diff --git a/de.hhn.ai.prog2.blatt7.junit/.idea/workspace.xml b/de.hhn.ai.prog2.blatt7.junit/.idea/workspace.xml
index d97f2d5..7f02a95 100644
--- a/de.hhn.ai.prog2.blatt7.junit/.idea/workspace.xml
+++ b/de.hhn.ai.prog2.blatt7.junit/.idea/workspace.xml
@@ -2,43 +2,9 @@
 <project version="4">
   <component name="ChangeListManager">
     <list default="true" id="ce5d9264-6543-4dfb-9894-4df6c2616d5e" name="Default" comment="">
-      <change beforePath="$PROJECT_DIR$/.idea/misc.xml" beforeDir="false" afterPath="$PROJECT_DIR$/.idea/misc.xml" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/../de.hhn.ai.prog2.blatt8.internationalisierung/src/locale_de_DE.properties" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/../de.hhn.ai.prog2.blatt8.internationalisierung/src/locale_en.properties" afterDir="false" />
       <change beforePath="$PROJECT_DIR$/.idea/workspace.xml" beforeDir="false" afterPath="$PROJECT_DIR$/.idea/workspace.xml" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/PizzaProject.iml" beforeDir="false" afterPath="$PROJECT_DIR$/PizzaProject.iml" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/out/production/PizzaProject/model/Order$OrderState.class" beforeDir="false" afterPath="$PROJECT_DIR$/out/production/PizzaProject/model/Order$OrderState.class" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/out/production/PizzaProject/model/Order.class" beforeDir="false" afterPath="$PROJECT_DIR$/out/production/PizzaProject/model/Order.class" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/out/production/PizzaProject/model/Pizza$Size.class" beforeDir="false" afterPath="$PROJECT_DIR$/out/production/PizzaProject/model/Pizza$Size.class" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/out/production/PizzaProject/model/Pizza$Toppings.class" beforeDir="false" afterPath="$PROJECT_DIR$/out/production/PizzaProject/model/Pizza$Toppings.class" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/out/production/PizzaProject/model/Pizza.class" beforeDir="false" afterPath="$PROJECT_DIR$/out/production/PizzaProject/model/Pizza.class" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/out/production/PizzaProject/services/dummy/PizzaServiceDummy.class" beforeDir="false" afterPath="$PROJECT_DIR$/out/production/PizzaProject/services/dummy/PizzaServiceDummy.class" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/out/production/PizzaProject/services/impl/OrderService.class" beforeDir="false" afterPath="$PROJECT_DIR$/out/production/PizzaProject/services/impl/OrderService.class" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/out/production/TestGPI2/model/Order$OrderState.class" beforeDir="false" />
-      <change beforePath="$PROJECT_DIR$/out/production/TestGPI2/model/Order.class" beforeDir="false" />
-      <change beforePath="$PROJECT_DIR$/out/production/TestGPI2/model/Pizza$Size.class" beforeDir="false" />
-      <change beforePath="$PROJECT_DIR$/out/production/TestGPI2/model/Pizza$Toppings.class" beforeDir="false" />
-      <change beforePath="$PROJECT_DIR$/out/production/TestGPI2/model/Pizza.class" beforeDir="false" />
-      <change beforePath="$PROJECT_DIR$/out/production/TestGPI2/model/exceptions/OrderException.class" beforeDir="false" />
-      <change beforePath="$PROJECT_DIR$/out/production/TestGPI2/services/dummy/PizzaServiceDummy.class" beforeDir="false" />
-      <change beforePath="$PROJECT_DIR$/out/production/TestGPI2/services/impl/OrderService.class" beforeDir="false" />
-      <change beforePath="$PROJECT_DIR$/out/production/TestGPI2/services/impl/PizzaService.class" beforeDir="false" />
-      <change beforePath="$PROJECT_DIR$/out/production/TestGPI2/services/interfaces/IPizzaService.class" beforeDir="false" />
-      <change beforePath="$PROJECT_DIR$/out/production/TestGPI2/services/io/PizzaIOHandler.class" beforeDir="false" />
-      <change beforePath="$PROJECT_DIR$/out/production/TestGPI2/view/MainFrame.class" beforeDir="false" />
-      <change beforePath="$PROJECT_DIR$/out/production/TestGPI2/view/PizzaConfiguratorPanel.class" beforeDir="false" />
-      <change beforePath="$PROJECT_DIR$/out/production/TestGPI2/view/PizzaListPanel.class" beforeDir="false" />
-      <change beforePath="$PROJECT_DIR$/out/test/PizzaProject/model/OrderTest.class" beforeDir="false" afterPath="$PROJECT_DIR$/out/test/PizzaProject/model/OrderTest.class" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/out/test/PizzaProject/model/PizzaTest.class" beforeDir="false" afterPath="$PROJECT_DIR$/out/test/PizzaProject/model/PizzaTest.class" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/out/test/PizzaProject/services/OrderServiceTest.class" beforeDir="false" afterPath="$PROJECT_DIR$/out/test/PizzaProject/services/OrderServiceTest.class" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/out/test/TestGPI2/model/OrderTest.class" beforeDir="false" />
