Question

A Chinese restaurant wants to have a computer-based search system that will display a recipe for each dish. The owner of the restaurant wants the system to be flexible in that its recipes are stored in a text file. This way, the number of dishes can be expanded by adding more entries to the text file without changing any program code.

After analyzing the coding the restaurant realizes that Current coding only outputs first two line of the recipe.

Goal: Correct/debug “RecipeFinder” class to have the full recipe description in the output console in eclipse rather than having only first two lines. Other features should remain the same.

Requirements

To get full credit, you must follow the requirements specified below:

1. Particularly, you cannot use the Scanner class to read data from the keyboard or from a file. Instead, you should use BufferedReader, FileReader, InputStreamReader.

2. Your code must match your design (the class diagram). This includes the number of classes; the methods inside classes; and the relationships among these classes.

3. Put the unreliable code into Java’s Exception management system (proper use of try-catch construct).

4. Must use automatic file closing feature.

Implementation

Create the text “recipefile.txt” and save it to “C:/tmp/” directory.

Edit the work class “RecipeFinder” inside the project. This is the most difficult class in this program. One thing you need to figure out is how to output the whole body of a recipe based on the specific knowledge of when there is an empty line between the current recipe and the one following it. To help you, I offer the following segment of code (you are not required to use it) for you to use:

…

do {

            info = br.readLine();

            if(info != null) System.out.println(info);

} while((info != null) && (info.trim().compareTo(“ ”) != 0));

return true;

…

DO THE FOLLOWING TO SCORE YOUR POINTS

- Draw a class diagram in the space below (name your work class “RecipeFinder”; the application class “TestRecipeFinder”):

- Paste your source code in the space below (make sure that your code works appropriately, the source code format conforms to Java conventions (with appropriate indentations, you may lose points for not indent appropriately)):

-Test your code

Start afresh.

Type the recipe name “roast fish”.

Type “stop”.

Do a screen capture of the output.

_________________________________________________________

Here is the content of the recipefile.txt in “C:/tmp/” directory.

#appetizers

vegetable, egg roll, mixed with cream cheese, add some Teriyaki chicken, half gallon of water. Cook 15 minutes.

#chow mein

white meat chicken, pork beef, shrimp, vegetable include greens, mushroom, carrots, banana, apple source, half gallon of water. Cook 15 minutes.

#fried rice

plain rice, pork, chicken, beef, shrimp, vegetable, vegetable, include greens, mushroom, carrots, banana, apple source, one ounce of vegetable oil. Add the oil to a wok first, using hot fire to cook the oil to hot and able to see slight smoke. Then add all the ingredients and mix them. Cook 15 minutes.

#poultry dish

Moo Goo Gai Pan, Chicken with Mushroom, Chicken with Black Bean Source, Chicken with Oyster Source, Curry Chicken with onion, Chicken with Pepper & Tomato, Chicken with Broccoli, Chicken with Mixed Vegetable, Sweet & Sour Chicken, Chicken with Garlic Source, Hunan Chicken, Szechuan Chicken.

__________________________________________________________

class TestRecipeFinder {

      public static void main(String[] args) {

            RecipeFinder mysobj = new RecipeFinder("C:/tmp/recipefile.txt");

            String sWrd;

            System.out.print("Welcome to variable search program.\n "

                        + "Enter 'stop' to end.\n");

            do {

                  sWrd = mysobj.getSWd();

                  if(mysobj.searchWd(sWrd)) {

                        System.out.println(mysobj.getLines());

                  }else if(sWrd.equals("stop")){

                       System.out.println("Bye!");

                  }

                  else {

                        System.out.println("Not found.");

                  }

            } while(sWrd.compareTo("stop") != 0);

      }

}

_________________________________________________________________________________________________

// The file to be searched is located in C:/tmp.

import java.io.BufferedReader;

import java.io.FileReader;

import java.io.InputStreamReader;

import java.io.IOException;

class RecipeFinder {

      String fName;

      String line1, line2;

      public RecipeFinder(String s) {

            fName = s;

            line1 = " ";

            line2 = " ";

      }

      // Get a search word from keyboard.

