diff --git a/src/main/webapp/app/overview/discussion-section/discussion-section.component.ts b/src/main/webapp/app/overview/discussion-section/discussion-section.component.ts
index 63d5873cc3b1..7a27ab65a2dc 100644
--- a/src/main/webapp/app/overview/discussion-section/discussion-section.component.ts
+++ b/src/main/webapp/app/overview/discussion-section/discussion-section.component.ts
@@ -1,4 +1,4 @@
-import { AfterViewInit, Component, ElementRef, OnDestroy, QueryList, ViewChild, ViewChildren, effect, input } from '@angular/core';
+import { AfterViewInit, Component, ElementRef, OnDestroy, QueryList, ViewChild, ViewChildren, effect, inject, input } from '@angular/core';
 import interact from 'interactjs';
 import { Exercise } from 'app/entities/exercise.model';
 import { Lecture } from 'app/entities/lecture.model';
@@ -59,14 +59,14 @@ export class DiscussionSectionComponent extends CourseDiscussionDirective implem
     faArrowLeft = faArrowLeft;
     faLongArrowRight = faLongArrowRight;
 
-    constructor(
-        protected metisService: MetisService,
-        private channelService: ChannelService,
-        private activatedRoute: ActivatedRoute,
-        private router: Router,
-        private formBuilder: FormBuilder,
-    ) {
-        super(metisService);
+    protected metisService = inject(MetisService);
+    private channelService = inject(ChannelService);
+    private activatedRoute = inject(ActivatedRoute);
+    private router = inject(Router);
+    private formBuilder = inject(FormBuilder);
+
+    constructor() {
+        super();
         effect(() => this.loadData(this.exercise(), this.lecture()));
     }
 
diff --git a/src/main/webapp/app/shared/metis/answer-post.service.ts b/src/main/webapp/app/shared/metis/answer-post.service.ts
index 3f9549e0ef2f..660692556020 100644
--- a/src/main/webapp/app/shared/metis/answer-post.service.ts
+++ b/src/main/webapp/app/shared/metis/answer-post.service.ts
@@ -1,4 +1,4 @@
-import { Injectable } from '@angular/core';
+import { Injectable, inject } from '@angular/core';
 import { HttpClient, HttpResponse } from '@angular/common/http';
 import { Observable } from 'rxjs';
 import { map } from 'rxjs/operators';
@@ -9,11 +9,9 @@ type EntityResponseType = HttpResponse<AnswerPost>;
 
 @Injectable({ providedIn: 'root' })
 export class AnswerPostService extends PostingService<AnswerPost> {
-    public resourceUrl = 'api/courses/';
+    protected http = inject(HttpClient);
 
-    constructor(protected http: HttpClient) {
-        super();
-    }
+    public resourceUrl = 'api/courses/';
 
     /**
      * creates an answerPost
diff --git a/src/main/webapp/app/shared/metis/answer-post/answer-post.component.ts b/src/main/webapp/app/shared/metis/answer-post/answer-post.component.ts
index 344575e50c6d..d7644bc5daea 100644
--- a/src/main/webapp/app/shared/metis/answer-post/answer-post.component.ts
+++ b/src/main/webapp/app/shared/metis/answer-post/answer-post.component.ts
@@ -4,7 +4,6 @@ import {
     Component,
     EventEmitter,
     HostListener,
-    Inject,
     Input,
     OnChanges,
     OnInit,
@@ -12,6 +11,7 @@ import {
     Renderer2,
     ViewChild,
     ViewContainerRef,
+    inject,
     input,
 } from '@angular/core';
 import { AnswerPost } from 'app/entities/metis/answer-post.model';
@@ -59,6 +59,10 @@ import { EmojiPickerComponent } from 'app/shared/metis/emoji/emoji-picker.compon
     ],
 })
 export class AnswerPostComponent extends PostingDirective<AnswerPost> implements OnInit, OnChanges {
+    changeDetector = inject(ChangeDetectorRef);
+    renderer = inject(Renderer2);
+    private document = inject<Document>(DOCUMENT);
+
     @Input() lastReadDate?: dayjs.Dayjs;
     @Input() isLastAnswer: boolean;
     @Output() openPostingCreateEditModal = new EventEmitter<void>();
@@ -83,14 +87,6 @@ export class AnswerPostComponent extends PostingDirective<AnswerPost> implements
     mayDelete: boolean = false;
     @ViewChild(AnswerPostReactionsBarComponent) private reactionsBarComponent!: AnswerPostReactionsBarComponent;
 
-    constructor(
-        public changeDetector: ChangeDetectorRef,
-        public renderer: Renderer2,
-        @Inject(DOCUMENT) private document: Document,
-    ) {
-        super();
-    }
-
     ngOnInit() {
         super.ngOnInit();
         this.assignPostingToAnswerPost();
diff --git a/src/main/webapp/app/shared/metis/conversations/channel.service.ts b/src/main/webapp/app/shared/metis/conversations/channel.service.ts
index 52e91237f14a..40575e536751 100644
--- a/src/main/webapp/app/shared/metis/conversations/channel.service.ts
+++ b/src/main/webapp/app/shared/metis/conversations/channel.service.ts
@@ -1,4 +1,4 @@
-import { Injectable } from '@angular/core';
+import { Injectable, inject } from '@angular/core';
 import { HttpClient, HttpParams, HttpResponse } from '@angular/common/http';
 import { Observable } from 'rxjs';
 import { ChannelDTO, ChannelIdAndNameDTO } from 'app/entities/metis/conversation/channel.model';
@@ -8,13 +8,11 @@ import { AccountService } from 'app/core/auth/account.service';
 