-      <change beforePath="$PROJECT_DIR$/out/test/TestGPI2/model/PizzaTest.class" beforeDir="false" />
-      <change beforePath="$PROJECT_DIR$/out/test/TestGPI2/services/OrderServiceTest.class" beforeDir="false" />
-      <change beforePath="$PROJECT_DIR$/src/model/Order.java" beforeDir="false" afterPath="$PROJECT_DIR$/src/model/Order.java" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/src/model/Pizza.java" beforeDir="false" afterPath="$PROJECT_DIR$/src/model/Pizza.java" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/src/services/dummy/PizzaServiceDummy.java" beforeDir="false" afterPath="$PROJECT_DIR$/src/services/dummy/PizzaServiceDummy.java" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/src/services/impl/OrderService.java" beforeDir="false" afterPath="$PROJECT_DIR$/src/services/impl/OrderService.java" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/tests/model/OrderTest.java" beforeDir="false" afterPath="$PROJECT_DIR$/tests/model/OrderTest.java" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/tests/model/PizzaTest.java" beforeDir="false" afterPath="$PROJECT_DIR$/tests/model/PizzaTest.java" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/tests/services/OrderServiceTest.java" beforeDir="false" afterPath="$PROJECT_DIR$/tests/services/OrderServiceTest.java" afterDir="false" />
     </list>
     <ignored path="$PROJECT_DIR$/out/" />
     <option name="EXCLUDED_CONVERTED_TO_IGNORED" value="true" />
@@ -57,7 +23,7 @@
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             <entry file="file://$PROJECT_DIR$/tests/model/PizzaTest.java">
               <provider selected="true" editor-type-id="text-editor">
-                <state relative-caret-position="767">
+                <state relative-caret-position="705">
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                   <folding>
                     <element signature="imports" expanded="true" />
@@ -74,8 +40,11 @@
                 <state relative-caret-position="495">
                   <caret line="42" selection-start-line="42" selection-end-line="42" />
                   <folding>
+                    <element signature="e#1817#1818#0" expanded="true" />
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+                    <element signature="e#1901#1902#0" expanded="true" />
                     <element signature="e#1930#1931#0" expanded="true" />
+                    <element signature="e#1992#1993#0" expanded="true" />
                     <element signature="e#2043#2044#0" expanded="true" />
                   </folding>
                 </state>
@@ -85,7 +54,7 @@
           <file pinned="false" current-in-tab="false">
             <entry file="file://$PROJECT_DIR$/tests/model/OrderTest.java">
               <provider selected="true" editor-type-id="text-editor">
-                <state relative-caret-position="1200">
+                <state relative-caret-position="1110">
                   <caret line="80" column="40" selection-start-line="80" selection-start-column="40" selection-end-line="80" selection-end-column="40" />
                   <folding>
                     <element signature="imports" expanded="true" />
@@ -97,7 +66,7 @@
           <file pinned="false" current-in-tab="true">
             <entry file="file://$PROJECT_DIR$/tests/services/OrderServiceTest.java">
               <provider selected="true" editor-type-id="text-editor">
-                <state relative-caret-position="842">
+                <state relative-caret-position="945">
                   <caret line="75" column="22" selection-start-line="75" selection-start-column="22" selection-end-line="75" selection-end-column="22" />
                 </state>
               </provider>
@@ -106,22 +75,14 @@
         </leaf>
       </split-first>
       <split-second>
-        <leaf>
+        <leaf SIDE_TABS_SIZE_LIMIT_KEY="225">
           <file pinned="false" current-in-tab="false">
             <entry file="file://$PROJECT_DIR$/src/model/Pizza.java">
               <provider selected="true" editor-type-id="text-editor">
-                <state relative-caret-position="692">
+                <state relative-caret-position="1245">
                   <caret line="100" column="5" selection-start-line="100" selection-start-column="5" selection-end-line="100" selection-end-column="5" />
