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First version with two massive of Strings #1

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ce54cf8
First version with two massive of Strings
Dec 1, 2018
e52c518
Second version with LinkedHashMap<String, String>
Dec 2, 2018
855c343
FlashCards with files and commands
Dec 3, 2018
5a7e27c
Added "log", "hardest card", "reset stats"
Dec 9, 2018
084d656
Added args to program "-import", "-export"
Dec 9, 2018
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2 changes: 1 addition & 1 deletion .idea/misc.xml
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207 changes: 206 additions & 1 deletion src/flashcards/Main.java
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Original file line number Diff line number Diff line change
@@ -1,7 +1,212 @@
package flashcards;

import java.util.*;
import java.io.*;

public class Main {

private static Scanner scn = new Scanner(System.in);
private static Map<String, String> cardsMap = new LinkedHashMap<>();
private static Map<String, Integer> errorsMap = new HashMap<>();
private static String exportFileName;

public static void main(String[] args) {
System.out.print("Hello world!");
if (args.length > 0) {
for (int i = 0; i < args.length; i += 2) {
switch (args[i]) {
case "-import":
importCmd(args[i + 1]);
break;
case "-export":
exportFileName = args[i + 1];
break;
}
}
} else {
System.out.println("The program must have 2 or more args");
return;
}
String command = "";
do {
System.out.println("Input the action (add, remove, ask, exit, log, hardest card, reset stats):");
command = scn.nextLine();
switch (command) {
case "add":
addCmd();
break;
case "remove":
removeCmd();
break;
case "ask":
askCmd();
break;
case "log":
log();
break;
case "hardest card":
hardestCard();
break;
case "reset stats":
resetStats();
break;
case "print":
System.out.println(cardsMap);
}
} while (!command.equals("exit"));
exportCmd();
}

private static void resetStats() {
errorsMap = new HashMap<>();
}

private static void hardestCard() {
scn = new Scanner(System.in);
System.out.println("File name:");
String fileName = scn.nextLine();
File file = new File(fileName);
Map<String, Integer> tmpMap = new HashMap<>();
try (Scanner scn = new Scanner(file)) {
while (scn.hasNextLine()) {
tmpMap.put(scn.nextLine(), Integer.parseInt(scn.nextLine()));
}
} catch (IOException e) {
e.printStackTrace();
}
String hardestCard = "";
int errors = 0;
int tmpEr = 0;
for (Map.Entry<String, Integer> error : tmpMap.entrySet()) {
tmpEr = error.getValue();
if (errors < tmpEr) {
errors = tmpEr;
hardestCard = error.getKey();
}
}
System.out.println("The hardest card is " + hardestCard + ". You have " + errors + " errors answering it.");
}

private static void log() {
scn = new Scanner(System.in);
System.out.println("File name:");
String fileName = scn.nextLine();
File file = new File(fileName);
try (FileWriter printWriter = new FileWriter(file)) {
if (!file.exists()) {
file.createNewFile();
}
for (Map.Entry<String, Integer> card : errorsMap.entrySet()) {
printWriter.write(card.getKey() + "\n");
printWriter.write(card.getValue() + "\n");
printWriter.flush();
}
} catch (IOException e) {
e.printStackTrace();
}
System.out.println("The log has been saved");
}

private static void askCmd() {
scn = new Scanner(System.in);
String answer;
System.out.println("How many times to ask?");
int count = scn.nextInt();
int i = 0;
scn = new Scanner(System.in);
for (Map.Entry<String, String> card : cardsMap.entrySet()) {
i++;
System.out.println("Print the definition of \"" + card.getKey() + "\"");
answer = scn.nextLine();
if (answer.equals(card.getValue())) {
System.out.println("Correct answer.");
} else if (cardsMap.containsValue(answer)) {
for (Map.Entry<String, String> secondCard : cardsMap.entrySet()) {
if (secondCard.getValue().equals(answer)) {
System.out.println("Wrong answer (the correct one is \"" + card.getValue() + "\", " +
"you've just written a definition of \"" + secondCard.getKey() + "\" card).");
}
}
if (!errorsMap.containsKey(card.getKey())) {
errorsMap.put(card.getKey(), 1);
} else {
int errors = errorsMap.get(card.getKey());
errorsMap.put(card.getKey(), errors + 1);
}
} else {
System.out.println("Wrong answer (the correct one is \"" + card.getValue() + "\").");
if (!errorsMap.containsKey(card.getKey())) {
errorsMap.put(card.getKey(), 1);
} else {
int errors = errorsMap.get(card.getKey());
errorsMap.put(card.getKey(), errors + 1);
}
}
if (count == i) {
break;
}
}
}

private static void exportCmd() {
String fileName = exportFileName;
File file = new File(fileName);
try (FileWriter printWriter = new FileWriter(file)) {
if (!file.exists()) {
file.createNewFile();
}
for (Map.Entry<String, String> card : cardsMap.entrySet()) {
printWriter.write(card.getKey() + "\n");
printWriter.write(card.getValue() + "\n");
printWriter.flush();
}
} catch (IOException e) {
e.printStackTrace();
}

}

private static void importCmd(String nameFile) {
String fileName = nameFile;
File file = new File(fileName);
int count = 0;
try (Scanner scn = new Scanner(file)) {
while (scn.hasNextLine()) {
count++;
cardsMap.put(scn.nextLine(), scn.nextLine());
}
} catch (IOException e) {
e.printStackTrace();
}
System.out.println(count + " cards have been loaded.");
}

private static void addCmd() {
scn = new Scanner(System.in);
System.out.println("The card:");
String card = "";
while (true) {
card = scn.nextLine();
if (!cardsMap.containsKey(card)) {
break;
}
System.out.println("Cant add. The card is exist.");
}
System.out.println("The definition of the card:");
String definition = scn.nextLine();
cardsMap.put(card, definition);
System.out.println("The pair (\"" + card + "\":\"" + definition + "\") is added.");

}

private static void removeCmd() {
scn = new Scanner(System.in);
System.out.println("The card:");
String card = scn.nextLine();
if (cardsMap.containsKey(card)) {
cardsMap.remove(card);
} else {
System.out.println("Can't remove \"" + card + "\": there is no such card.\n");
}
}

}