java-online-course · Greeent · Jun 3, 2021
diff --git a/java-data-handling-template.iml b/java-data-handling-template.iml
@@ -0,0 +1,23 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module org.jetbrains.idea.maven.project.MavenProjectsManager.isMavenModule="true" type="JAVA_MODULE" version="4">
+  <component name="NewModuleRootManager" LANGUAGE_LEVEL="JDK_1_8">
+    <output url="file://$MODULE_DIR$/target/classes" />
+    <output-test url="file://$MODULE_DIR$/target/test-classes" />
+    <content url="file://$MODULE_DIR$">
+      <sourceFolder url="file://$MODULE_DIR$/src/main/java" isTestSource="false" />
+      <sourceFolder url="file://$MODULE_DIR$/src/main/resources" type="java-resource" />
+      <sourceFolder url="file://$MODULE_DIR$/src/test/java" isTestSource="true" />
+      <excludeFolder url="file://$MODULE_DIR$/target" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+    <orderEntry type="library" scope="TEST" name="Maven: org.junit.jupiter:junit-jupiter:5.5.2" level="project" />
+    <orderEntry type="library" scope="TEST" name="Maven: org.junit.jupiter:junit-jupiter-api:5.5.2" level="project" />
+    <orderEntry type="library" scope="TEST" name="Maven: org.apiguardian:apiguardian-api:1.1.0" level="project" />
+    <orderEntry type="library" scope="TEST" name="Maven: org.opentest4j:opentest4j:1.2.0" level="project" />
+    <orderEntry type="library" scope="TEST" name="Maven: org.junit.platform:junit-platform-commons:1.5.2" level="project" />
+    <orderEntry type="library" scope="TEST" name="Maven: org.junit.jupiter:junit-jupiter-params:5.5.2" level="project" />
+    <orderEntry type="library" scope="TEST" name="Maven: org.junit.jupiter:junit-jupiter-engine:5.5.2" level="project" />
+    <orderEntry type="library" scope="TEST" name="Maven: org.junit.platform:junit-platform-engine:1.5.2" level="project" />
+  </component>
+</module>
diff --git a/src/main/java/com/epam/izh/rd/online/repository/SimpleFileRepository.java b/src/main/java/com/epam/izh/rd/online/repository/SimpleFileRepository.java
@@ -1,5 +1,12 @@
 package com.epam.izh.rd.online.repository;
 
+import java.io.*;
+import java.net.URISyntaxException;
+import java.net.URL;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.Paths;
+
 public class SimpleFileRepository implements FileRepository {
 
     /**
@@ -10,7 +17,31 @@ public class SimpleFileRepository implements FileRepository {
      */
     @Override
     public long countFilesInDirectory(String path) {
-        return 0;
+        Path pathResult = Paths.get(path);
+        if (!pathResult.isAbsolute()) {
+
+            URL url = getClass().getClassLoader().getResource(path);
+            try {
+                assert url != null;
+                Path pathAbsolut = Paths.get(url.toURI());
+                path = pathAbsolut.toString();
+            } catch (URISyntaxException e) {
+                e.printStackTrace();
+            }
+        }
+
+        File dir = new File(path);
+        long countFiles = 0;
+        if (dir.exists() && dir.isDirectory()) {
+            for (File innerDir: dir.listFiles()) {
+                if (innerDir.isFile()) {
+                    countFiles++;
+                } else {
+                    countFiles += new SimpleFileRepository().countFilesInDirectory(innerDir.getPath());
+                }
+            }
+        }
+        return countFiles;
     }
 
     /**
@@ -21,7 +52,29 @@ public long countFilesInDirectory(String path) {
      */
     @Override
     public long countDirsInDirectory(String path) {
-        return 0;
+        Path pathResult = Paths.get(path);
+        if (!pathResult.isAbsolute()) {
+
+            URL url = getClass().getClassLoader().getResource(path);
+            try {
+                assert url != null;
+                Path pathAbsolut = Paths.get(url.toURI());
+                path = pathAbsolut.toString();
+            } catch (URISyntaxException e) {
+                e.printStackTrace();
+            }
+        }
+
+        File dir = new File(path);
+        long countDirs = 1;
+        if (dir.exists() && dir.isDirectory()) {
+            for (File innerDir: dir.listFiles()) {
+                if (innerDir.isDirectory()) {
+                    countDirs += new SimpleFileRepository().countDirsInDirectory(innerDir.getPath());
+                }
+            }
+        }
+        return countDirs;
     }
 
