java-online-course · Antasamsonov · Jun 26, 2020
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_9">
+    <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/pom.xml b/pom.xml
@@ -33,8 +33,8 @@
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-compiler-plugin</artifactId>
                 <configuration>
-                    <source>${java.version}</source>
-                    <target>${java.version}</target>
+                    <source>9</source>
+                    <target>9</target>
                 </configuration>
             </plugin>
         </plugins>

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 +1,18 @@
 package com.epam.izh.rd.online.repository;
 
+import java.io.BufferedReader;
+import java.io.File;
+import java.io.FileFilter;
+import java.io.IOException;
+import java.net.URL;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.Paths;
+import java.util.Arrays;
+import java.util.List;
+import java.util.Objects;
+import java.util.stream.Stream;
+
 public class SimpleFileRepository implements FileRepository {
 
     /**
@@ -10,9 +23,26 @@ public class SimpleFileRepository implements FileRepository {
      */
     @Override
     public long countFilesInDirectory(String path) {
-        return 0;
+        long count;
+        Path filePath = Paths.get(path);
+        File file;
+        if (filePath.isAbsolute()){
+            file = new File(path);
+        } else {
+            file = new File(Objects.requireNonNull(getClass().getClassLoader().getResource(path)).getFile());
+        }
+
+        count = new File(file.getPath()).listFiles(File::isFile).length;
+        List<File> directories = Arrays.asList(new File(file.getPath()).listFiles(File::isDirectory));
+        for (File directory : directories) {
+            count += countFilesInDirectory(directory.toPath().toString());
+
+        }
+
+        return count;
     }
 
+
     /**
      * Метод рекурсивно подсчитывает количество папок в директории, считая корень
      *
@@ -21,7 +51,23 @@ public long countFilesInDirectory(String path) {
      */
     @Override
     public long countDirsInDirectory(String path) {
-        return 0;
+        int count = 0;
+        Path filePath = Paths.get(path);
+        File file;
+        if (filePath.isAbsolute()){
+            file = new File(path);
+        } else {
+            count++;
+            file = new File(Objects.requireNonNull(getClass().getClassLoader().getResource(path)).getFile());
+        }
+
+        List<File> directories = Arrays.asList(Objects.requireNonNull(new File(file.getPath()).listFiles(File::isDirectory)));
+        count += directories.size();
+        for(File directory : directories) {
+            count += countDirsInDirectory(directory.toString());
+        }
+
+        return count;
     }
 
     /**
@@ -43,8 +89,22 @@ public void copyTXTFiles(String from, String to) {
      * @return был ли создан файл
      */
     @Override
-    public boolean createFile(String path, String name) {
+    public boolean createFile(String path, String name){
+        ClassLoader classLoader = getClass().getClassLoader();
+        URL resource = classLoader.getResource(path);
+        File file;
+        if (resource != null) {
+             file = new File(resource.getFile(), name);
+        } else {
+             file = new File("", name);
+        } //c
+        try{
+           return file.createNewFile();
+       } catch (IOException e){
+           System.out.println(e.getMessage());
+       }
         return false;
+
     }
 
     /**
@@ -55,6 +115,14 @@ public boolean createFile(String path, String name) {
      */
     @Override
     public String readFileFromResources(String fileName) {
-        return null;
+        File file = new File(Objects.requireNonNull(getClass().getClassLoader().getResource(fileName)).getFile());
+        String value = "";
+        try (BufferedReader reader = Files.newBufferedReader(file.toPath())) {
+            value = reader.readLine();
+        } catch (Exception e) {
+            System.err.println(e.getMessage());
+        }
+        return value;
+
     }
 }
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
@@ -3,6 +3,8 @@
 import java.math.BigDecimal;
 import java.math.BigInteger;
 
+import static java.math.BigDecimal.ROUND_DOWN;
+
 public class SimpleBigNumbersService implements BigNumbersService {
 
     /**
@@ -13,7 +15,9 @@ public class SimpleBigNumbersService implements BigNumbersService {
      */
     @Override
     public BigDecimal getPrecisionNumber(int a, int b, int range) {
-        return null;
+        BigDecimal devidend = BigDecimal.valueOf(a);
+        BigDecimal devider = BigDecimal.valueOf(b);
+        return devidend.divide(devider, range, ROUND_DOWN);
     }
 
