Database System Concepts
Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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Java Program ASAP
************This program must work in hypergrade and pass all the test cases.**********
The text files are located in Hypergrade. Also for test case 1 first display Please enter a string to convert to Morse code:\n then you press Enter it should print out \n. Then for test case 2 it should display Please enter a string to convert to Morse code:\n then you type abc it should print out .- -... -.-. \n For test case 3 first display Please enter a string to convert to Morse code:\n then you type This is a sample string 1234.ENTER it should print put - .... .. ... .. ... .- ... .- -- .--. .-.. . ... - .-. .. -. --. .---- ..--- ...-- ....- .-.-.- \n.
This program down below does not pass the test cases as shown in the screenshot I have provided the correct test case as a screenshot too. Please modify it or create a new program so it paases the test cases. Thank you!
For test case 1 it wants only
Please enter a string to convert to Morse code:\n
ENTER
\n
For test case 2 it wants only
Please enter a string to convert to Morse code:\n
abcENTER
.- -... -.-. \n
For test case 3 it wants only
Please enter a string to convert to Morse code:\n
This is a sample string 1234.ENTER
- .... .. ... .. ... .- ... .- -- .--. .-.. . ... - .-. .. -. --. .---- ..--- ...-- ....- .-.-.- \n

import java.io.BufferedReader;
import java.io.FileReader;
import java.io.IOException;
import java.util.HashMap;
import java.util.Scanner;

public class MorseEncoder {
private static final HashMap<Character, String> codeMappings = new HashMap<>();

public static void main(String[] args) {
initializeMappings();

Scanner textScanner = new Scanner(System.in);
System.out.println("Please enter a string to convert to Morse code:");
String textForEncoding = textScanner.nextLine().toUpperCase();

if ("ENTER".equals(textForEncoding)) {
System.out.println();
return;
}

String encodedOutput = encodeText(textForEncoding);
System.out.println(encodedOutput);
}

private static void initializeMappings() {
try (BufferedReader mappingFile = new BufferedReader(new FileReader("morse.txt"))) {
String lineContent;
while ((lineContent = mappingFile.readLine()) != null) {
if (lineContent.length() < 5) {
continue;
}
char alphaChar = lineContent.charAt(0);
String morseString = lineContent.substring(4).trim();
codeMappings.put(alphaChar, morseString);
}
} catch (IOException ioEx) {
ioEx.printStackTrace();
}
}

private static String encodeText(String textForEncoding) {
StringBuilder encodedStringBuilder = new StringBuilder();
boolean lastCharWasSpace = false;

for (char individualChar : textForEncoding.toCharArray()) {
if (individualChar == ' ') {
if (!lastCharWasSpace) {
encodedStringBuilder.append(" ");
lastCharWasSpace = true;
}
continue;
}

lastCharWasSpace = false;
String morseSymbol = codeMappings.get(individualChar);
if (morseSymbol != null) {
encodedStringBuilder.append(morseSymbol).append(' ');
}
}

return encodedStringBuilder.toString().trim();
}
}

Chapter 9. PC #14. Word Separator (modified *** Read carefully ***)
Write a program that prompts the user to enter a file name, then opens the file in text mode and reads it line by line. While entering the file name, the program should allow the user to type quit to exit the program. If the file with a given name does not exist, then display a message and allow the user to re-enter the file name.
The file can contain one or more sentences. The program should accept as input each sentence in which all the words are run together, but the first character of each word is uppercase. Convert sentences to strings in which the words are separated by spaces and only the first word starts with an uppercase letter. For example, the string StopAndSmellTheRoses." would be converted to "Stop and smell the roses." Sentences are separated by periods ('.'), exclamation marks ('!'), or question marks ('?'). Ensure that there is one space character in between sentences.
morse.txt

0 -----
1 .----
2 ..---
3 ...--
4 ....-
5 .....
6 -....
7 --...
8 ---..
9 ----.
, --..--
. .-.-.-
? ..--..
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 --..
Transcribed Image Text:Test Case 1 Please enter a string to convert to Morse code: \n ENTER \n Test Case 2 Please enter a string to convert to Morse code: \n abc ENTER Test Case 3 \n Please enter a string to convert to Morse code: \n This is a sample string 1234. ENTER \n
Transcribed Image Text:Test Case 1 Passed! Please enter a string to convert to Morse code: \n ENTER n Test Case 2 Failed Show what's missing Please enter a string to convert to Morse code: \n abc ENTER \n Test Case 3 Failed Show what's missing Please enter a string to convert to Morse code: \n This is a sample string 1234. ENTER · -... - ..- \n
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