java-online-course · Gata-chan · Jun 12, 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 +1,11 @@
 package com.epam.izh.rd.online.repository;
 
+import java.io.*;
+import java.nio.file.Files;
+import java.util.List;
+
+import static java.nio.file.StandardCopyOption.REPLACE_EXISTING;
+
 public class SimpleFileRepository implements FileRepository {
 
     /**
@@ -10,7 +16,16 @@ public class SimpleFileRepository implements FileRepository {
      */
     @Override
     public long countFilesInDirectory(String path) {
-        return 0;
+        File dir = new File("src/main/resources/" + path);
+        long counter = 0;
+        if (dir.isDirectory()) {
+            for (File file : dir.listFiles()) {
+                counter += countFilesInDirectory(path + "/" + file.getName());
+            }
+        } else {
+            counter++;
+        }
+        return counter;
     }
 
     /**
@@ -21,7 +36,16 @@ public long countFilesInDirectory(String path) {
      */
     @Override
     public long countDirsInDirectory(String path) {
-        return 0;
+        long counter = 1;
+        File dir = new File("src/main/resources/" + path);
+        if (dir.isDirectory()) {
+            for (File file : dir.listFiles()){
+                if (file.isDirectory()){
+                    counter += countDirsInDirectory(path + "/" + file.getName());
+                }
+            }
+        }
+        return counter;
     }
 
     /**
@@ -32,9 +56,19 @@ public long countDirsInDirectory(String path) {
      */
     @Override
     public void copyTXTFiles(String from, String to) {
-        return;
+        File originalDir = new File(from);
+        File finalDir = new File(to);
+        if (!finalDir.exists()) {
+            finalDir.mkdir();
+        }
+        try {
+            Files.copy(originalDir.toPath(), finalDir.toPath(), REPLACE_EXISTING);
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
     }
 
+
     /**
      * Метод создает файл на диске с расширением txt
      *
@@ -44,6 +78,18 @@ public void copyTXTFiles(String from, String to) {
      */
     @Override
     public boolean createFile(String path, String name) {
+        File directory = new File(getClass().getResource("/").getPath() + "/" + path);
+
+        if (!directory.exists()) {
+            directory.mkdir();
+        }
+
+        File file = new File(directory + "/" + name);
+        try {
+            return file.createNewFile();
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
         return false;
     }
 
@@ -55,6 +101,13 @@ public boolean createFile(String path, String name) {
      */
     @Override
     public String readFileFromResources(String fileName) {
-        return null;
+        File file = new File("src/main/resources/", fileName);
+        try {
+            List<String> result = Files.readAllLines(file.toPath());
+            return result.get(0);
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+        return "";
     }
 }
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.math.RoundingMode;
 
 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 aNew = new BigDecimal(a);
+        BigDecimal bNew = new BigDecimal(b);
+        return aNew.divide(bNew, range, RoundingMode.HALF_UP);
     }
 
     /**
@@ -24,6 +27,10 @@ public BigDecimal getPrecisionNumber(int a, int b, int range) {
      */
     @Override
     public BigInteger getPrimaryNumber(int range) {
-        return null;
+        BigInteger primaryNumber = new BigInteger("2");
+        for(int i = 0; i < range; i++){
+            primaryNumber = primaryNumber.nextProbablePrime();
+        }
+        return primaryNumber;
     }
 }
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
@@ -2,7 +2,12 @@
 
 import java.time.LocalDate;
 import java.time.LocalDateTime;
+import java.time.Period;
+import java.time.Year;
 import java.time.format.DateTimeFormatter;
+import java.util.stream.IntStream;
+
+import static java.time.LocalDate.now;
 
 public class SimpleDateService implements DateService {
 
@@ -14,7 +19,7 @@ public class SimpleDateService implements DateService {
      */
     @Override
     public String parseDate(LocalDate localDate) {
-        return null;
+        return localDate.format(DateTimeFormatter.ofPattern("dd-MM-yyyy"));
     }
 
     /**
@@ -25,7 +30,7 @@ public String parseDate(LocalDate localDate) {
      */
     @Override
     public LocalDateTime parseString(String string) {
-        return null;
+        return LocalDateTime.parse(string, DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm"));
     }
 
     /**
@@ -37,7 +42,7 @@ public LocalDateTime parseString(String string) {
      */
     @Override
     public String convertToCustomFormat(LocalDate localDate, DateTimeFormatter formatter) {
-        return null;
+        return localDate.format(formatter);
     }
 
     /**
@@ -47,7 +52,11 @@ public String convertToCustomFormat(LocalDate localDate, DateTimeFormatter forma
      */
     @Override
     public long getNextLeapYear() {
-        return 0;
+        long year = now().getYear();
+        do {
+            year++;
+        } while (!Year.isLeap(year));
+        return year;
     }
 