 @Injectable({ providedIn: 'root' })
 export class ChannelService {
-    public resourceUrl = '/api/courses/';
+    private http = inject(HttpClient);
+    private conversationService = inject(ConversationService);
+    private accountService = inject(AccountService);
 
-    constructor(
-        private http: HttpClient,
-        private conversationService: ConversationService,
-        private accountService: AccountService,
-    ) {}
+    public resourceUrl = '/api/courses/';
 
     getChannelsOfCourse(courseId: number): Observable<HttpResponse<ChannelDTO[]>> {
         return this.http.get<ChannelDTO[]>(`${this.resourceUrl}${courseId}/channels/overview`, {
diff --git a/src/main/webapp/app/shared/metis/conversations/conversation.service.ts b/src/main/webapp/app/shared/metis/conversations/conversation.service.ts
index 5bf109a6a476..62f6d982f39c 100644
--- a/src/main/webapp/app/shared/metis/conversations/conversation.service.ts
+++ b/src/main/webapp/app/shared/metis/conversations/conversation.service.ts
@@ -1,4 +1,4 @@
-import { Injectable } from '@angular/core';
+import { Injectable, inject } from '@angular/core';
 import { HttpClient, HttpParams, HttpResponse } from '@angular/common/http';
 import { Observable } from 'rxjs';
 import { map } from 'rxjs/operators';
@@ -32,13 +32,11 @@ export enum ConversationMemberSearchFilter {
 }
 @Injectable({ providedIn: 'root' })
 export class ConversationService {
-    public resourceUrl = '/api/courses/';
+    protected http = inject(HttpClient);
+    protected translationService = inject(TranslateService);
+    protected accountService = inject(AccountService);
 
-    constructor(
-        protected http: HttpClient,
-        protected translationService: TranslateService,
-        protected accountService: AccountService,
-    ) {}
+    public resourceUrl = '/api/courses/';
 
     getConversationName(conversation: ConversationDTO | undefined, showLogin = false): string {
         if (!conversation) {
diff --git a/src/main/webapp/app/shared/metis/conversations/group-chat.service.ts b/src/main/webapp/app/shared/metis/conversations/group-chat.service.ts
index 16bf49e5727a..1411a823af96 100644
--- a/src/main/webapp/app/shared/metis/conversations/group-chat.service.ts
+++ b/src/main/webapp/app/shared/metis/conversations/group-chat.service.ts
@@ -3,18 +3,16 @@ import { OneToOneChatDTO } from 'app/entities/metis/conversation/one-to-one-chat
 import { GroupChatDTO } from 'app/entities/metis/conversation/group-chat.model';
 import { Observable, map } from 'rxjs';
 import { HttpClient, HttpResponse } from '@angular/common/http';
-import { Injectable } from '@angular/core';
+import { Injectable, inject } from '@angular/core';
 import { AccountService } from 'app/core/auth/account.service';
 
 @Injectable({ providedIn: 'root' })
 export class GroupChatService {
-    public resourceUrl = 'api/courses/';
+    private http = inject(HttpClient);
+    private conversationService = inject(ConversationService);
+    private accountService = inject(AccountService);
 
-    constructor(
-        private http: HttpClient,
-        private conversationService: ConversationService,
-        private accountService: AccountService,
-    ) {}
+    public resourceUrl = 'api/courses/';
 
     create(courseId: number, loginsOfChatPartners: string[]): Observable<HttpResponse<GroupChatDTO>> {
         return this.http
diff --git a/src/main/webapp/app/shared/metis/conversations/one-to-one-chat.service.ts b/src/main/webapp/app/shared/metis/conversations/one-to-one-chat.service.ts
index 92ed92e33bf2..242a69116c6a 100644
--- a/src/main/webapp/app/shared/metis/conversations/one-to-one-chat.service.ts
+++ b/src/main/webapp/app/shared/metis/conversations/one-to-one-chat.service.ts
@@ -1,4 +1,4 @@
-import { Injectable } from '@angular/core';
+import { Injectable, inject } from '@angular/core';
 import { HttpClient, HttpResponse } from '@angular/common/http';
 import { Observable } from 'rxjs';
 import { ConversationService } from 'app/shared/metis/conversations/conversation.service';
@@ -7,12 +7,10 @@ import { OneToOneChatDTO } from 'app/entities/metis/conversation/one-to-one-chat
 
 @Injectable({ providedIn: 'root' })
 export class OneToOneChatService {
-    public resourceUrl = '/api/courses/';
+    private http = inject(HttpClient);
+    private conversationService = inject(ConversationService);
 
