Login ergänzt

.idea/misc.xml

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
-  <component name="ProjectRootManager" version="2" languageLevel="JDK_16" project-jdk-name="17" project-jdk-type="JavaSDK">
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_17" default="true" project-jdk-name="17" project-jdk-type="JavaSDK">
     <output url="file://$PROJECT_DIR$/out" />
   </component>
 </project>

src/Execute.java

@@ -25,6 +25,27 @@ public class Execute {
                 + "i: Sesam; j: Schwefeldioxid und Sulfit; k: Nüsse; l: Sellerie; m: Fische; n: Lupinen\n"
                 + "1: Nitrit-Pökelsalz; 2: Phosphat; 3: Nitrat; 4: Antioxidationsmittel; 5: Farbstoff;\n"
                 + "6: Geschmacksverstärker; 7: Süßungsmittel; 8: Konservierungsstoff");
+
+        System.out.println("");
+        System.out.println("____________________________LOGIN_______________________________");
+        System.out.println("");
+        System.out.println("Bitte einloggen");
+        Data userData = new Data("user.txt");
+        Login login = new Login();
+        Scanner leser = new Scanner(System.in);
+
+        while(true)
+        {
+            System.out.print("Telefonnummer: ");
+            String phoneNumber = leser.nextLine();
+            System.out.print("Passwort: ");
+            String password = leser.nextLine();
+            login.Einloggen(userData.readUser(), password, phoneNumber);
+
+        }
+
+
+
     }
 
     //EXECUTE LOGIN

src/Login.java

@@ -0,0 +1,45 @@
+import java.util.ArrayList;
+
+public class Login {
+    public void Einloggen(ArrayList<User> user, String password, String phoneNumber) {
+
+            System.out.println();
+            System.out.println("\t\t\tANMELDUNG");
+            int i = 0;
+
+            while (true) {
+
+                boolean error = false;
+                error = isError(error, phoneNumber);
+
+                for (User user1 : user) {
+                    if (!error) {
+                        if (user1.getPassword().equals(password) && user1.getPhonenumber().equals(phoneNumber))
+                        {
+                            System.out.println();
+                            System.out.println("Herzlich Willkommen " + user1.getNameParent1() + " und " + user1.getNameParent2() + ", Ihr Login war erfolgreich!");
+                            i++;
+                            break;
+                        }
+                        else if (!(user1.getPassword().equals(password) && user1.getPhonenumber().equals(phoneNumber)))
+                        {
+                            System.out.println("Login fehlgeschlagen. Versuchen Sie es erneut.");
+                            break;
+                        }
+                    }
+                }
+                if (i > 0) {
+                    break;
+                }
+            }
+        }
+
+    public boolean isError ( boolean error, String phoneNumber)
+    {
+    if (phoneNumber.isEmpty()) {
+        error = true;
+    }
+        return error;
+    }
+}
+