     /**
@@ -57,7 +66,7 @@ public long getNextLeapYear() {
      */
     @Override
     public long getSecondsInYear(int year) {
-        return 0;
+        return (Year.isLeap(year) ? 3600 * 24 * 366 : 3600 * 24 * 365);
     }
 
 

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 +1,14 @@
 package com.epam.izh.rd.online.service;
 
+import java.io.BufferedReader;
+import java.io.File;
+import java.io.FileReader;
+import java.io.IOException;
+import java.nio.file.Files;
+import java.util.List;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
 public class SimpleRegExpService implements RegExpService {
 
     /**
@@ -11,6 +20,24 @@ public class SimpleRegExpService implements RegExpService {
      */
     @Override
     public String maskSensitiveData() {
+        File file = new File("src/main/resources", "sensitive_data.txt");
+        Pattern pattern = Pattern.compile("\\d{4}\\s(\\d{4}?)\\s(\\d{4}?)\\s\\d{4}");
+        Matcher matcher;
+        int counter = 0;
+        try {
+            List<String> result = Files.readAllLines(file.toPath());
+            while (counter < result.size()){
+                matcher = pattern.matcher(result.get(counter));
+                while (matcher.find()) {
+                    String[] parts = matcher.group().split(" ");
+                    result.set(counter, result.get(counter).replaceFirst(String.valueOf(pattern), parts[0] + " **** **** " + parts[parts.length - 1]));
+                }
+                counter++;
+            }
+            return result.get(0);
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
         return null;
     }
 
@@ -22,6 +49,21 @@ public String maskSensitiveData() {
      */
     @Override
     public String replacePlaceholders(double paymentAmount, double balance) {
-        return null;
+        String text = "";
+        try (BufferedReader reader = new BufferedReader(new FileReader("src/main/resources/sensitive_data.txt"))) {
+            text = reader.readLine();
+            Pattern pattern = Pattern.compile("\\$\\{.*?}");
+            Matcher matcher = pattern.matcher(text);
+            while (matcher.find()) {
+                if (matcher.group().equals("${payment_amount}")) {
+                    text = text.replaceAll("\\$\\{payment_amount}", String.valueOf((int)paymentAmount));
+                } else if (matcher.group().equals("${balance}")) {
+                    text = text.replaceAll("\\$\\{balance}", String.valueOf((int)balance));
+                }
+            }
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+        return text;
     }
 }
diff --git a/src/main/java/com/epam/izh/rd/online/service/SimpleTextService.java b/src/main/java/com/epam/izh/rd/online/service/SimpleTextService.java
@@ -1,5 +1,7 @@
 package com.epam.izh.rd.online.service;
 
+import java.util.Locale;
+
 public class SimpleTextService implements TextService {
 
     /**
@@ -13,7 +15,7 @@ public class SimpleTextService implements TextService {
      */
     @Override
     public String removeString(String base, String remove) {
-        return null; //TODO
+        return base.replaceAll(remove, "");
     }
 
     /**
@@ -24,7 +26,7 @@ public String removeString(String base, String remove) {
      */
     @Override
     public boolean isQuestionString(String text) {
-        return false; //TODO
+        return text.endsWith("?");
     }
 
     /**
@@ -35,7 +37,11 @@ public boolean isQuestionString(String text) {
      */
     @Override
     public String concatenate(String... elements) {
-        return null; //TODO
+        String newStr = "";
+        for (String str : elements) {
+            newStr = newStr.concat(str);
+        }
+        return newStr;
     }
 
     /**
@@ -47,7 +53,19 @@ public String concatenate(String... elements) {
      */
     @Override
     public String toJumpCase(String text) {
-        return null; //TODO
+        char[] def = text.toCharArray();
+        text = "";
+        boolean flag = true;
+        for (char ch : def){
+            if (flag) {
+                text += Character.toLowerCase(ch);
+                flag = false;
+            } else {
+                text += Character.toUpperCase(ch);
+                flag = true;
+            }
+        }
+        return text;
     }
 
     /**
@@ -59,6 +77,11 @@ public String toJumpCase(String text) {
      */
     @Override
     public boolean isPalindrome(String string) {
-       return false; //TODO
+        String raw = string.toLowerCase(Locale.ROOT).replace(" ", "").replace(",", "");
+        String palindrome = new StringBuilder(raw).reverse().toString();
+        if (raw.isEmpty()) {
+            return false;
+        }
+        return palindrome.equals(raw);
     }
 }
diff --git a/src/main/resources/testDirCreateFile/newFile.txt b/src/main/resources/testDirCreateFile/newFile.txt
diff --git a/src/main/resourcestestDirCreateFile/newFile.txt b/src/main/resourcestestDirCreateFile/newFile.txt
diff --git a/testDirCreateFile/newFile.txt b/testDirCreateFile/newFile.txt