-    constructor(
-        private http: HttpClient,
-        private conversationService: ConversationService,
-    ) {}
+    public resourceUrl = '/api/courses/';
 
     create(courseId: number, loginOfChatPartner: string): Observable<HttpResponse<OneToOneChatDTO>> {
         return this.http
diff --git a/src/main/webapp/app/shared/metis/course-discussion.directive.ts b/src/main/webapp/app/shared/metis/course-discussion.directive.ts
index d579b0d9dcb2..ea3138a18b61 100644
--- a/src/main/webapp/app/shared/metis/course-discussion.directive.ts
+++ b/src/main/webapp/app/shared/metis/course-discussion.directive.ts
@@ -1,4 +1,4 @@
-import { Directive } from '@angular/core';
+import { Directive, inject } from '@angular/core';
 import { FormGroup } from '@angular/forms';
 import { faFilter, faLongArrowAltDown, faLongArrowAltUp, faPlus, faSearch, faTimes } from '@fortawesome/free-solid-svg-icons';
 import { PostContextFilter, PostSortCriterion, SortDirection } from 'app/shared/metis/metis.util';
@@ -12,6 +12,8 @@ import { MetisService } from 'app/shared/metis/metis.service';
     providers: [MetisService],
 })
 export abstract class CourseDiscussionDirective {
+    protected metisService = inject(MetisService);
+
     searchText?: string;
     currentPostContextFilter: PostContextFilter;
     formGroup: FormGroup;
@@ -37,8 +39,6 @@ export abstract class CourseDiscussionDirective {
     faLongArrowAltUp = faLongArrowAltUp;
     faLongArrowAltDown = faLongArrowAltDown;
 
-    protected constructor(protected metisService: MetisService) {}
-
     /**
      * on changing any filter, the metis service is invoked to deliver all posts for the
      * currently set context, filtered on the server
diff --git a/src/main/webapp/app/shared/metis/message/message-inline-input/message-inline-input.component.ts b/src/main/webapp/app/shared/metis/message/message-inline-input/message-inline-input.component.ts
index 84c0de7e1c10..c4e798250709 100644
--- a/src/main/webapp/app/shared/metis/message/message-inline-input/message-inline-input.component.ts
+++ b/src/main/webapp/app/shared/metis/message/message-inline-input/message-inline-input.component.ts
@@ -1,4 +1,4 @@
-import { Component, OnInit, ViewEncapsulation } from '@angular/core';
+import { Component, OnInit, ViewEncapsulation, inject } from '@angular/core';
 import { AnswerPost } from 'app/entities/metis/answer-post.model';
 import { MetisService } from 'app/shared/metis/metis.service';
 import { FormBuilder, FormsModule, ReactiveFormsModule, Validators } from '@angular/forms';
@@ -21,16 +21,12 @@ import { TranslateDirective } from 'app/shared/language/translate.directive';
     imports: [FormsModule, ReactiveFormsModule, PostingMarkdownEditorComponent, TranslateDirective, PostingButtonComponent, ArtemisSharedCommonModule],
 })
 export class MessageInlineInputComponent extends PostingCreateEditDirective<Post | AnswerPost> implements OnInit {
-    warningDismissed = false;
+    protected metisService = inject(MetisService);
+    protected modalService = inject(NgbModal);
+    protected formBuilder = inject(FormBuilder);
+    protected localStorageService = inject(LocalStorageService);
 
-    constructor(
-        protected metisService: MetisService,
-        protected modalService: NgbModal,
-        protected formBuilder: FormBuilder,
-        protected localStorageService: LocalStorageService,
-    ) {
-        super(metisService, modalService, formBuilder);
-    }
+    warningDismissed = false;
 
     ngOnInit(): void {
         super.ngOnInit();
diff --git a/src/main/webapp/app/shared/metis/message/message-reply-inline-input/message-reply-inline-input.component.ts b/src/main/webapp/app/shared/metis/message/message-reply-inline-input/message-reply-inline-input.component.ts
index 09779d8301a7..762d12d4c680 100644
--- a/src/main/webapp/app/shared/metis/message/message-reply-inline-input/message-reply-inline-input.component.ts
+++ b/src/main/webapp/app/shared/metis/message/message-reply-inline-input/message-reply-inline-input.component.ts
@@ -1,4 +1,4 @@
-import { Component, EventEmitter, OnChanges, OnInit, Output, SimpleChanges, ViewEncapsulation, input } from '@angular/core';
+import { Component, EventEmitter, OnChanges, OnInit, Output, SimpleChanges, ViewEncapsulation, inject, input } from '@angular/core';
 import { AnswerPost } from 'app/entities/metis/answer-post.model';
 import { NgbModal } from '@ng-bootstrap/ng-bootstrap';
 import { MetisService } from 'app/shared/metis/metis.service';
@@ -21,6 +21,11 @@ import { ArtemisSharedCommonModule } from 'app/shared/shared-common.module';
     imports: [FormsModule, ReactiveFormsModule, PostingMarkdownEditorComponent, TranslateDirective, PostingButtonComponent, ArtemisSharedCommonModule],
 })
 export class MessageReplyInlineInputComponent extends PostingCreateEditDirective<AnswerPost> implements OnInit, OnChanges {
+    protected metisService = inject(MetisService);
+    protected modalService = inject(NgbModal);
+    protected formBuilder = inject(FormBuilder);
+    protected localStorageService = inject(LocalStorageService);
+
     warningDismissed = false;
 
     readonly activeConversation = input<ConversationDTO>();
@@ -28,15 +33,6 @@ export class MessageReplyInlineInputComponent extends PostingCreateEditDirective
     @Output()
     valueChange = new EventEmitter<void>();
 