     /**
@@ -24,6 +28,10 @@ public BigDecimal getPrecisionNumber(int a, int b, int range) {
      */
     @Override
     public BigInteger getPrimaryNumber(int range) {
-        return null;
+        BigInteger prime = BigInteger.valueOf(2);
+        for(int i = 0; i < range; i++) {
+            prime = prime.nextProbablePrime();
+        }
+        return prime;
     }
 }
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
@@ -3,6 +3,8 @@
 import java.time.LocalDate;
 import java.time.LocalDateTime;
 import java.time.format.DateTimeFormatter;
+import java.util.Calendar;
+
 
 public class SimpleDateService implements DateService {
 
@@ -14,7 +16,8 @@ public class SimpleDateService implements DateService {
      */
     @Override
     public String parseDate(LocalDate localDate) {
-        return null;
+        DateTimeFormatter formatter = DateTimeFormatter.ofPattern("dd-MM-yyyy");
+        return localDate.format(formatter);
     }
 
     /**
@@ -25,7 +28,8 @@ public String parseDate(LocalDate localDate) {
      */
     @Override
     public LocalDateTime parseString(String string) {
-        return null;
+        DateTimeFormatter formatter = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm");
+        return LocalDateTime.parse(string, formatter);
     }
 
     /**
@@ -37,7 +41,7 @@ public LocalDateTime parseString(String string) {
      */
     @Override
     public String convertToCustomFormat(LocalDate localDate, DateTimeFormatter formatter) {
-        return null;
+        return localDate.format(formatter);
     }
 
     /**
@@ -47,7 +51,9 @@ public String convertToCustomFormat(LocalDate localDate, DateTimeFormatter forma
      */
     @Override
     public long getNextLeapYear() {
-        return 0;
+        int year = Calendar.getInstance().get(Calendar.YEAR);
+
+        return year;
     }
 
     /**
@@ -57,7 +63,18 @@ public long getNextLeapYear() {
      */
     @Override
     public long getSecondsInYear(int year) {
-        return 0;
+        if (year %100==0 && year %400 ==0 )
+            return 31622400;
+
+        else if (year % 4 == 0 && year % 100 > 0)
+            return 31622400;
+
+        else if (year % 100 == 0)
+            return 31536000;
+
+        else
+            return 31536000;
+
     }
 
 

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 +1,13 @@
 package com.epam.izh.rd.online.service;
 
+import java.io.BufferedReader;
+import java.io.File;
+import java.nio.file.Files;
+import java.nio.file.Paths;
+import java.util.Objects;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
 public class SimpleRegExpService implements RegExpService {
 
     /**
@@ -11,7 +19,19 @@ public class SimpleRegExpService implements RegExpService {
      */
     @Override
     public String maskSensitiveData() {
-        return null;
+        String fileName = "D:/IdeaProjects/java-data-handling-template1/src/main/resources/sensitive_data.txt";
+        String value = "";
+        try (BufferedReader reader = Files.newBufferedReader(Paths.get(fileName))) {
+            value = reader.readLine();
+            Pattern pattern = Pattern.compile("(\\d{4}) (\\d{4}) (\\d{4}) (\\d{4})");
+            Matcher matcher = pattern.matcher(value);
+            if (matcher.find()) {
+                value = matcher.replaceAll("$1 **** **** $4");
+            }
+        } catch (Exception e) {
+            System.err.println(e.getMessage());
+        }
+        return value;
     }
 
     /**
@@ -22,6 +42,33 @@ public String maskSensitiveData() {
      */
     @Override
     public String replacePlaceholders(double paymentAmount, double balance) {
-        return null;
+        String value = readFile();
+        value = value.replaceAll("\\$\\{payment_amount}", format(paymentAmount));
+        value = value.replaceAll("\\$\\{balance}", format(balance));
+//            Pattern pattern = Pattern.compile("\\{\\D+?\\}");
+//            Matcher matcher = pattern.matcher(value);
+//            if (matcher.find()){
+//                    value = matcher.replaceAll(String.valueOf(paymentAmount));
+//                    value = matcher.replaceAll(String.valueOf(balance));
+//            }
+        return value;
+    }
+
+    private String readFile() {
+        File file = new File(Objects.requireNonNull(getClass().getClassLoader().getResource("sensitive_data.txt")).getFile());
+        String value = "";
+        try (BufferedReader reader = Files.newBufferedReader(file.toPath())) {
+            value = reader.readLine();
+        } catch (Exception e) {
+            System.err.println(e.getMessage());
+        }
+        return value;
+    }
+
+    private static String format(double d) {
+        if (d == (long) d)
+            return String.format("%d", (long) d);
+        else
+            return String.format("%s", d);
     }
 }