                   <folding>
                     <element signature="imports" expanded="true" />
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-                    <element signature="e#821#822#0" expanded="true" />
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-                    <element signature="e#877#878#0" expanded="true" />
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-                    <element signature="e#1978#1979#0" expanded="true" />
-                    <element signature="e#2017#2018#0" expanded="true" />
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@@ -130,7 +91,7 @@
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             <entry file="file://$PROJECT_DIR$/src/model/Order.java">
               <provider selected="true" editor-type-id="text-editor">
-                <state relative-caret-position="752">
+                <state relative-caret-position="1320">
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                   <folding>
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@@ -142,15 +103,13 @@
           <file pinned="false" current-in-tab="true">
             <entry file="file://$PROJECT_DIR$/src/services/impl/OrderService.java">
               <provider selected="true" editor-type-id="text-editor">
-                <state relative-caret-position="435">
+                <state relative-caret-position="405">
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                   <folding>
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                     <element signature="e#310#311#0" expanded="true" />
-                    <element signature="e#379#380#0" expanded="true" />
-                    <element signature="e#407#408#0" expanded="true" />
+                    <element signature="e#416#417#0" expanded="true" />
                     <element signature="e#448#449#0" expanded="true" />
-                    <element signature="e#469#470#0" expanded="true" />
                   </folding>
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@@ -204,7 +163,7 @@
     <detection-done>true</detection-done>
     <sorting>DEFINITION_ORDER</sorting>
   </component>
-  <component name="ProjectFrameBounds" extendedState="6">
+  <component name="ProjectFrameBounds">
     <option name="x" value="1280" />
     <option name="width" value="2560" />
     <option name="height" value="1410" />
@@ -435,10 +394,10 @@
     </configuration>
     <list>
       <item itemvalue="Application.Order" />
+      <item itemvalue="JUnit.OrderServiceTest" />
       <item itemvalue="JUnit.OrderTest" />
       <item itemvalue="JUnit.PizzaTest" />
       <item itemvalue="JUnit.PizzaTest.removeTopping" />
-      <item itemvalue="JUnit.OrderServiceTest" />
     </list>
     <recent_temporary>
       <list>
@@ -474,9 +433,6 @@
     <servers />
   </component>
   <component name="TestHistory">
-    <history-entry file="OrderTest - 2019.06.27 at 18h 03m 27s.xml">
-      <configuration name="OrderTest" configurationId="JUnit" />
-    </history-entry>
     <history-entry file="OrderTest - 2019.06.27 at 18h 05m 40s.xml">
       <configuration name="OrderTest" configurationId="JUnit" />
     </history-entry>
@@ -504,15 +460,17 @@
     <history-entry file="OrderServiceTest - 2019.06.27 at 18h 22m 57s.xml">
       <configuration name="OrderServiceTest" configurationId="JUnit" />
     </history-entry>
+    <history-entry file="OrderServiceTest - 2019.06.27 at 18h 24m 57s.xml">
+      <configuration name="OrderServiceTest" configurationId="JUnit" />
+    </history-entry>
   </component>
   <component name="TimeTrackingManager">
     <option name="totallyTimeSpent" value="21861000" />
   </component>
   <component name="ToolWindowManager">
-    <frame x="1280" y="0" width="2560" height="1410" extended-state="6" />
-    <editor active="true" />
+    <frame x="1280" y="0" width="2560" height="1410" extended-state="0" />
     <layout>
-      <window_info content_ui="combo" id="Project" order="0" visible="true" weight="0.12619048" />
+      <window_info content_ui="combo" id="Project" order="0" visible="true" weight="0.12708499" />
       <window_info id="Structure" order="1" weight="0.25" />
       <window_info id="Image Layers" order="2" />
       <window_info id="Designer" order="3" />
@@ -521,7 +479,7 @@
       <window_info id="Favorites" order="6" side_tool="true" />
       <window_info anchor="bottom" id="Message" order="0" />
       <window_info anchor="bottom" id="Find" order="1" />