-    constructor(
-        protected metisService: MetisService,
-        protected modalService: NgbModal,
-        protected formBuilder: FormBuilder,
-        protected localStorageService: LocalStorageService,
-    ) {
-        super(metisService, modalService, formBuilder);
-    }
-
     ngOnInit(): void {
         super.ngOnInit();
         this.warningDismissed = !!this.localStorageService.retrieve('chatWarningDismissed');
diff --git a/src/main/webapp/app/shared/metis/metis-conversation.service.ts b/src/main/webapp/app/shared/metis/metis-conversation.service.ts
index b21b4074294d..36884c815470 100644
--- a/src/main/webapp/app/shared/metis/metis-conversation.service.ts
+++ b/src/main/webapp/app/shared/metis/metis-conversation.service.ts
@@ -1,4 +1,4 @@
-import { Injectable, OnDestroy } from '@angular/core';
+import { Injectable, OnDestroy, inject } from '@angular/core';
 import { EMPTY, Observable, ReplaySubject, Subject, Subscription, catchError, finalize, map, of, switchMap, tap } from 'rxjs';
 import { HttpErrorResponse, HttpResponse } from '@angular/common/http';
 import { ConversationService } from 'app/shared/metis/conversations/conversation.service';
@@ -26,6 +26,16 @@ import { NotificationService } from 'app/shared/notification/notification.servic
  */
 @Injectable()
 export class MetisConversationService implements OnDestroy {
+    private groupChatService = inject(GroupChatService);
+    private oneToOneChatService = inject(OneToOneChatService);
+    private channelService = inject(ChannelService);
+    protected conversationService = inject(ConversationService);
+    private jhiWebsocketService = inject(JhiWebsocketService);
+    private accountService = inject(AccountService);
+    private alertService = inject(AlertService);
+    private router = inject(Router);
+    private notificationService = inject(NotificationService);
+
     // Stores the conversation of the course where the current user is a member
     private conversationsOfUser: ConversationDTO[] = [];
     _conversationsOfUser$: ReplaySubject<ConversationDTO[]> = new ReplaySubject<ConversationDTO[]>(1);
@@ -52,17 +62,7 @@ export class MetisConversationService implements OnDestroy {
 
     private _isServiceSetup$: ReplaySubject<boolean> = new ReplaySubject<boolean>(1);
 
-    constructor(
-        private groupChatService: GroupChatService,
-        private oneToOneChatService: OneToOneChatService,
-        private channelService: ChannelService,
-        protected conversationService: ConversationService,
-        private jhiWebsocketService: JhiWebsocketService,
-        private accountService: AccountService,
-        private alertService: AlertService,
-        private router: Router,
-        private notificationService: NotificationService,
-    ) {
+    constructor() {
         this.accountService.identity().then((user: User) => {
             this.userId = user.id!;
         });
diff --git a/src/main/webapp/app/shared/metis/metis.service.ts b/src/main/webapp/app/shared/metis/metis.service.ts
index d5c40e6dcd27..2f719ba0f325 100644
--- a/src/main/webapp/app/shared/metis/metis.service.ts
+++ b/src/main/webapp/app/shared/metis/metis.service.ts
@@ -36,6 +36,14 @@ import { cloneDeep } from 'lodash-es';
 
 @Injectable()
 export class MetisService implements OnDestroy {
+    protected postService = inject(PostService);
+    protected answerPostService = inject(AnswerPostService);
+    protected reactionService = inject(ReactionService);
+    protected accountService = inject(AccountService);
+    protected exerciseService = inject(ExerciseService);
+    private jhiWebsocketService = inject(JhiWebsocketService);
+    private conversationService = inject(ConversationService);
+
     private posts$: ReplaySubject<Post[]> = new ReplaySubject<Post[]>(1);
     private tags$: BehaviorSubject<string[]> = new BehaviorSubject<string[]>([]);
     private totalNumberOfPosts$: ReplaySubject<number> = new ReplaySubject<number>(1);
@@ -53,16 +61,9 @@ export class MetisService implements OnDestroy {
     private courseWideTopicSubscription: Subscription;
     private savedPostService: SavedPostService = inject(SavedPostService);
 
-    constructor(
-        protected postService: PostService,
-        protected answerPostService: AnswerPostService,
-        protected reactionService: ReactionService,
-        protected accountService: AccountService,
-        protected exerciseService: ExerciseService,
-        private jhiWebsocketService: JhiWebsocketService,
-        private conversationService: ConversationService,
-        notificationService: NotificationService,
-    ) {
+    constructor() {
+        const notificationService = inject(NotificationService);
+
         this.accountService.identity().then((user: User) => {
             this.user = user!;
         });
diff --git a/src/main/webapp/app/shared/metis/post.service.ts b/src/main/webapp/app/shared/metis/post.service.ts
index ed859078e07c..613632847903 100644
--- a/src/main/webapp/app/shared/metis/post.service.ts
+++ b/src/main/webapp/app/shared/metis/post.service.ts
@@ -1,4 +1,4 @@
-import { Injectable } from '@angular/core';
+import { Injectable, inject } from '@angular/core';
 import { HttpClient, HttpParams, HttpResponse } from '@angular/common/http';
 import { Observable } from 'rxjs';
 import { map } from 'rxjs/operators';
@@ -13,11 +13,9 @@ type EntityArrayResponseType = HttpResponse<Post[]>;
 
 @Injectable({ providedIn: 'root' })
 export class PostService extends PostingService<Post> {
-    public resourceUrl = 'api/courses/';
+    protected http = inject(HttpClient);
 
-    constructor(protected http: HttpClient) {
-        super();
-    }
+    public resourceUrl = 'api/courses/';
 
