some refactoring and implement stemming

src/main/java/domain/TextProcessing.java

@@ -12,7 +12,6 @@ import org.apache.poi.xslf.usermodel.XSLFTextShape;
 import org.apache.lucene.analysis.standard.StandardAnalyzer;
 import org.apache.lucene.analysis.Analyzer;
 import org.apache.lucene.analysis.TokenStream;
-import org.apache.lucene.analysis.de.GermanStemmer;
 import org.apache.lucene.analysis.tokenattributes.CharTermAttribute;
 import org.apache.lucene.analysis.CharArraySet;
 
@@ -26,8 +25,8 @@ public class TextProcessing {
     private Set<String> stopwordList = new HashSet<>();
 
     public String formatToText(File file, String format) {
+        StringBuilder text = new StringBuilder();
         try {
-            StringBuilder text = new StringBuilder();
             if (file != null) {
                 switch (format) {
                     case "txt":
@@ -65,7 +64,7 @@ public class TextProcessing {
         catch (IOException e) {
             throw new RuntimeException(e);
         }
-        return "Nothing found!";
+        return text.toString();
     }
 
     public void textToSetStopwords(Map<String, Integer> words) {
@@ -113,7 +112,7 @@ public class TextProcessing {
         CharArraySet luceneStopwords = stopwordList != null ? new CharArraySet(stopwordList,
                 true) : CharArraySet.EMPTY_SET;
 
-        try (Analyzer analyzer = new StandardAnalyzer(luceneStopwords)) {
+        try (Analyzer analyzer = stemming ? new GermanAnalyzer(luceneStopwords) : new StandardAnalyzer(luceneStopwords)) {
             TokenStream tokenStream = analyzer.tokenStream(null, text);
             CharTermAttribute charTermAttribute = tokenStream.addAttribute(CharTermAttribute.class);
 

src/main/java/domain/WordCloudCreator.java

@@ -10,10 +10,6 @@ public class WordCloudCreator {
         File templateFile = new File("wordcloud.html"); // Template in project directory
         File outputFile = new File("createdHTML.html"); // Output in project directory
 
-        if (!templateFile.exists()) {
-            throw new RuntimeException("File not found!");
-        }
-
         try (BufferedReader reader = new BufferedReader(new FileReader(templateFile));
              BufferedWriter writer = new BufferedWriter(new FileWriter(outputFile))) {
 

src/main/java/tui/TUI.java

@@ -54,6 +54,8 @@ public class TUI {
                     scan.close();
                     System.out.println("Close Program!");
                     break;
+                default:
+                    System.out.println("Unknown input!");
             }
         }
         scan.close();
@@ -93,11 +95,14 @@ public class TUI {
                     break;
                 case(3):
                     // Set Stemming
-                    System.out.println("Stemming: Input 'yes' or 'no'? ");
+                    System.out.println("Activate stemming? Type 'yes' or 'no'?\nOnly German stemming!");
                     String stemmingOption = scan.nextLine();
                     if(stemmingOption.equals("yes")) {
                         wcm.setStemming(true);
                     }
+                    else {
+                        System.out.println("Unknown Input!");
+                    }
                     break;
                 case(4):
                     //Create WordCloud and exit program
@@ -110,6 +115,8 @@ public class TUI {
                         System.out.println("HTML FIle not created!\n");
                     }
                     break;
+                default:
+                    System.out.println("Unknown input!");
             }
         }
     }