java-online-course · AlexeyKorepanov · Dec 18, 2020 · Feb 8, 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.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.Paths;
+
+
 public class SimpleFileRepository implements FileRepository {
 
     /**
@@ -10,7 +17,17 @@ public class SimpleFileRepository implements FileRepository {
      */
     @Override
     public long countFilesInDirectory(String path) {
-        return 0;
+        long sum = 0 ;
+
+        File[] files = new File("./src/main/resources/" + path).listFiles() ;
+
+        for (File file : files ) {
+            if(file.isFile())
+                sum++;
+            else
+                sum+= countFilesInDirectory(path + "/" + file.getName());
+        }
+        return sum;
     }
 
     /**
@@ -21,7 +38,15 @@ public long countFilesInDirectory(String path) {
      */
     @Override
     public long countDirsInDirectory(String path) {
-        return 0;
+        long sum = 1 ;
+
+        File[] files = new File("./src/main/resources/" + path).listFiles() ;
+
+        for (File file : files ) {
+            if(file.isDirectory())
+               sum+= countDirsInDirectory(path + "/" + file.getName());
+        }
+        return sum;
     }
 
     /**
@@ -32,7 +57,26 @@ public long countDirsInDirectory(String path) {
      */
     @Override
     public void copyTXTFiles(String from, String to) {
-        return;
+        Path file = Paths.get(from) ;
+        Path fileName = file.getFileName() ;
+        System.out.println(fileName);
+        Path fileCopy = Paths.get(to) ;
+        System.out.println(fileCopy);
+        System.out.println(fileName.toString().endsWith(".txt"));
+        Path directory = fileCopy.getParent() ;
+        try {
+             Files.createDirectories(directory) ;
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+        System.out.println(Files.exists(Paths.get(String.valueOf(directory))));
+
+
+        try {
+            Files.copy(file, fileCopy) ;
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
     }
 
     /**
@@ -44,7 +88,21 @@ public void copyTXTFiles(String from, String to) {
      */
     @Override
     public boolean createFile(String path, String name) {
-        return false;
+        try {
+            Path pathAbs = Paths.get(this.getClass().getProtectionDomain().getCodeSource().getLocation().toURI()) ;
+            path = pathAbs.toString() + "/" + path ;
+        } catch (URISyntaxException e) {
+            e.printStackTrace();
+        }
+        File fold = new File(path) ;
+        File file = new File(path + "/" + name) ;
+        fold.mkdir() ;
+        try {
+            file.createNewFile() ;
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+        return file.exists() ;
     }
 
     /**
@@ -55,6 +113,16 @@ public boolean createFile(String path, String name) {
      */
     @Override
     public String readFileFromResources(String fileName) {
-        return null;
+        try (FileReader con = new FileReader("src/main/resources/" + fileName)){
+            BufferedReader content = new BufferedReader (con) ;
+            String text = content.readLine();
+            return text;
+        } catch (FileNotFoundException e) {
+            e.printStackTrace();
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+        return null ;
+
     }
 }
diff --git a/src/main/java/com/epam/izh/rd/online/service/DateService.java b/src/main/java/com/epam/izh/rd/online/service/DateService.java
@@ -1,14 +1,14 @@
 package com.epam.izh.rd.online.service;
 
 import java.time.LocalDate;
-import java.time.LocalDateTime;
 import java.time.format.DateTimeFormatter;
+import java.time.temporal.TemporalAccessor;
 
 public interface DateService {
 
     String parseDate(LocalDate localDate);
 
-    LocalDateTime parseString(String string);
+    TemporalAccessor parseString(String string);
 
     String convertToCustomFormat(LocalDate localDate, DateTimeFormatter formatter);
 

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 +14,8 @@ public class SimpleBigNumbersService implements BigNumbersService {
      */
     @Override
     public BigDecimal getPrecisionNumber(int a, int b, int range) {
-        return null;
+        BigDecimal result = new BigDecimal(a).divide(new BigDecimal(b),2, RoundingMode.HALF_UP) ;
+        return result;
     }
 
     /**
@@ -24,6 +26,10 @@ public BigDecimal getPrecisionNumber(int a, int b, int range) {
      */
     @Override
     public BigInteger getPrimaryNumber(int range) {
-        return null;
+        BigInteger result = new BigInteger("2") ;
+        for (int i = 1; i<=range ; i++){
+           result = result.nextProbablePrime();
+       }
+        return result;
     }
 }
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 +15,8 @@ public class SimpleDateService implements DateService {
      */
     @Override
     public String parseDate(LocalDate localDate) {
-        return null;
+        DateTimeFormatter format = DateTimeFormatter.ofPattern("dd-MM-yyyy") ;
+        return format.format(localDate);
     }
 
     /**
@@ -25,7 +27,8 @@ public String parseDate(LocalDate localDate) {
      */
     @Override
     public LocalDateTime parseString(String string) {
-        return null;
+        DateTimeFormatter format = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm");
+        return LocalDateTime.parse(string,format);
     }
 
