finished CountWordsVisitor

src/uebung08/doc/Book.java

@@ -1,5 +1,6 @@
 package uebung08.doc;
 
+import java.util.ArrayList;
 import java.util.List;
 
 public class Book {
@@ -28,10 +29,22 @@ public class Book {
     }
 
     public String tableOfContents() {
-        return "";
+        List<String> res = new ArrayList<>();
+
+        for (TextComponent textComponent : content) {
+            res.addAll(textComponent.accept(new TableOfContentsVisitor()));
+        }
+
+        return res.toString();
     }
 
     public int countWordsByVisitor() {
-        return 0;
+        int count = 0;
+
+        for (TextComponent textComponent : content) {
+            count += textComponent.accept(new CountWordsVisitor());
+        }
+
+        return count;
     }
 }

src/uebung08/doc/CountWordsVisitor.java

@@ -2,10 +2,36 @@ package uebung08.doc;
 
 public class CountWordsVisitor implements Visitor<Integer>{
     
-    
-    @Override
-    public <T> Integer visit(TextComponent textComponent) {
-        image.accept(this);
+    public Integer visit(Image image) {
         return 0;
     }
+
+    public Integer visit(Paragraph paragraph) {
+        int wordcount = 0;
+        boolean isInWord = false;
+
+
+        for (int i = 0; i < paragraph.getText().length(); i++) {
+            if(Character.isAlphabetic(paragraph.getText().charAt(i))){
+                if (!isInWord) {
+                    wordcount++;
+                    isInWord = true;
+                }
+            } else {
+                isInWord = false;
+            }
+        }
+
+        return wordcount;
+    }
+
+    public Integer visit(Section section) {
+        int count = 0;
+        for (TextComponent textComponent : section.getContent()) {
+            count += textComponent.accept(this);
+        }
+
+        return count;
+    }
+
 }

src/uebung08/doc/Paragraph.java

@@ -28,6 +28,10 @@ public class Paragraph implements TextComponent {
         return wordcount;
     }
 
+    public String getText(){
+        return text;
+    }
+
     @Override
     public <T> T accept(Visitor<T> visitor) { return visitor.visit(this); }
 }

src/uebung08/doc/Section.java

@@ -20,6 +20,10 @@ public class Section implements TextComponent {
         return wordcount;
     }
 
+    public List<TextComponent> getContent() {
+        return content;
+    }
+
     @Override
     public <T> T accept(Visitor<T> visitor) { return visitor.visit(this); }
 }

src/uebung08/doc/TableOfContentsVisitor.java

@@ -0,0 +1,10 @@
+package uebung08.doc;
+
+import java.util.List;
+
+public class TableOfContentsVisitor implements Visitor<List<String>>{
+
+    public List<String> visit(Image image) {
+        
+    }
+}

src/uebung08/doc/Visitor.java

@@ -1,8 +1,7 @@
 package uebung08.doc;
 
 public interface Visitor<T> {
-    T visit(TextComponent textComponent);
-    T visit(Book book);
+
     T visit(Paragraph paragraph);
     T visit(Image image);
     T visit(Section section);