-      <window_info active="true" anchor="bottom" id="Run" order="2" visible="true" weight="0.28892332" />
+      <window_info anchor="bottom" id="Run" order="2" weight="0.28892332" />
       <window_info anchor="bottom" id="Debug" order="3" weight="0.4" />
       <window_info anchor="bottom" id="Cvs" order="4" weight="0.25" />
       <window_info anchor="bottom" id="Inspection" order="5" weight="0.4" />
@@ -640,27 +598,10 @@
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-          <caret line="100" column="5" selection-start-line="100" selection-start-column="5" selection-end-line="100" selection-end-column="5" />
-          <folding>
-            <element signature="imports" expanded="true" />
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-            <element signature="e#821#822#0" expanded="true" />
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-            <element signature="e#2017#2018#0" expanded="true" />
-          </folding>
-        </state>
-      </provider>
-    </entry>
+    <entry file="file://$PROJECT_DIR$/src/services/Date.java" />
     <entry file="file://$PROJECT_DIR$/tests/model/PizzaTest.java">
       <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="767">
+        <state relative-caret-position="705">
           <caret line="54" selection-start-line="54" selection-end-line="54" />
           <folding>
             <element signature="imports" expanded="true" />
@@ -675,33 +616,19 @@
         <state relative-caret-position="495">
           <caret line="42" selection-start-line="42" selection-end-line="42" />
           <folding>
+            <element signature="e#1817#1818#0" expanded="true" />
             <element signature="e#1846#1847#0" expanded="true" />
+            <element signature="e#1901#1902#0" expanded="true" />
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+            <element signature="e#1992#1993#0" expanded="true" />
             <element signature="e#2043#2044#0" expanded="true" />
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-    <entry file="file://$PROJECT_DIR$/src/services/Date.java">
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-    <entry file="file://$PROJECT_DIR$/src/model/Order.java">
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     <entry file="file://$PROJECT_DIR$/tests/model/OrderTest.java">
       <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="1200">
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           <folding>
             <element signature="imports" expanded="true" />
@@ -709,28 +636,46 @@
         </state>
       </provider>
     </entry>
+    <entry file="file://$PROJECT_DIR$/tests/services/OrderServiceTest.java">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="945">
+          <caret line="75" column="22" selection-start-line="75" selection-start-column="22" selection-end-line="75" selection-end-column="22" />
+        </state>
+      </provider>
+    </entry>
+    <entry file="file://$PROJECT_DIR$/src/model/Pizza.java">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="1245">
+          <caret line="100" column="5" selection-start-line="100" selection-start-column="5" selection-end-line="100" selection-end-column="5" />
+          <folding>
+            <element signature="imports" expanded="true" />
+          </folding>
+        </state>
+      </provider>
+    </entry>
+    <entry file="file://$PROJECT_DIR$/src/model/Order.java">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="1320">
+          <caret line="102" column="7" selection-start-line="102" selection-start-column="7" selection-end-line="102" selection-end-column="7" />
+          <folding>
+            <element signature="imports" expanded="true" />
+          </folding>
+        </state>
+      </provider>
+    </entry>
     <entry file="file://$PROJECT_DIR$/src/services/impl/OrderService.java">
       <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="435">
+        <state relative-caret-position="405">
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             <element signature="e#310#311#0" expanded="true" />
-            <element signature="e#379#380#0" expanded="true" />
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+            <element signature="e#416#417#0" expanded="true" />
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diff --git a/de.hhn.ai.prog2.blatt8.internationalisierung/.classpath b/de.hhn.ai.prog2.blatt8.internationalisierung/.classpath
new file mode 100644
index 0000000..51a8bba
--- /dev/null
+++ b/de.hhn.ai.prog2.blatt8.internationalisierung/.classpath