     /**
      * creates a post
diff --git a/src/main/webapp/app/shared/metis/post/post.component.ts b/src/main/webapp/app/shared/metis/post/post.component.ts
index dc0a0070ef8f..9355c3b273c6 100644
--- a/src/main/webapp/app/shared/metis/post/post.component.ts
+++ b/src/main/webapp/app/shared/metis/post/post.component.ts
@@ -5,7 +5,6 @@ import {
     Component,
     EventEmitter,
     HostListener,
-    Inject,
     Input,
     OnChanges,
     OnInit,
@@ -13,6 +12,7 @@ import {
     Renderer2,
     ViewChild,
     ViewContainerRef,
+    inject,
     input,
 } from '@angular/core';
 import { Post } from 'app/entities/metis/post.model';
@@ -76,6 +76,14 @@ import { ArtemisSharedCommonModule } from 'app/shared/shared-common.module';
     ],
 })
 export class PostComponent extends PostingDirective<Post> implements OnInit, OnChanges, AfterContentChecked {
+    metisService = inject(MetisService);
+    changeDetector = inject(ChangeDetectorRef);
+    private oneToOneChatService = inject(OneToOneChatService);
+    private metisConversationService = inject(MetisConversationService);
+    private router = inject(Router);
+    renderer = inject(Renderer2);
+    private document = inject<Document>(DOCUMENT);
+
     @Input() lastReadDate?: dayjs.Dayjs;
     @Input() readOnlyMode: boolean;
     @Input() previewMode: boolean;
@@ -122,18 +130,6 @@ export class PostComponent extends PostingDirective<Post> implements OnInit, OnC
     dropdownPosition = { x: 0, y: 0 };
     @ViewChild(PostReactionsBarComponent) protected reactionsBarComponent!: PostReactionsBarComponent;
 
-    constructor(
-        public metisService: MetisService,
-        public changeDetector: ChangeDetectorRef,
-        private oneToOneChatService: OneToOneChatService,
-        private metisConversationService: MetisConversationService,
-        private router: Router,
-        public renderer: Renderer2,
-        @Inject(DOCUMENT) private document: Document,
-    ) {
-        super();
-    }
-
     get reactionsBar() {
         return this.reactionsBarComponent;
     }
diff --git a/src/main/webapp/app/shared/metis/posting-content/enlarge-slide-image/enlarge-slide-image.component.ts b/src/main/webapp/app/shared/metis/posting-content/enlarge-slide-image/enlarge-slide-image.component.ts
index 8decae042f16..2b28611cda42 100644
--- a/src/main/webapp/app/shared/metis/posting-content/enlarge-slide-image/enlarge-slide-image.component.ts
+++ b/src/main/webapp/app/shared/metis/posting-content/enlarge-slide-image/enlarge-slide-image.component.ts
@@ -1,4 +1,4 @@
-import { Component, Inject } from '@angular/core';
+import { Component, inject } from '@angular/core';
 import { MAT_DIALOG_DATA } from '@angular/material/dialog';
 
 export interface DialogData {
@@ -10,5 +10,5 @@ export interface DialogData {
     standalone: true,
 })
 export class EnlargeSlideImageComponent {
-    constructor(@Inject(MAT_DIALOG_DATA) public data: DialogData) {}
+    data = inject<DialogData>(MAT_DIALOG_DATA);
 }
diff --git a/src/main/webapp/app/shared/metis/posting-content/posting-content-part/posting-content-part.components.ts b/src/main/webapp/app/shared/metis/posting-content/posting-content-part/posting-content-part.components.ts
index b079bc9b40a3..8bef9d1357a7 100644
--- a/src/main/webapp/app/shared/metis/posting-content/posting-content-part/posting-content-part.components.ts
+++ b/src/main/webapp/app/shared/metis/posting-content/posting-content-part/posting-content-part.components.ts
@@ -1,4 +1,4 @@
-import { Component, EventEmitter, Input, OnInit, Output } from '@angular/core';
+import { Component, EventEmitter, Input, OnInit, Output, inject } from '@angular/core';
 import { PostingContentPart, ReferenceType } from '../../metis.util';
 import { FileService } from 'app/shared/http/file.service';
 
@@ -33,6 +33,10 @@ import { HtmlForPostingMarkdownPipe } from 'app/shared/pipes/html-for-posting-ma
     imports: [RouterLink, FaIconComponent, TranslateDirective, HtmlForPostingMarkdownPipe],
 })
 export class PostingContentPartComponent implements OnInit {
+    private fileService = inject(FileService);
+    private dialog = inject(MatDialog);
+    private accountService = inject(AccountService);
+
     @Input() postingContentPart: PostingContentPart;
     @Output() userReferenceClicked = new EventEmitter<string>();
     @Output() channelReferenceClicked = new EventEmitter<number>();
@@ -54,12 +58,6 @@ export class PostingContentPartComponent implements OnInit {
     processedContentBeforeReference: string;
     processedContentAfterReference: string;
 
