???

Question about the task

Resolved

import java.io.*; import java.util.*; /* Extending AmigoOutputStream */ public class QuestionFileOutputStream implements AmigoOutputStream { private AmigoOutputStream or; public QuestionFileOutputStream (AmigoOutputStream aos){ this.or = aos; } public void flush() throws IOException{ or.flush(); } public void write(int b) throws IOException{ or.write(b); } public void write(byte[] b) throws IOException{ or.write(b); } public void write(byte[] b, int off, int len) throws IOException{ or.write(b, off, len); } public void close() throws IOException{ try{ BufferedReader reader = new BufferedReader(new InputStreamReader(System.in)); System.out.println("Do you really want to close the stream? Y/N"); String line = ""; do {line = reader.readLine();} while (!line.equals("Y")); reader.close(); } catch(Exception e){} } }

Using the wrapper (decorator) design pattern, extend the functionality of AmigoOutputStream.
In the QuestionFileOutputStream class, the following functionality should be implemented for the close() method:
1. Display "Do you really want to close the stream? Y/N".
2. Read a line.
3. If the read line is "Y", then close the stream.
4. If the read line is not "Y", then don't close the stream.

Requirements:

Don't change AmigoOutputStream.
The QuestionFileOutputStream class must implement the AmigoOutputStream interface.
The QuestionFileOutputStream class must initialize the AmigoOutputStream field in the constructor.
All of QuestionFileOutputStream's methods must be delegated to the AmigoOutputStream object.
The close() method should ask the user, "Do you really want to close the stream? Y/N".
The close() method should close the stream only if it reads the answer "Y" from the console.

package com.codegym.task.task18.task1812; import java.io.IOException; public interface AmigoOutputStream { void flush() throws IOException; void write(int b) throws IOException; void write(byte[] b) throws IOException; void write(byte[] b, int off, int len) throws IOException; void close() throws IOException; }

Comments (2)

Popular
New
Old

You must be signed in to leave a comment

Guadalupe Gagnon

Level 37 , Tampa, United States

7 March 2019, 18:09

solution

The problem is that you only need to get one response. If it is Y, then close the stream, if it is not Y then do nothing. You have it in a loop that will keep going until Y is entered. You can change lines 37-41 to just this:

if(reader.readLine().equals("Y"))
   or.close();
reader.close();

Djole

Level 41 , Belgrade, Serbia

9 March 2019, 09:38

Cool. Thanks!