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<classpath>
+	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-1.8"/>
+	<classpathentry kind="src" path="src"/>
+	<classpathentry kind="output" path="bin"/>
+</classpath>
diff --git a/de.hhn.ai.prog2.blatt8.internationalisierung/.idea/misc.xml b/de.hhn.ai.prog2.blatt8.internationalisierung/.idea/misc.xml
new file mode 100644
index 0000000..44ae3bd
--- /dev/null
+++ b/de.hhn.ai.prog2.blatt8.internationalisierung/.idea/misc.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_1_8" default="false" project-jdk-name="1.8" project-jdk-type="JavaSDK">
+    <output url="file://$PROJECT_DIR$/classes" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/de.hhn.ai.prog2.blatt8.internationalisierung/.idea/modules.xml b/de.hhn.ai.prog2.blatt8.internationalisierung/.idea/modules.xml
new file mode 100644
index 0000000..23eadb5
--- /dev/null
+++ b/de.hhn.ai.prog2.blatt8.internationalisierung/.idea/modules.xml
@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectModuleManager">
+    <modules>
+      <module fileurl="file://$PROJECT_DIR$/de.hhn.ai.prog2.blatt8.internationalisierung.iml" filepath="$PROJECT_DIR$/de.hhn.ai.prog2.blatt8.internationalisierung.iml" />
+    </modules>
+  </component>
+</project>
\ No newline at end of file
diff --git a/de.hhn.ai.prog2.blatt8.internationalisierung/.idea/vcs.xml b/de.hhn.ai.prog2.blatt8.internationalisierung/.idea/vcs.xml
new file mode 100644
index 0000000..6c0b863
--- /dev/null
+++ b/de.hhn.ai.prog2.blatt8.internationalisierung/.idea/vcs.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="$PROJECT_DIR$/.." vcs="Git" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/de.hhn.ai.prog2.blatt8.internationalisierung/.idea/workspace.xml b/de.hhn.ai.prog2.blatt8.internationalisierung/.idea/workspace.xml
new file mode 100644
index 0000000..923503c
--- /dev/null
+++ b/de.hhn.ai.prog2.blatt8.internationalisierung/.idea/workspace.xml
@@ -0,0 +1,506 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ChangeListManager">
+    <list default="true" id="afe8ba73-7d05-48a7-bd82-e56b42c13591" name="Default Changelist" comment="">
+      <change afterPath="$PROJECT_DIR$/src/locale_de_DE.properties" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/src/locale_en.properties" afterDir="false" />
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new file mode 100644
index 0000000..4fdb5f3
--- /dev/null
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@@ -0,0 +1,17 @@
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+  <name>de.hhn.ai.prog2.blatt8.internationalisierung</name>
+  <comment/>
+  <projects>
+    </projects>
+  <buildSpec>
+    <buildCommand>
+      <name>org.eclipse.jdt.core.javabuilder</name>
+      <arguments>
+            </arguments>
+    </buildCommand>
+  </buildSpec>
+  <natures>
+    <nature>org.eclipse.jdt.core.javanature</nature>
+  </natures>
+</projectDescription>
\ No newline at end of file
diff --git a/de.hhn.ai.prog2.blatt8.internationalisierung/.settings/org.eclipse.jdt.core.prefs b/de.hhn.ai.prog2.blatt8.internationalisierung/.settings/org.eclipse.jdt.core.prefs
new file mode 100644
index 0000000..0c68a61
--- /dev/null
+++ b/de.hhn.ai.prog2.blatt8.internationalisierung/.settings/org.eclipse.jdt.core.prefs
@@ -0,0 +1,7 @@
+eclipse.preferences.version=1
+org.eclipse.jdt.core.compiler.codegen.inlineJsrBytecode=enabled
+org.eclipse.jdt.core.compiler.codegen.targetPlatform=1.8
+org.eclipse.jdt.core.compiler.compliance=1.8
+org.eclipse.jdt.core.compiler.problem.assertIdentifier=error
+org.eclipse.jdt.core.compiler.problem.enumIdentifier=error
+org.eclipse.jdt.core.compiler.source=1.8
diff --git a/de.hhn.ai.prog2.blatt8.internationalisierung/.vscode/launch.json b/de.hhn.ai.prog2.blatt8.internationalisierung/.vscode/launch.json
new file mode 100644
index 0000000..2ceab2c
--- /dev/null
+++ b/de.hhn.ai.prog2.blatt8.internationalisierung/.vscode/launch.json
@@ -0,0 +1,11 @@
+{
+    "configurations": [
+        {
+            "type": "java",
+            "name": "CodeLens (Launch) - App",
+            "request": "launch",
+            "mainClass": "app.App",
+            "projectName": "de.hhn.ai.prog2.blatt8.internationalisierung"
+        }
+    ]
+}
\ No newline at end of file
diff --git a/de.hhn.ai.prog2.blatt8.internationalisierung/customers.txt b/de.hhn.ai.prog2.blatt8.internationalisierung/customers.txt
new file mode 100644
index 0000000..b62168b
--- /dev/null
+++ b/de.hhn.ai.prog2.blatt8.internationalisierung/customers.txt
@@ -0,0 +1 @@
+Theresa#May#1696-06-30
