Morse Code Lab

$1)$ Implement an interface Converter

$2)$ Read in a file that express the code as pairs

$$ char to encode

$$ The combination of dashes and dots the represent it

$3)$ Read in file to

$$ Encode

$$ Decode

Parameters:

Use two hashmaps

$$ To store the strings for the letter and Morse code, use two hashmaps:

$$ One to go from letter to morse

$$ One to go from morse to letters

read the codes in from the MORSECODETABLE file

$$You should pass the filename into the object via the constructor $($see main method$)$

Given Code:

import java.io$.$BufferedReader;

import java.io$.$FileNotFoundException;

import java.io$.$FileReader;

import java.io$.$IOException;

public class Main $\{$

public static void main$($String$[]$ args$)\{$

MorseConverter mc $=$ new MorseConverter$("$MorseCodeTable$.$txt$")$;

String workingDir $=$ System.getProperty$("$user$.$dir"$)+"/"$;

mc$.$printKeyValuePairs$()$;

String fileName $=$ "Quote$2.$txt$"$;

String copyfileName $=$ "Quote$2$Copy.txt$"$;

String saveFileName $=$ "Quote$2$Morse.txt$"$;

StringBuilder sb $=$ new StringBuilder$()$;

try $($BufferedReader br $=$ new BufferedReader$($new FileReader$($workingDir $+$ fileName$)))\{$

String line $=""$;

while $(($line $=$ br$.$readLine$())!=$ null$)\{$

sb$.$append$($line$)$;

$\}$

$\}$catch $($FileNotFoundException e$)\{$

System.out.print$($workingDir $+$ fileName $+"$ File Not found"$)$;

$\}$

catch $($IOException e$)\{$

e$.$printStackTrace$()$;

$\}$

mc$.$encodeSaveToFile$($sb$.$toString$(),$ workingDir $+$ saveFileName$)$;

String encodeCopy $=$ mc$.$encode$($sb$.$toString$())$;

mc$.$decodeSaveToFile$($encodeCopy$,$ workingDir $+$ copyfileName$)$;

$\}$

$\}$

Given Interface:

public interface Converter $\{$

public void printKeyValuePairs$()$;

public String encode$($String textToEncode$)$;

public String decode$($String textToDecode$)$;

public boolean decodeSaveToFile$($String decode, String filename $)$;

public boolean encodeSaveToFile$($String encode, String filename $)$;

$\}$

Given MorseCodeTable.txt

a $.-$

b $-...$

c $-.-.$

d $-..$

e $.$

f $..-.$

g $--.$

h $....$

i $..$

j $.---$

k $-.-$

l $.-..$

m $--$

n $-.$

o $---$

p $.--.$

q $--.-$

r $.-.$

s $...$

t $-$

u $..-$

v $...-$

w $.--$

x $-..-$

y $-.--$

z $--..$

$0-----$

$1.----$

$2..---$

$3...--$

$4....-$

$5.....$

$6-....$

$7--...$

$8---..$

$9----.$

$..-.-.-$

$,--..--$

$?..--..$

: $---...$

$\text{'}.----.$