     /**
@@ -37,7 +40,7 @@ public LocalDateTime parseString(String string) {
      */
     @Override
     public String convertToCustomFormat(LocalDate localDate, DateTimeFormatter formatter) {
-        return null;
+        return formatter.format(localDate);
     }
 
     /**
@@ -47,6 +50,9 @@ public String convertToCustomFormat(LocalDate localDate, DateTimeFormatter forma
      */
     @Override
     public long getNextLeapYear() {
+        for(int i = 2021; i<2025;i++){
+            if(Year.of(i).isLeap()) return i ;
+        }
         return 0;
     }
 
@@ -57,7 +63,7 @@ public long getNextLeapYear() {
      */
     @Override
     public long getSecondsInYear(int year) {
-        return 0;
+        return LocalDate.of(year,1,1).lengthOfYear()*3600*24;
     }
 
 

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.*;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.Paths;
+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;
+
+        try (FileReader con = new FileReader("src/main/resources/sensitive_data.txt")){
+            BufferedReader cont = new BufferedReader (con) ;
+            String text = cont.readLine();
+            StringBuilder file = new StringBuilder(text);
+            Pattern pat = Pattern.compile("\\s*\\d{4}\\s+(\\d{4}\\s+\\d{4})\\s+\\d{4}") ;
+            Matcher mat = pat.matcher(file) ;
+            while (mat.find()) {
+                file.replace(mat.start(1),mat.end(1),"**** ****") ;
+            }
+            return file.toString();
+        } catch (FileNotFoundException e) {
+            e.printStackTrace();
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+        return null ;
     }
 
     /**
@@ -22,6 +45,17 @@ public String maskSensitiveData() {
      */
     @Override
     public String replacePlaceholders(double paymentAmount, double balance) {
-        return null;
+        String payment = "${payment_amount}";
+        String balance1 = "${balance}";
+        String pay = String.valueOf((int)paymentAmount);
+        String bal = String.valueOf((int)balance) ;
+        Path path = Paths.get("src/main/resources/sensitive_data.txt");
+        try {
+          String path1 = new String(Files.readAllBytes(path)).replace(payment,pay).replace(balance1,bal) ;
+           return path1;
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+        return null ;
     }
 }
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
@@ -13,7 +13,7 @@ public class SimpleTextService implements TextService {
      */
     @Override
     public String removeString(String base, String remove) {
-        return null; //TODO
+        return base.replaceAll(remove,""); //TODO
     }
 
     /**
@@ -24,7 +24,7 @@ public String removeString(String base, String remove) {
      */
     @Override
     public boolean isQuestionString(String text) {
-        return false; //TODO
+        return text.endsWith("?") ; //TODO
     }
 
     /**
@@ -35,7 +35,11 @@ public boolean isQuestionString(String text) {
      */
     @Override
     public String concatenate(String... elements) {
-        return null; //TODO
+        StringBuilder text = new StringBuilder();
+        for (String element: elements ) {
+            text.append(element);
+        }
+        return text.toString(); //TODO
     }
 
     /**
@@ -47,7 +51,15 @@ public String concatenate(String... elements) {
      */
     @Override
     public String toJumpCase(String text) {
-        return null; //TODO
+        char [] jump = text.toCharArray() ;
+        for (int i = 0 ; i < text.length() ; i++ ){
+            if ((i+2)%2 ==0) {
+                jump[i] = Character.toLowerCase(text.charAt(i)) ;
+            } else {
+                jump[i] = Character.toUpperCase(text.charAt(i)) ;
+            }
+        }
+        return new String(jump); //TODO
     }
 
     /**
@@ -59,6 +71,8 @@ public String toJumpCase(String text) {
      */
     @Override
     public boolean isPalindrome(String string) {
-       return false; //TODO
+     StringBuilder revString = new StringBuilder(string.replaceAll(" ","")).reverse() ;
+
+        return string.replaceAll(" ","").equalsIgnoreCase(String.valueOf(revString))&&!string.equals(""); //TODO
     }
 }
diff --git a/src/main/resources/sensitive_data.txt b/src/main/resources/sensitive_data.txt
@@ -1 +1 @@
-Вчера вечером со счета номер 4301 0234 2145 2140 был совершен перевод на счет 5042 2012 0532 2043 в размере ${payment_amount} рублей. На счету осталось ${balance} рублей
+Вчера вечером со счета номер 4301 0234 2145 2140 был совершен перевод на счет 5042 2012 0532 2043 в размере ${payment_amount} рублей. На счету осталось ${balance} рублей
Original file line number	Diff line number	Diff line change
		@@ -1 +1 @@
		Вчера вечером со счета номер 4301 0234 2145 2140 был совершен перевод на счет 5042 2012 0532 2043 в размере ${payment_amount} рублей. На счету осталось ${balance} рублей
		Вчера вечером со счета номер 4301 0234 2145 2140 был совершен перевод на счет 5042 2012 0532 2043 в размере ${payment_amount} рублей. На счету осталось ${balance} рублей