diff --git a/de.hhn.ai.prog2.blatt8.internationalisierung/de.hhn.ai.prog2.blatt8.internationalisierung.iml b/de.hhn.ai.prog2.blatt8.internationalisierung/de.hhn.ai.prog2.blatt8.internationalisierung.iml
new file mode 100644
index 0000000..207c3ee
--- /dev/null
+++ b/de.hhn.ai.prog2.blatt8.internationalisierung/de.hhn.ai.prog2.blatt8.internationalisierung.iml
@@ -0,0 +1,24 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module type="JAVA_MODULE" version="4">
+  <component name="NewModuleRootManager">
+    <output url="file://$MODULE_DIR$/bin" />
+    <exclude-output />
+    <content url="file://$MODULE_DIR$">
+      <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+    <orderEntry type="module-library">
+      <library name="JUnit5.3">
+        <CLASSES>
+          <root url="jar://$MAVEN_REPOSITORY$/org/junit/jupiter/junit-jupiter-api/5.5.0-RC2/junit-jupiter-api-5.5.0-RC2.jar!/" />
+          <root url="jar://$MAVEN_REPOSITORY$/org/apiguardian/apiguardian-api/1.1.0/apiguardian-api-1.1.0.jar!/" />
+          <root url="jar://$MAVEN_REPOSITORY$/org/opentest4j/opentest4j/1.2.0/opentest4j-1.2.0.jar!/" />
+          <root url="jar://$MAVEN_REPOSITORY$/org/junit/platform/junit-platform-commons/1.5.0-RC2/junit-platform-commons-1.5.0-RC2.jar!/" />
+        </CLASSES>
+        <JAVADOC />
+        <SOURCES />
+      </library>
+    </orderEntry>
+  </component>
+</module>
\ No newline at end of file
diff --git a/de.hhn.ai.prog2.blatt8.internationalisierung/src/app/App.java b/de.hhn.ai.prog2.blatt8.internationalisierung/src/app/App.java
new file mode 100644
index 0000000..dbdf291
--- /dev/null
+++ b/de.hhn.ai.prog2.blatt8.internationalisierung/src/app/App.java
@@ -0,0 +1,8 @@
+package app;
+
+public class App {
+    public static void main(String[] args) throws Exception {
+        GUI gui = new GUI();
+        gui.setVisible(true);
+    }
+}
\ No newline at end of file
diff --git a/de.hhn.ai.prog2.blatt8.internationalisierung/src/app/Datenhaltung.java b/de.hhn.ai.prog2.blatt8.internationalisierung/src/app/Datenhaltung.java
new file mode 100644
index 0000000..fc5f20a
--- /dev/null
+++ b/de.hhn.ai.prog2.blatt8.internationalisierung/src/app/Datenhaltung.java
@@ -0,0 +1,30 @@
+package app;
+
+import java.io.BufferedReader;
+import java.io.FileReader;
+import java.io.FileWriter;
+import java.io.IOException;
+import java.io.PrintWriter;
+import java.time.LocalDate;
+import java.util.Locale;
+
+public class Datenhaltung {
+    private static String fileName = "customers.txt";
+
+    public static void speichereKunde(Kunde kunde, Locale locale) throws IOException {
+        PrintWriter writer = new PrintWriter(new FileWriter(fileName));
+        String line = kunde.getFirstName();
+        line += "#" + kunde.getName();
+        line += "#" + kunde.getBirthday().toString();
+        writer.println(line);
+        writer.close();
+    }
+
+    public static Kunde ladeKunde(Locale locale) throws IOException {
+        BufferedReader reader = new BufferedReader(new FileReader(fileName));
+        String line = reader.readLine();
+        String[] val = line.split("#");
+        reader.close();
+        return new Kunde(val[0], val[1], LocalDate.parse(val[2]));
+    }
+}
\ No newline at end of file
diff --git a/de.hhn.ai.prog2.blatt8.internationalisierung/src/app/DatenhaltungTest.java b/de.hhn.ai.prog2.blatt8.internationalisierung/src/app/DatenhaltungTest.java
new file mode 100644
index 0000000..1200427
--- /dev/null
+++ b/de.hhn.ai.prog2.blatt8.internationalisierung/src/app/DatenhaltungTest.java
@@ -0,0 +1,34 @@
+package app;
+
+import org.junit.jupiter.api.Test;
+
+import java.io.IOException;
+import java.time.LocalDate;
+import java.time.format.DateTimeFormatter;
+import java.time.format.FormatStyle;
+import java.util.Locale;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+class DatenhaltungTest {
+
+    @Test
+    void testeKundeLadenUndSpeichern() throws IOException {
+        DateTimeFormatter germanFormatter = DateTimeFormatter.ofLocalizedDate(FormatStyle.MEDIUM)
+                .withLocale(Locale.GERMAN);
+        Kunde kunde1 = new Kunde("Angela", "Merkel", LocalDate.parse("05.07.1958", germanFormatter));
+        Datenhaltung.speichereKunde(kunde1, Locale.GERMAN);
+        Kunde kunde1comp = Datenhaltung.ladeKunde(Locale.GERMAN);
+        assertEquals(kunde1.getFirstName(), kunde1comp.getFirstName());
+        assertEquals(kunde1.getName(), kunde1comp.getName());
+        assertEquals(kunde1.getBirthday(), kunde1comp.getBirthday());
+        DateTimeFormatter englishFormatter = DateTimeFormatter.ofLocalizedDate(FormatStyle.MEDIUM)