-    constructor(
-        private fileService: FileService,
-        private dialog: MatDialog,
-        private accountService: AccountService,
-    ) {}
-
     ngOnInit() {
         this.processContent();
     }
diff --git a/src/main/webapp/app/shared/metis/posting-content/posting-content.components.ts b/src/main/webapp/app/shared/metis/posting-content/posting-content.components.ts
index f4e775957682..84657503785d 100644
--- a/src/main/webapp/app/shared/metis/posting-content/posting-content.components.ts
+++ b/src/main/webapp/app/shared/metis/posting-content/posting-content.components.ts
@@ -1,4 +1,4 @@
-import { ChangeDetectionStrategy, Component, EventEmitter, Input, OnChanges, OnDestroy, OnInit, Output, input, output, signal } from '@angular/core';
+import { ChangeDetectionStrategy, Component, EventEmitter, Input, OnChanges, OnDestroy, OnInit, Output, inject, input, output, signal } from '@angular/core';
 import { Params } from '@angular/router';
 import { faAngleDown, faAngleUp } from '@fortawesome/free-solid-svg-icons';
 import { Post } from 'app/entities/metis/post.model';
@@ -23,6 +23,8 @@ import { ArtemisSharedModule } from 'app/shared/shared.module';
     imports: [ArtemisSharedModule, FaIconComponent, NgStyle, PostingContentPartComponent, LinkPreviewContainerComponent],
 })
 export class PostingContentComponent implements OnInit, OnChanges, OnDestroy {
+    private metisService = inject(MetisService);
+
     @Input() content?: string;
     @Input() previewMode?: boolean;
     @Input() author?: User;
@@ -49,8 +51,6 @@ export class PostingContentComponent implements OnInit, OnChanges, OnDestroy {
     faAngleUp = faAngleUp;
     faAngleDown = faAngleDown;
 
-    constructor(private metisService: MetisService) {}
-
     /**
      * on initialization: calculate posting parts to be displayed
      */
diff --git a/src/main/webapp/app/shared/metis/posting-create-edit-modal/answer-post-create-edit-modal/answer-post-create-edit-modal.component.ts b/src/main/webapp/app/shared/metis/posting-create-edit-modal/answer-post-create-edit-modal/answer-post-create-edit-modal.component.ts
index c7fa757323b3..2568df40e6a7 100644
--- a/src/main/webapp/app/shared/metis/posting-create-edit-modal/answer-post-create-edit-modal/answer-post-create-edit-modal.component.ts
+++ b/src/main/webapp/app/shared/metis/posting-create-edit-modal/answer-post-create-edit-modal/answer-post-create-edit-modal.component.ts
@@ -1,4 +1,4 @@
-import { Component, EventEmitter, Input, Output, ViewContainerRef, ViewEncapsulation } from '@angular/core';
+import { Component, EventEmitter, Input, Output, ViewContainerRef, ViewEncapsulation, inject } from '@angular/core';
 import { PostingCreateEditModalDirective } from 'app/shared/metis/posting-create-edit-modal/posting-create-edit-modal.directive';
 import { AnswerPost } from 'app/entities/metis/answer-post.model';
 import { NgbModal } from '@ng-bootstrap/ng-bootstrap';
@@ -23,13 +23,9 @@ export class AnswerPostCreateEditModalComponent extends PostingCreateEditModalDi
     isInputOpen = false;
     @Output() postingUpdated = new EventEmitter<Posting>();
 
-    constructor(
-        protected metisService: MetisService,
-        protected modalService: NgbModal,
-        protected formBuilder: FormBuilder,
-    ) {
-        super(metisService, modalService, formBuilder);
-    }
+    protected metisService = inject(MetisService);
+    protected modalService = inject(NgbModal);
+    protected formBuilder = inject(FormBuilder);
 
     /**
      * renders the ng-template to edit or create an answerPost
diff --git a/src/main/webapp/app/shared/metis/posting-create-edit-modal/post-create-edit-modal/post-create-edit-modal.component.ts b/src/main/webapp/app/shared/metis/posting-create-edit-modal/post-create-edit-modal/post-create-edit-modal.component.ts
index 19aeb661ad7b..a1c40e9cd568 100644
--- a/src/main/webapp/app/shared/metis/posting-create-edit-modal/post-create-edit-modal/post-create-edit-modal.component.ts
+++ b/src/main/webapp/app/shared/metis/posting-create-edit-modal/post-create-edit-modal/post-create-edit-modal.component.ts
@@ -1,4 +1,4 @@
-import { Component, Input, OnChanges, OnInit } from '@angular/core';
+import { Component, Input, OnChanges, OnInit, inject } from '@angular/core';
 import { PostingCreateEditModalDirective } from 'app/shared/metis/posting-create-edit-modal/posting-create-edit-modal.directive';
 import {
     NgbAccordionBody,
@@ -61,6 +61,11 @@ import { ArtemisSharedCommonModule } from 'app/shared/shared-common.module';
     ],
 })
 export class PostCreateEditModalComponent extends PostingCreateEditModalDirective<Post> implements OnInit, OnChanges {
+    protected metisService = inject(MetisService);
+    protected modalService = inject(NgbModal);
+    protected formBuilder = inject(FormBuilder);
+    private router = inject(Router);
+
     @Input() isCommunicationPage: boolean;
 
     exercises?: Exercise[];
@@ -81,15 +86,6 @@ export class PostCreateEditModalComponent extends PostingCreateEditModalDirectiv
     faAngleUp = faAngleUp;
     faAngleDown = faAngleDown;
 
