writefile.java

public void writeFileOnDisk (String path, String fileName, String csn){
	try{
		PrintWriter write = new PrintWriter(path + fileName, csn);
        write.println("The first line");
        write.close();
	} catch (IOException ex) {
		log.error("Error in writeFileOnDisk", ex);
	} finally {
		if(write != null)
			write.close();
	}
}

//call example: writeFileOnDisk ("C:\\dati\\", "fileTest.txt", "UTF-8");