+                .withLocale(Locale.ENGLISH);
+        Kunde kunde2 = new Kunde("Theresa", "May", LocalDate.parse("Jun 30, 1969", englishFormatter));
+        Datenhaltung.speichereKunde(kunde2, Locale.ENGLISH);
+        Kunde kunde2comp = Datenhaltung.ladeKunde(Locale.ENGLISH);
+        assertEquals(kunde2.getFirstName(), kunde2comp.getFirstName());
+        assertEquals(kunde2.getName(), kunde2comp.getName());
+        assertEquals(kunde2.getBirthday(), kunde2comp.getBirthday());
+    }
+}
\ No newline at end of file
diff --git a/de.hhn.ai.prog2.blatt8.internationalisierung/src/app/GUI.java b/de.hhn.ai.prog2.blatt8.internationalisierung/src/app/GUI.java
new file mode 100644
index 0000000..d78ab7a
--- /dev/null
+++ b/de.hhn.ai.prog2.blatt8.internationalisierung/src/app/GUI.java
@@ -0,0 +1,134 @@
+package app;
+
+import java.awt.*;
+import java.awt.event.*;
+import java.io.IOException;
+import java.time.LocalDate;
+import java.time.format.DateTimeFormatter;
+import java.time.format.DateTimeParseException;
+import java.time.format.FormatStyle;
+import java.util.Locale;
+import java.util.MissingResourceException;
+import java.util.ResourceBundle;
+
+import javax.swing.*;
+
+public class GUI extends JFrame {
+
+    private static final long serialVersionUID = 2660174081832289605L;
+
+    private ResourceBundle bundle;
+    private String[] locales = { "de_DE", "en" };
+    private JComboBox<String> comboBox = new JComboBox<>(locales);
+    private JTextField firstNameInput = new JTextField("Angela");
+    private JTextField nameInput = new JTextField("Merkel");
+    private JTextField birthdayInput = new JTextField("05.07.1958");
+    private JLabel kundeLbl;
+    private JButton loadBtn;
+    private JButton saveBtn;
+    private JLabel firstNameLbl;
+    private JLabel nameLbl;
+    private JLabel birthdayLbl;
+
+    public GUI() {
+        super("Internationalisierung und Datumsverarbeitung");
+        this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
+        this.setSize(500, 200);
+        drawGUI("de_DE");
+    }
+
+    public void drawGUI(String locale) {
+        try {
+            bundle = ResourceBundle.getBundle("locale_" + locale);
+        } catch (MissingResourceException e) {
+            System.err.println(e);
+        }
+        kundeLbl = new JLabel(bundle.getString("Headline"));
+        loadBtn = new JButton(bundle.getString("LoadBtn"));
+        saveBtn = new JButton(bundle.getString("SaveBtn"));
+        firstNameLbl = new JLabel(bundle.getString("FirstName"));
+        nameLbl = new JLabel(bundle.getString("Name"));
+        birthdayLbl = new JLabel(bundle.getString("Birthday"));
+
+        Container container = this.getContentPane();
+        JFrame parent = this;
+        container.setLayout(new GridLayout(6, 2));
+        container.add(new JLabel(""));
+        container.add(new ComboBoxPanel(this));
+        kundeLbl.setFont(new Font(kundeLbl.getFont().getFamily(), Font.BOLD, 24));
+        container.add(kundeLbl);
+        container.add(new JLabel(""));
+        container.add(firstNameLbl);
+        container.add(firstNameInput);
+        container.add(nameLbl);
+        container.add(nameInput);
+        container.add(birthdayLbl);
+        container.add(birthdayInput);
+        container.add(loadBtn);
+        container.add(saveBtn);
+        saveBtn.addActionListener(e -> {
+            try {
+                Locale currentLocale;
+                if (comboBox.getSelectedItem().toString() == "de_DE")
+                    currentLocale = Locale.GERMAN;
+                else
+                    currentLocale = Locale.ENGLISH;
+                DateTimeFormatter formatter = DateTimeFormatter.ofLocalizedDate(FormatStyle.MEDIUM)
+                        .withLocale(currentLocale);
+                LocalDate birthday = LocalDate.parse(birthdayInput.getText(), formatter);
+                Kunde kunde = new Kunde(firstNameInput.getText(), nameInput.getText(), birthday);
+                Datenhaltung.speichereKunde(kunde, currentLocale);
+                JOptionPane.showMessageDialog(parent, bundle.getString("SaveDone"), bundle.getString("Message"),
+                        JOptionPane.INFORMATION_MESSAGE);
+            } catch (IOException ex) {
+                JOptionPane.showMessageDialog(parent, bundle.getString("IOException"), bundle.getString("Error"),
+                        JOptionPane.ERROR_MESSAGE);
+            } catch (DateTimeParseException ex) {
+                JOptionPane.showMessageDialog(parent, bundle.getString("DateTimeParseException"),
