);
		for (int i = 0; file.exists(); i++)
			file = new File(filename + i);

		FileOutputStream fos = new FileOutputStream(file);
		BufferedOutputStream bos = new BufferedOutputStream(fos);

		BufferedInputStream bis = new BufferedInputStream(input);
		int aByte;
		while ((aByte = bis.read()) != -1)
			bos.write(aByte);

		bos.flush();
		bos.close();
		bis.close();
	} catch (Exception e) {
		e.printStackTrace();
	}
}