     /**
@@ -32,7 +85,16 @@ public long countDirsInDirectory(String path) {
      */
     @Override
     public void copyTXTFiles(String from, String to) {
-        return;
+        File dirFrom = new File(from);
+        File dirTo = new File(to);
+        if (!dirTo.getParentFile().exists()) {
+            dirTo.getParentFile().mkdirs();
+        }
+        try {
+            Files.copy(dirFrom.getAbsoluteFile().toPath(), dirTo.getAbsoluteFile().toPath());
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
     }
 
     /**
@@ -44,7 +106,32 @@ public void copyTXTFiles(String from, String to) {
      */
     @Override
     public boolean createFile(String path, String name) {
-        return false;
+        Path pathResultPath = Paths.get(path);
+
+        if (!pathResultPath.isAbsolute()) {
+
+            try {
+                Path pathAbsolut = Paths.get(this.getClass().getProtectionDomain().getCodeSource().getLocation().toURI());
+                path = pathAbsolut.toString() + "\\" + path;
+            } catch (URISyntaxException e) {
+                e.printStackTrace();
+            }
+        }
+        File file = new File(path, name);
+
+        if (!file.getParentFile().exists()) {
+            file.getParentFile().mkdirs();
+        }
+        if (!file.exists()) {
+            try {
+                file.createNewFile();
+                return file.exists();
+
+            } catch (IOException e) {
+                e.printStackTrace();
+            }
+        }
+        return file.exists();
     }
 
     /**
@@ -55,6 +142,19 @@ public boolean createFile(String path, String name) {
      */
     @Override
     public String readFileFromResources(String fileName) {
-        return null;
+
+        String textFromFile = "";
+        try (BufferedReader reader = new BufferedReader(
+                new FileReader("src/main/resources"+ File.separator+fileName))){
+            while (reader.ready()) {
+                textFromFile += reader.readLine();
+            }
+
+        } catch (FileNotFoundException e) {
+            e.printStackTrace();
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+        return textFromFile;
     }
 }
diff --git a/src/main/java/com/epam/izh/rd/online/service/SimpleBigNumbersService.java b/src/main/java/com/epam/izh/rd/online/service/SimpleBigNumbersService.java
@@ -2,6 +2,7 @@
 
 import java.math.BigDecimal;
 import java.math.BigInteger;
+import java.util.ArrayList;
 
 public class SimpleBigNumbersService implements BigNumbersService {
 
@@ -13,7 +14,9 @@ public class SimpleBigNumbersService implements BigNumbersService {
      */
     @Override
     public BigDecimal getPrecisionNumber(int a, int b, int range) {
-        return null;
+        BigDecimal firstNumber = BigDecimal.valueOf(a);
+        BigDecimal secondNumber = BigDecimal.valueOf(b);
+        return firstNumber.divide(secondNumber, range, BigDecimal.ROUND_HALF_UP);
     }
 
     /**
@@ -24,6 +27,14 @@ public BigDecimal getPrecisionNumber(int a, int b, int range) {
      */
     @Override
     public BigInteger getPrimaryNumber(int range) {
-        return null;
+        int[] numbers = new int[range * range];
+        ArrayList<BigInteger> arrayNumbers = new ArrayList<>();
+        for (int i = 2; i < numbers.length; i++) {
+            numbers[i] = i;
+            if (BigInteger.valueOf(numbers[i]).isProbablePrime(i)) {
+                arrayNumbers.add(BigInteger.valueOf(numbers[i]));
+            }
+        }
+        return arrayNumbers.get(range);
     }
 }
diff --git a/src/main/java/com/epam/izh/rd/online/service/SimpleDateService.java b/src/main/java/com/epam/izh/rd/online/service/SimpleDateService.java
@@ -2,6 +2,7 @@
 
 import java.time.LocalDate;
 import java.time.LocalDateTime;
+import java.time.Year;
 import java.time.format.DateTimeFormatter;
 
 public class SimpleDateService implements DateService {
@@ -14,7 +15,13 @@ public class SimpleDateService implements DateService {
      */
     @Override
     public String parseDate(LocalDate localDate) {
-        return null;
+        String month = "0";
+        if (localDate.getMonthValue() < 10) {
+            month = month + localDate.getMonthValue();
+        } else {
+            month = "" + localDate.getMonthValue();
+        }
+        return String.format("%d-%2s-%d", localDate.getDayOfMonth(), month, localDate.getYear());
     }
 