+                        bundle.getString("Error"), JOptionPane.ERROR_MESSAGE);
+            }
+        });
+        loadBtn.addActionListener(e -> {
+            try {
+                Locale currentLocale;
+                if (comboBox.getSelectedItem().toString() == "de_DE")
+                    currentLocale = Locale.GERMAN;
+                else
+                    currentLocale = Locale.ENGLISH;
+                DateTimeFormatter formatter = DateTimeFormatter.ofLocalizedDate(FormatStyle.MEDIUM)
+                        .withLocale(currentLocale);
+                Kunde kunde = Datenhaltung.ladeKunde(currentLocale);
+                firstNameInput.setText(kunde.getFirstName());
+                nameInput.setText(kunde.getName());
+                birthdayInput.setText(kunde.getBirthday().format(formatter));
+            } catch (IOException ex) {
+                JOptionPane.showMessageDialog(parent, bundle.getString("IOException"), bundle.getString("Error"),
+                        JOptionPane.ERROR_MESSAGE);
+            }
+        });
+    }
+
+    private class ComboBoxPanel extends JPanel {
+        private static final long serialVersionUID = -125611113722513442L;
+
+        ComboBoxPanel(GUI parent) {
+            this.setLayout(new FlowLayout(FlowLayout.RIGHT));
+            this.add(comboBox);
+            comboBox.addActionListener(e -> {
+                System.out.println(comboBox.getSelectedItem());
+                try {
+                    bundle = ResourceBundle.getBundle("locale_" + comboBox.getSelectedItem());
+                } catch (MissingResourceException ex) {
+                    System.err.println(e);
+                }
+                kundeLbl.setText(bundle.getString("Headline"));
+                loadBtn.setText(bundle.getString("LoadBtn"));
+                saveBtn.setText(bundle.getString("SaveBtn"));
+                firstNameLbl.setText(bundle.getString("FirstName"));
+                nameLbl.setText(bundle.getString("Name"));
+                birthdayLbl.setText(bundle.getString("Birthday"));
+                parent.repaint();
+            });
+        }
+    }
+}
\ No newline at end of file
diff --git a/de.hhn.ai.prog2.blatt8.internationalisierung/src/app/Kunde.java b/de.hhn.ai.prog2.blatt8.internationalisierung/src/app/Kunde.java
new file mode 100644
index 0000000..edd6ef9
--- /dev/null
+++ b/de.hhn.ai.prog2.blatt8.internationalisierung/src/app/Kunde.java
@@ -0,0 +1,39 @@
+package app;
+
+import java.time.LocalDate;
+
+public class Kunde {
+    private String firstName;
+    private String name;
+    private LocalDate birthday;
+
+    public Kunde(String firstName, String name, LocalDate birthday) {
+        this.firstName = firstName;
+        this.name = name;
+        this.birthday = birthday;
+    }
+
+    public String getFirstName() {
+        return firstName;
+    }
+
+    public void setFirstName(String firstName) {
+        this.firstName = firstName;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public LocalDate getBirthday() {
+        return birthday;
+    }
+
+    public void setBirthday(LocalDate birthday) {
+        this.birthday = birthday;
+    }
+}
\ No newline at end of file
diff --git a/de.hhn.ai.prog2.blatt8.internationalisierung/src/locale_de_DE.properties b/de.hhn.ai.prog2.blatt8.internationalisierung/src/locale_de_DE.properties
new file mode 100644
index 0000000..4fb855c
--- /dev/null
+++ b/de.hhn.ai.prog2.blatt8.internationalisierung/src/locale_de_DE.properties
@@ -0,0 +1,15 @@
+Headline=Kunde
+LoadBtn=Laden
+SaveBtn=Speichern
+FirstName=Vorname
+Name=Nachname
+Birthday=Geburstag
+Error=Fehler
+IOException=Speichern fehlgeschlagen. (IOException)
+DateTimeParseException=Das parsen des Datums ist fehlgeschlagen. Bitte \u00fcberbr\u00fcfen Sie das "Geburstag" Feld.
+SaveDone=Speichern erfolgreich!
+Message=Meldung
+#Ä,ä \u00c4, \u00e4
+#Ö, ö \u00d6, \u00f6
+#Ü, ü \u00dc, \u00fc
+#ß \u00df
\ No newline at end of file
diff --git a/de.hhn.ai.prog2.blatt8.internationalisierung/src/locale_en.properties b/de.hhn.ai.prog2.blatt8.internationalisierung/src/locale_en.properties
new file mode 100644
index 0000000..0098a0c
--- /dev/null
+++ b/de.hhn.ai.prog2.blatt8.internationalisierung/src/locale_en.properties
@@ -0,0 +1,11 @@
+Headline=Customer
+LoadBtn=load
+SaveBtn=save
+FirstName=firstname
+Name=surname
+Birthday=date of birth
+Error=Error
+IOException=Save has failed. (IOException)
+DateTimeParseException=Date parse failed. Please check your input in the "birthday" field.
+SaveDone=Save successfull!
+Message=Message
\ No newline at end of file