readAndWrite

pom.xml

@@ -20,6 +20,14 @@
         </plugins>
     </build>
     <dependencies>
+        <!-- https://mvnrepository.com/artifact/org.apache.commons/commons-io -->
+        <dependency>
+            <groupId>org.apache.commons</groupId>
+            <artifactId>commons-io</artifactId>
+            <version>1.3.2</version>
+        </dependency>
+
+
         <dependency>
             <groupId>junit</groupId>
             <artifactId>junit</artifactId>

src/main/java/rocks/zipcode/AlphaCharDocument.java

@@ -1,6 +1,11 @@
 package rocks.zipcode;
 
+import com.sun.deploy.util.StringUtils;
+
+import java.io.FileWriter;
 import java.io.IOException;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
 
 /**
  * @author leon on 16/11/2018.
@@ -12,9 +17,22 @@ public class AlphaCharDocument extends Document {
 
     @Override
     public void write(String contentToBeWritten) {
+        if(isAlpha(contentToBeWritten)){
+        try {
+            FileWriter fileWriter = new FileWriter("target/file.txt");
+            fileWriter.write(contentToBeWritten);
+            fileWriter.flush();
+        } catch (IOException e){
+            e.printStackTrace();
+        }
+        }else{
+            throw new IllegalArgumentException();
+        }
     }
 
     private Boolean isAlpha(String s) {
-        return null;
+        Pattern pattern = Pattern.compile("[a-zA-Z]");
+        Matcher matcher = pattern.matcher(s);
+        return matcher.find();
     }
 }

src/main/java/rocks/zipcode/Document.java

@@ -1,9 +1,17 @@
 package rocks.zipcode;
 
+import org.apache.commons.io.FileUtils;
+
 import java.io.*;
+import java.net.URI;
+import java.nio.charset.StandardCharsets;
 import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.Paths;
+import java.nio.file.StandardOpenOption;
 import java.util.Arrays;
 import java.util.List;
+import java.util.stream.Stream;
 
 /**
  * @author leon on 16/11/2018.
@@ -24,28 +32,64 @@ public class Document implements DocumentInterface {
 
     @Override
     public void write(String contentToBeWritten) {
+        try {
+            fileWriter.write(contentToBeWritten);
+            fileWriter.flush();
+        } catch (IOException e){
+            e.printStackTrace();
+        }
     }
 
     @Override
     public void write(Integer lineNumber, String valueToBeWritten) {
+        try {
+            Path path = Paths.get("target/file.txt");
+            List<String> lines = Files.readAllLines(path, StandardCharsets.UTF_8);
+            lines.set(lineNumber , valueToBeWritten);
+            Files.write(path, lines.subList(0, lines.size()-1), StandardCharsets.UTF_8);
+            Files.write(path, lines.get(lines.size()-1).getBytes("UTF-8"), StandardOpenOption.APPEND);
+        } catch (IOException e){
+            e.printStackTrace();
+        }
     }
 
     @Override
-    public String read(Integer lineNumber) {
-        return null;
+    public String read(Integer lineNumber) throws IOException {
+        return Files.readAllLines(file.toPath()).get(lineNumber);
     }
 
     @Override
-    public String read() {
-        return null;
+    public String read() throws IOException{
+
+            return new String(Files.readAllBytes(Paths.get(file.getAbsolutePath())));
+
     }
 
     @Override
     public void replaceAll(String stringToReplace, String replacementString) {
+        try {
+            Path path = Paths.get("/Users/zavonmalone/labs/exceptions-readandwrite/target/file.txt");
+            String content = new String(Files.readAllBytes(path),StandardCharsets.UTF_8);
+            content = content.replaceAll(stringToReplace, replacementString);
+            Files.write(path, content.getBytes(StandardCharsets.UTF_8));
+
+        }catch(IOException e){
+            e.printStackTrace();
+        }
+
     }
 
     @Override
     public void overWrite(String content) {
+        try {
+            Path path = Paths.get("target/file.txt");
+            List<String> lines = Files.readAllLines(path, StandardCharsets.UTF_8);
+            lines.clear();
+            lines.add(content);
+            Files.write(path, lines.subList(0, lines.size()-1), StandardCharsets.UTF_8);
+            Files.write(path, lines.get(lines.size()-1).getBytes("UTF-8"), StandardOpenOption.APPEND);        } catch (IOException e) {
+            e.printStackTrace();
+        }
     }
 
     public List<String> toList() {
@@ -54,11 +98,17 @@ public class Document implements DocumentInterface {
 
     @Override
     public File getFile() {
+        Path path = Paths.get("/Users/zavonmalone/labs/exceptions-readandwrite/target/file.txt");
         return null;
     }
 
     @Override
     public String toString() {
+        try {
+            return file.toString() + "{" +read() + "}";
+        }catch(IOException e){
+            e.printStackTrace();
+        }
         return null;
     }
 }

src/main/java/rocks/zipcode/DocumentInterface.java

@@ -1,6 +1,8 @@
 package rocks.zipcode;
 
 import java.io.File;
+import java.io.FileNotFoundException;
+import java.io.IOException;
 import java.util.List;
 
 /**
@@ -11,9 +13,9 @@ public interface DocumentInterface {
 
     void write(Integer lineNumber, String valueToBeWritten);
 
-    String read(Integer lineNumber);
+    String read(Integer lineNumber) throws FileNotFoundException, IOException;
 
-    String read();
+    String read() throws IOException;
 
     void replaceAll(String stringToReplace, String replacementString);
 

src/main/java/rocks/zipcode/NumericCharDocument.java

@@ -1,6 +1,8 @@
 package rocks.zipcode;
 
 import java.io.IOException;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
 
 /**
  * @author leon on 16/11/2018.
@@ -12,9 +14,16 @@ public class NumericCharDocument extends Document {
 
     @Override
     public void write(String contentToBeWritten) {
+        if(isNumeric(contentToBeWritten)){
+            super.write(contentToBeWritten);
+        }else{
+            throw new IllegalArgumentException();
+        }
     }
 
     private Boolean isNumeric(String s) {
-        return null;
+        Pattern pattern = Pattern.compile("[0-9]");
+        Matcher matcher = pattern.matcher(s);
+        return matcher.find();
     }
 }

src/main/java/rocks/zipcode/SpecialCharDocument.java

@@ -1,6 +1,8 @@
 package rocks.zipcode;
 
 import java.io.IOException;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
 
 /**
  * @author leon on 18/11/2018.
@@ -12,9 +14,16 @@ public class SpecialCharDocument extends Document {
 
     @Override
     public void write(String contentToBeWritten) {
+    if(isSpecialCharacters(contentToBeWritten)){
+        super.write(contentToBeWritten);
+    }else{
+        throw new IllegalArgumentException();
+    }
     }
 
     private Boolean isSpecialCharacters(String s) {
-        return null;
+        Pattern pattern = Pattern.compile("[^\\w\\s]");
+        Matcher matcher = pattern.matcher(s);
+        return matcher.find();
     }
 }