-    constructor(
-        protected metisService: MetisService,
-        protected modalService: NgbModal,
-        protected formBuilder: FormBuilder,
-        private router: Router,
-    ) {
-        super(metisService, modalService, formBuilder);
-    }
-
     /**
      * on initialization: reset all input field of the modal, determine the post context;
      * subscribe to the form control changes of the context selector in order to show the Announcement info box on selection;
diff --git a/src/main/webapp/app/shared/metis/posting-create-edit-modal/post-create-edit-modal/post-tag-selector/post-tag-selector.component.ts b/src/main/webapp/app/shared/metis/posting-create-edit-modal/post-create-edit-modal/post-tag-selector/post-tag-selector.component.ts
index 6a4be5084f27..398655cf6d42 100644
--- a/src/main/webapp/app/shared/metis/posting-create-edit-modal/post-create-edit-modal/post-tag-selector/post-tag-selector.component.ts
+++ b/src/main/webapp/app/shared/metis/posting-create-edit-modal/post-create-edit-modal/post-tag-selector/post-tag-selector.component.ts
@@ -1,4 +1,4 @@
-import { AfterContentChecked, ChangeDetectorRef, Component, ElementRef, EventEmitter, Input, OnChanges, OnDestroy, OnInit, Output, ViewChild } from '@angular/core';
+import { AfterContentChecked, ChangeDetectorRef, Component, ElementRef, EventEmitter, Input, OnChanges, OnDestroy, OnInit, Output, ViewChild, inject } from '@angular/core';
 import { Observable, Subscription, map, startWith } from 'rxjs';
 import { MetisService } from 'app/shared/metis/metis.service';
 import { COMMA, ENTER, TAB } from '@angular/cdk/keycodes';
@@ -34,6 +34,9 @@ import { ArtemisSharedCommonModule } from 'app/shared/shared-common.module';
     ],
 })
 export class PostTagSelectorComponent implements OnInit, OnChanges, OnDestroy, AfterContentChecked {
+    private metisService = inject(MetisService);
+    private changeDetector = inject(ChangeDetectorRef);
+
     @Input() postTags?: string[];
 
     @Output() postTagsChange = new EventEmitter<string[]>();
@@ -51,11 +54,6 @@ export class PostTagSelectorComponent implements OnInit, OnChanges, OnDestroy, A
     // Icons
     faTimes = faTimes;
 
-    constructor(
-        private metisService: MetisService,
-        private changeDetector: ChangeDetectorRef,
-    ) {}
-
     /**
      * on initialization: subscribes to existing post tags used in this course (will be shown in dropdown of tag selector),
      * copies the input post tags to string tags, so that they are shown in the selector
diff --git a/src/main/webapp/app/shared/metis/posting-create-edit-modal/posting-create-edit-modal.directive.ts b/src/main/webapp/app/shared/metis/posting-create-edit-modal/posting-create-edit-modal.directive.ts
index 9461099accd6..2c6b3ef28bca 100644
--- a/src/main/webapp/app/shared/metis/posting-create-edit-modal/posting-create-edit-modal.directive.ts
+++ b/src/main/webapp/app/shared/metis/posting-create-edit-modal/posting-create-edit-modal.directive.ts
@@ -1,4 +1,4 @@
-import { Directive, OnChanges, OnInit, TemplateRef, ViewChild } from '@angular/core';
+import { Directive, OnChanges, OnInit, TemplateRef, ViewChild, inject } from '@angular/core';
 import { FormBuilder } from '@angular/forms';
 import { NgbModal } from '@ng-bootstrap/ng-bootstrap';
 import { Posting } from 'app/entities/metis/posting.model';
@@ -7,17 +7,13 @@ import { PostingCreateEditDirective } from 'app/shared/metis/posting-create-edit
 
 @Directive()
 export abstract class PostingCreateEditModalDirective<T extends Posting> extends PostingCreateEditDirective<T> implements OnInit, OnChanges {
+    protected metisService = inject(MetisService);
+    protected modalService = inject(NgbModal);
+    protected formBuilder = inject(FormBuilder);
+
     @ViewChild('postingEditor') postingEditor: TemplateRef<any>;
     modalTitle: string;
 
-    protected constructor(
-        protected metisService: MetisService,
-        protected modalService: NgbModal,
-        protected formBuilder: FormBuilder,
-    ) {
-        super(metisService, modalService, formBuilder);
-    }
-
     /**
      * on initialization: sets the content, and the modal title (edit or create)
      */
diff --git a/src/main/webapp/app/shared/metis/posting-create-edit.directive.ts b/src/main/webapp/app/shared/metis/posting-create-edit.directive.ts
index 5d327cbe390e..d4fdffa8e3b3 100644
--- a/src/main/webapp/app/shared/metis/posting-create-edit.directive.ts
+++ b/src/main/webapp/app/shared/metis/posting-create-edit.directive.ts
@@ -1,4 +1,4 @@
-import { Directive, EventEmitter, Input, OnChanges, OnInit, Output } from '@angular/core';
+import { Directive, EventEmitter, Input, OnChanges, OnInit, Output, inject } from '@angular/core';
 import { FormBuilder, FormGroup } from '@angular/forms';
 import { NgbModal, NgbModalRef } from '@ng-bootstrap/ng-bootstrap';
 import { Posting } from 'app/entities/metis/posting.model';
@@ -12,6 +12,10 @@ const MAX_CONTENT_LENGTH = 5000;
 
