added very basic Posts

src/main/java/de/anxietyprime/swajodel/JodelPost.java

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+package de.anxietyprime.swajodel;
+
+import java.util.Date;
+import java.util.Optional;
+import java.util.Vector;
+
+public class JodelPost {
+    private Long id;
+    private Long authorID;
+
+    public Long anonymousID;
+    public String title;
+    public String content;
+    public Date date;
+    public Location location;
+    public Vector<JodelPost> comments = new Vector<>();
+    public Optional<Boolean> reaction;
+    public Reaction[] reactions;
+
+    public void anonymize(Optional<Vector<Long>> idCache) {
+        if (idCache.isEmpty()) {
+            idCache = Optional.of(new Vector());
+        }
+        System.out.println(idCache);
+
+        int i = idCache.get().indexOf(this.authorID);
+        if (i == -1) {
+            this.anonymousID = (long) idCache.get().size();
+            idCache.get().add(this.authorID);
+        }
+        else {
+            this.anonymousID = (long) i;
+        }
+
+        for (JodelPost comment : this.comments) {
+            comment.anonymize(idCache);
+        }
+    }
+
+    public JodelPost(long id) {
+        this.authorID = id;
+    }
+}

src/main/java/de/anxietyprime/swajodel/Location.java

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+package de.anxietyprime.swajodel;
+
+public class Location {
+    public float longitude;
+    public float latitude;
+}

src/main/java/de/anxietyprime/swajodel/Reaction.java

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+package de.anxietyprime.swajodel;
+
+public class Reaction {
+    private long positive;
+    private long negative;
+}

src/main/java/de/anxietyprime/swajodel/Routes.java

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+package de.anxietyprime.swajodel;
+
+import com.fasterxml.jackson.databind.JsonSerializer;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+import java.util.Optional;
+
+@RestController
+public class Routes {
+
+    @GetMapping("")
+    public JodelPost test() {
+        JodelPost post = new JodelPost(100);
+
+        post.anonymize(Optional.empty());
+
+        return post;
+    }
+
+
+}