public class FileWriterClient {
	public static void main(String[] args) {
		FileWriterCaretaker caretaker = new FileWriterCaretaker();
		FileWriterUtil fileWriter = new FileWriterUtil("data.txt");
		fileWriter.write("First Set of Data\n");
		System.out.println(fileWriter+"\n\n");
		// lets save the file
		caretaker.save(fileWriter);
		//now write something else
		fileWriter.write("Second Set of Data\n");
		//checking file contents
		System.out.println(fileWriter+"\n\n");
		//lets undo to last save
		caretaker.undo(fileWriter);
		//checking file content again
		System.out.println(fileWriter+"\n\n");
	}
}