      String getSWd() {

            String info = " ";

            BufferedReader br = new BufferedReader(

                                      new InputStreamReader(System.in));

            System.out.print("\nEnter a recipe name: ");

            try {

                  info = br.readLine();

            } catch (IOException exc) {

                  System.out.println("Error reading console.");

            }

            return info;

      }

      // Search the file for variable name using the string passed in

      boolean searchWd(String tWrd) {

            int ch;

            String info = " ";

            File file = new File(fName);

            try (BufferedReader br = new BufferedReader(

                                        new FileReader(file))) {

                  do {

                        // read characters until a # is found

                        ch = br.read(); // read() reads a byte and returns it as an

                        // integer

                        if (ch == '#') {

                              info = br.readLine();

                              info = info.trim(); // remove space on both ends

                              if (tWrd.compareTo(info) == 0) { // found variable

                                    line1 = info;

                                    info = br.readLine();

                                    line2 = info;

                                    return true;

                              }

                        }

                  } while (ch != -1);

            } catch (IOException exc) {

                  System.out.println("Error accessing file.");

                  return false;

            }

            return false; // variable not found.

      }

      String getLines() {

            String rStr = " ";

            rStr = line1 + "\n" + line2;

            return rStr;

      }

}

Answer 1

--------------------------------------------------------------RecipeFinder.java------------------------------------------------------------------

import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;

import java.io.InputStreamReader;

import java.io.IOException;

class RecipeFinder {

String fName;

String line1, line2;

public RecipeFinder(String s) {
fName = s;
line1 = " ";
line2 = " ";
}

// Get a search word from keyboard.

String getSWd() {

String info = " ";

BufferedReader br = new BufferedReader(new InputStreamReader(System.in));

System.out.print("\nEnter a recipe name: ");

try {

info = br.readLine();

} catch (IOException exc) {

System.out.println("Error reading console.");

}

return info;

}

// Search the file for variable name using the string passed in

boolean searchWd(String tWrd) {

int ch;

String info = " ";

File file = new File(fName);
BufferedReader br = null;

try {
br = new BufferedReader(new FileReader(file));
do {
// read characters until a # is found

ch = br.read(); // read() reads a byte and returns it as an

// integer

if (ch == '#') {
info = br.readLine();
info = info.trim(); // remove space on both ends

if (tWrd.compareTo(info) == 0) { // found variable

line1 = info;
info = br.readLine();

// read the next line after finding the entered recipe name
// if next line is empty and empty line is found by string length method
// if the line length is 0 then next line will be assigned to line2
// then it comes out of loop and output will be displayed
for (int i = 0; info.trim().length() == 0; i++) {
info = br.readLine();
line2 = info;
}
return true;
}
}

} while (ch != -1);

} catch (IOException exc) {
System.out.println("Error accessing file.");
return false;
} finally {
// for the automatic closing of file
if (file != null) {
try {
br.close();
} catch (IOException e) {

}
}
}
return false; // variable not found.
}

String getLines() {

String rStr = " ";

rStr = line1 + "\n" + line2;

return rStr;

}

}

------------------------------------------------------------CLASS DIAGRAM--------------------------------------------------------------------

There is no relatioship between the driver class (TestRecipeFinder.java) and the other class (RecipeFinder) so no relationship is added.

RecipeFinder fName : String line1 String line2 String TestRecipeFinder RecipeFinder(s:String) getSWd() String searchWd(tWrd String) boolean getLines0 String mysobj RecipeFinder sWrd String main(args: String]): void

OUTPUT SCREENSHOT:

Problems Jevadoc DeclarationConsoleDebug 91bin Finder [Java CAPro exe (Mar 18, 2018, 2:43:00P Welcome to variable search program Enter 'stop' to end Enter a recipe name: chow mein chow mein white meat chicken, pork beef, shrimp, vegetable include greens, mushroom, carrots, banana, apple source, half gallon of water. Cook 15 minut Enter a recipe name: appetizers appetizers vegetable, egg roll, mixed with cream cheese, add some Teriyaki chicken, half gallon of water. Cook 15 minute:s Enter a recipe name: poultry dish poultry dish Moo Goo Gai Pan, Chicken with Mushroom, Chicken with Black Bean Source, Chicken with Oyster Source, Curry Chicken with onion, Chicken with Per Enter a recipe name: fried rice fried rice plain rice, pork, chicken, beef, shrimp, vegetable, vegetable, include greens, mushroom, carrots, banana, apple source, one ounce of vegetable Enter a recipe name:

Note:

In RecipeFinder.java I have kept a comment over the code which I have added. For anyu doubts kindly comment I will respond and fix the issue if any found