init

pom.xml

@@ -0,0 +1,17 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+
+    <groupId>org.example</groupId>
+    <artifactId>Vorlesung</artifactId>
+    <version>1.0-SNAPSHOT</version>
+
+    <properties>
+        <maven.compiler.source>17</maven.compiler.source>
+        <maven.compiler.target>17</maven.compiler.target>
+        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+    </properties>
+
+</project>

src/main/java/org/example/Main.java

@@ -0,0 +1,20 @@
+package org.example;
+
+import java.util.Date;
+
+//TIP To <b>Run</b> code, press <shortcut actionId="Run"/> or
+// click the <icon src="AllIcons.Actions.Execute"/> icon in the gutter.
+public class Main {
+    public static void main(String[] args) {
+        var arbeiter = new Mitarbeiter("Bernd", 55, 123, 213);
+        var person = new Student("Jakob", 24, 12345);
+        var frau = new Person("Gerda", 54);
+        var test = arbeiter.heiraten(frau);
+
+        System.out.println(test);
+
+        System.out.println(person.isVerheirated());
+
+        System.out.println(person.istVolljaehrig());
+    }
+}

src/main/java/org/example/Mitarbeiter.java

@@ -0,0 +1,20 @@
+package org.example;
+
+public class Mitarbeiter extends Person {
+    private int personalNummer;
+    private int sNummer;
+
+    /**
+     * Erstellen eines Mitarbeiters.
+     *
+     * @param name  Name der Person.
+     * @param alter Alter der Person.
+     * @param personalNummer Personal Nummer der Person.
+     * @param sNummer Sozi Nummer.
+     */
+    Mitarbeiter(String name, int alter, int personalNummer, int sNummer) {
+        super(name, alter);
+        this.personalNummer = personalNummer;
+        this.sNummer = sNummer;
+    }
+}

src/main/java/org/example/Person.java

@@ -0,0 +1,62 @@
+package org.example;
+
+import java.util.logging.Logger;
+
+/**
+ * Eine Person.
+ */
+public class Person {
+    private String name;
+    private int alter;
+    protected Person partner = null;
+
+    Logger logger = Logger.getLogger(Person.class.getName());
+
+    /**
+     * Erstellen einer Person.
+     * @param name Name der Person.
+     * @param alter Alter der Person.
+     */
+    Person(String name, int alter) {
+        this.alter = alter;
+        this.name = name;
+    }
+
+    boolean istVolljaehrig() {
+        return alter >= 18;
+    }
+
+    public boolean heiraten(Person partner) {
+        if (partner == null || this.partner != null || partner.getPartner() != null) {
+            logger.info("DU Bist dumm!!");
+            return false;
+        }
+        if (this == partner) {
+            return false;
+        }
+        if (!this.istVolljaehrig() || !partner.istVolljaehrig()) {
+            return false;
+        }
+
+        this.partner = partner;
+        partner.partner = this;
+
+        return true;
+    }
+
+    public Person getPartner() {
+        return partner;
+    }
+
+    public boolean isVerheirated() {
+        return this.partner != null;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public int getAlter() {
+        return alter;
+    }
+}

src/main/java/org/example/Personenveraltung.java

@@ -0,0 +1,7 @@
+package org.example;
+
+import java.util.ArrayList;
+
+public class Personenveraltung {
+    ArrayList personArrayList = new ArrayList();
+}

src/main/java/org/example/Student.java

@@ -0,0 +1,9 @@
+package org.example;
+
+public class Student extends Person {
+    int matNr;
+    Student(String name, int alter, int matNr) {
+        super(name, alter);
+        this.matNr = matNr;
+    }
+}