     /**
@@ -25,7 +32,12 @@ public String parseDate(LocalDate localDate) {
      */
     @Override
     public LocalDateTime parseString(String string) {
-        return null;
+        int year = Integer.parseInt(string.substring(0, 4));
+        int mount = Integer.parseInt(string.substring(5, 7));
+        int days = Integer.parseInt(string.substring(8, 10));
+        int hours = Integer.parseInt(string.substring(11, 13));
+        int minutes = Integer.parseInt(string.substring(14, 16));
+        return LocalDateTime.of(year, mount, days, hours, minutes);
     }
 
     /**
@@ -37,7 +49,7 @@ public LocalDateTime parseString(String string) {
      */
     @Override
     public String convertToCustomFormat(LocalDate localDate, DateTimeFormatter formatter) {
-        return null;
+        return localDate.format(formatter);
     }
 
     /**
@@ -47,7 +59,12 @@ public String convertToCustomFormat(LocalDate localDate, DateTimeFormatter forma
      */
     @Override
     public long getNextLeapYear() {
-        return 0;
+        long year = Year.now().getValue();
+        do {
+            year++;
+        } while (!Year.isLeap(year));
+
+        return year;
     }
 
     /**
@@ -57,7 +74,15 @@ public long getNextLeapYear() {
      */
     @Override
     public long getSecondsInYear(int year) {
-        return 0;
+        int daysInYear = 365;
+        int hoursInDay = 24;
+        int minutesInHours = 60;
+        int secondsInMinutes = 60;
+        if (Year.isLeap(year)) {
+            daysInYear = 366;
+        }
+        return daysInYear * hoursInDay * minutesInHours * secondsInMinutes;
+
     }
 
 

diff --git a/src/main/java/com/epam/izh/rd/online/service/SimpleRegExpService.java b/src/main/java/com/epam/izh/rd/online/service/SimpleRegExpService.java
@@ -1,5 +1,12 @@
 package com.epam.izh.rd.online.service;
 
+import java.io.BufferedReader;
+import java.io.FileNotFoundException;
+import java.io.FileReader;
+import java.io.IOException;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
 public class SimpleRegExpService implements RegExpService {
 
     /**
@@ -11,7 +18,23 @@ public class SimpleRegExpService implements RegExpService {
      */
     @Override
     public String maskSensitiveData() {
-        return null;
+        String allMaskedText = "";
+        try (FileReader fileReader = new FileReader("src/main/resources/sensitive_data.txt");
+             BufferedReader bufferedReader = new BufferedReader(fileReader);
+        ) {
+            String allText = bufferedReader.readLine();
+            Pattern pattern = Pattern.compile("\\b([0-9]{4})\\s[0-9]{0,9}\\s[0-9]{0,9}\\s([0-9]{4})\\b");
+            Matcher matcher = pattern.matcher(allText);
+            String maskForCard = "$1 **** **** $2";
+            if (matcher.find()) {
+                allMaskedText = matcher.replaceAll(maskForCard);
+            }
+        } catch (FileNotFoundException e) {
+            e.printStackTrace();
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+        return allMaskedText;
     }
 
     /**
@@ -22,6 +45,28 @@ public String maskSensitiveData() {
      */
     @Override
     public String replacePlaceholders(double paymentAmount, double balance) {
-        return null;
+        String replacePlaceholderAllText = "";
+        try (FileReader fileReader = new FileReader("src/main/resources/sensitive_data.txt");
+             BufferedReader bufferedReader = new BufferedReader(fileReader);
+        ) {
+            String allText = bufferedReader.readLine();
+            Pattern patternForBalance = Pattern.compile("\\$\\{balance\\}");
+            Matcher matcherBalance = patternForBalance.matcher(allText);
+            String balanceReplace = String.format("%.0f", balance);
+            String paymentReplace = String.format("%.0f", paymentAmount);
+            if (matcherBalance.find()) {
+                String replacePlaceholderBalance = matcherBalance.replaceAll(balanceReplace);
+                Pattern patternForPayment = Pattern.compile("\\$\\{payment_amount\\}");
+                Matcher matcherPayment = patternForPayment.matcher(replacePlaceholderBalance);
+                if (matcherPayment.find()) {
+                    replacePlaceholderAllText = matcherPayment.replaceAll(paymentReplace);
+                }
+            }
+        } catch (FileNotFoundException e) {
+            e.printStackTrace();
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+        return replacePlaceholderAllText;
     }
 }