refactored Method name and added cutted Hashmap feature. Added new filter for filechooser

src/main/java/domain/FileManager.java

@@ -51,7 +51,10 @@ public class FileManager {
     public File loadFileGUI() {
         try {
             JFileChooser fileChooser = new JFileChooser();
-            fileChooser.setFileFilter(new FileNameExtensionFilter("PDF Files", "pdf"));
+            fileChooser.addChoosableFileFilter(new FileNameExtensionFilter("PDF Files", "pdf"));
+            fileChooser.addChoosableFileFilter(new FileNameExtensionFilter("Text Files", "txt"));
+            fileChooser.addChoosableFileFilter(new FileNameExtensionFilter("Word Documents", "docx"));
+            fileChooser.addChoosableFileFilter(new FileNameExtensionFilter("PowerPoint Presentations", "pptx"));
             int result = fileChooser.showOpenDialog(null);
 
             if (result == JFileChooser.APPROVE_OPTION) {
@@ -63,25 +66,24 @@ public class FileManager {
         }
     }
 
-    public boolean processFile(File inputFile){
-        boolean success = false;
+    public HashMap tokenizingText(File inputFile){
+        HashMap<String, Integer> filteredWords = new HashMap<>();
         try {
             PDDocument document = null;
-            HashMap<String, Integer> filteredWords = new HashMap<>();
             if(inputFile != null) {
                 document = PDDocument.load(inputFile);
                 PDFTextStripper pdfStripper = new PDFTextStripper();
                 String text = pdfStripper.getText(document);
-                String splittedText = "[,\\s\\.:/!§$%&/()=?+*~#.;_<>^°]";
+
+                //Tokenizing der Wörter
+                String splittedText = "[,\\s\\.:/!§$%&/()=?+*~#.;_<>^°\"']";
                 String[] textWords = text.split(splittedText);
                 for(String word : textWords){
-//                    if(Character.isLetter(word.charAt(0)) && Character.isLetter((word.charAt(word.length() - 1)))) {
                         if (filteredWords.containsKey(word)) {
                             filteredWords.compute(word, (k, counter) -> counter + 1);
                         }
-//                    }
                     else {
-                        filteredWords.put(word, 0);
+                        filteredWords.put(word, 1);
                     }
                 }
                 for(Map.Entry e : filteredWords.entrySet()){
@@ -91,11 +93,22 @@ public class FileManager {
                     document.close();
                 }
             }
-            success = true;
         } catch (Exception e){
             e.printStackTrace();
         }
-        return success;
+        return filteredWords;
+    }
+
+    public HashMap maxShowWords(int number, HashMap<String, Integer> words) {
+        HashMap <String, Integer> cuttedHashmap = new HashMap<>();
+        int index = number;
+        for (String word : words.keySet()) {
+            if(index > 0) {
+                cuttedHashmap.put(word, words.get(word));
+            }
+            index--;
+        }
+        return cuttedHashmap;
     }
 
     public void saveFile(){}

src/main/java/domain/PictureManager.java

@@ -1,4 +1,6 @@
 package domain;
 
 public class PictureManager {
+
+
 }

src/main/java/facade/WordCloudManager.java

@@ -6,6 +6,7 @@ import domain.PictureManager;
 import java.io.File;
 import java.io.FileNotFoundException;
 import java.io.OutputStream;
+import java.util.HashMap;
 
 public class WordCloudManager {
     FileManager fileManager;
@@ -17,10 +18,14 @@ public class WordCloudManager {
     }
 
     public boolean loadFileGUI() {
-        boolean success = false;
         File inputFile = fileManager.loadFileGUI();
-        success = fileManager.processFile(inputFile);
-        return success;
+        HashMap wordMap = fileManager.tokenizingText(inputFile);
+        if(wordMap == null) {
+            return false;
+        }
+        else {
+            return true;
+        }
     }
 
     public void loadFilePath() {

src/main/java/tui/TUI.java

@@ -32,6 +32,8 @@ public class TUI {
                     //Load File GUI
                     if(wcm.loadFileGUI()) {
                         System.out.println("File loaded successful!\n");
+                    } else {
+                        System.out.println("File cannot be loaded!\n");
                     }
                     break;
                 case (2):