diff --git a/src/Text.java b/src/Text.java
index e16e82b..ff35eb0 100644
--- a/src/Text.java
+++ b/src/Text.java
@@ -25,6 +25,14 @@ public class Text {
         }
     }
 
+    /**
+     * Method to check if a specific Paragraph exists
+     * @param paragraphNumber to number of the paragraph which should be checked
+     * @return returns true if the paragraph exists
+     */
+    private boolean paragraphExists(int paragraphNumber) {
+        return ((paragraphNumber > 0) && (paragraphNumber <= this.text.size()));
+    }
 
     /**
      * Method to add a paragraph at a specific position.
@@ -33,7 +41,7 @@ public class Text {
      * @return returns true if the given paragraph exists and is added successfully
      */
     public boolean add(int paragraphNumber, String text) {
-        if(paragraphNumber > 0 && (paragraphNumber <= this.text.size())) {
+        if(paragraphExists(paragraphNumber)) {
             this.text.add((paragraphNumber - 1), text);
             return true;
         }
@@ -75,7 +83,7 @@ public class Text {
      * @return returns true if the given paragraph exists and is changed successfully
      */
     public boolean replace(int paragraphNumber, String oldChar, String newChar) {
-        if(paragraphNumber > 0 && (paragraphNumber <= this.text.size())) {
+        if(paragraphExists(paragraphNumber)) {
             text.set((paragraphNumber - 1), text.get(paragraphNumber - 1).replace(oldChar, newChar));
             return true;
         }
@@ -95,7 +103,7 @@ public class Text {
 
 
     public boolean del(int paragraphNumber) {
-        if(paragraphNumber > 0 && (paragraphNumber <= this.text.size())) {
+        if(paragraphExists(paragraphNumber)) {
             //paragraph hier löschen.
             return true;
         }