 @Directive()
 export abstract class PostingCreateEditDirective<T extends Posting> implements OnInit, OnChanges {
+    protected metisService = inject(MetisService);
+    protected modalService = inject(NgbModal);
+    protected formBuilder = inject(FormBuilder);
+
     @Input() posting: T;
     @Output() onCreate: EventEmitter<T> = new EventEmitter<T>();
     @Output() isModalOpen = new EventEmitter<void>();
@@ -24,12 +28,6 @@ export abstract class PostingCreateEditDirective<T extends Posting> implements O
     formGroup: FormGroup;
     readonly EditType = PostingEditType;
 
-    protected constructor(
-        protected metisService: MetisService,
-        protected modalService: NgbModal,
-        protected formBuilder: FormBuilder,
-    ) {}
-
     get editType(): PostingEditType {
         return this.posting.id ? PostingEditType.UPDATE : PostingEditType.CREATE;
     }
diff --git a/src/main/webapp/app/shared/metis/posting-footer/post-footer/post-footer.component.ts b/src/main/webapp/app/shared/metis/posting-footer/post-footer/post-footer.component.ts
index 1855040e260e..60b452c751c6 100644
--- a/src/main/webapp/app/shared/metis/posting-footer/post-footer/post-footer.component.ts
+++ b/src/main/webapp/app/shared/metis/posting-footer/post-footer/post-footer.component.ts
@@ -11,6 +11,7 @@ import {
     SimpleChanges,
     ViewChild,
     ViewContainerRef,
+    inject,
 } from '@angular/core';
 import { PostingFooterDirective } from 'app/shared/metis/posting-footer/posting-footer.directive';
 import { Post } from 'app/entities/metis/post.model';
@@ -36,6 +37,9 @@ interface PostGroup {
     imports: [AnswerPostComponent, AnswerPostCreateEditModalComponent, ArtemisSharedCommonModule],
 })
 export class PostFooterComponent extends PostingFooterDirective<Post> implements OnInit, OnDestroy, AfterContentChecked, OnChanges {
+    private metisService = inject(MetisService);
+    protected changeDetector = inject(ChangeDetectorRef);
+
     @Input() lastReadDate?: dayjs.Dayjs;
     @Input() readOnlyMode = false;
     @Input() previewMode = false;
@@ -58,13 +62,6 @@ export class PostFooterComponent extends PostingFooterDirective<Post> implements
     courseId!: number;
     groupedAnswerPosts: PostGroup[] = [];
 
-    constructor(
-        private metisService: MetisService,
-        protected changeDetector: ChangeDetectorRef,
-    ) {
-        super();
-    }
-
     ngOnInit(): void {
         this.courseId = this.metisService.getCourse().id!;
         this.isAtLeastTutorInCourse = this.metisService.metisUserIsAtLeastTutorInCourse();
diff --git a/src/main/webapp/app/shared/metis/posting-markdown-editor/posting-markdown-editor.component.ts b/src/main/webapp/app/shared/metis/posting-markdown-editor/posting-markdown-editor.component.ts
index f3a8f9cd6637..89da98f22beb 100644
--- a/src/main/webapp/app/shared/metis/posting-markdown-editor/posting-markdown-editor.component.ts
+++ b/src/main/webapp/app/shared/metis/posting-markdown-editor/posting-markdown-editor.component.ts
@@ -62,6 +62,14 @@ import { NgStyle } from '@angular/common';
     imports: [ArtemisMarkdownEditorModule, PostingContentComponent, NgStyle],
 })
 export class PostingMarkdownEditorComponent implements OnInit, ControlValueAccessor, AfterContentChecked, AfterViewInit {
+    private cdref = inject(ChangeDetectorRef);
+    private metisService = inject(MetisService);
+    private courseManagementService = inject(CourseManagementService);
+    private lectureService = inject(LectureService);
+    private channelService = inject(ChannelService);
+    viewContainerRef = inject(ViewContainerRef);
+    private positionBuilder = inject(OverlayPositionBuilder);
+
     @ViewChild(MarkdownEditorMonacoComponent, { static: true }) markdownEditor: MarkdownEditorMonacoComponent;
 
     @Input() maxContentLength: number;
@@ -83,16 +91,6 @@ export class PostingMarkdownEditorComponent implements OnInit, ControlValueAcces
     protected readonly MarkdownEditorHeight = MarkdownEditorHeight;
     private overlay = inject(Overlay);
 
-    constructor(
-        private cdref: ChangeDetectorRef,
-        private metisService: MetisService,
-        private courseManagementService: CourseManagementService,
-        private lectureService: LectureService,
-        private channelService: ChannelService,
-        public viewContainerRef: ViewContainerRef,
-        private positionBuilder: OverlayPositionBuilder,
-    ) {}
-
     /**
      * on initialization: sets commands that will be available as formatting buttons during creation/editing of postings
      */
diff --git a/src/main/webapp/app/shared/metis/posting-reactions-bar/answer-post-reactions-bar/answer-post-reactions-bar.component.ts b/src/main/webapp/app/shared/metis/posting-reactions-bar/answer-post-reactions-bar/answer-post-reactions-bar.component.ts
index 711498ed023c..5bcae58205d4 100644
--- a/src/main/webapp/app/shared/metis/posting-reactions-bar/answer-post-reactions-bar/answer-post-reactions-bar.component.ts
+++ b/src/main/webapp/app/shared/metis/posting-reactions-bar/answer-post-reactions-bar/answer-post-reactions-bar.component.ts
@@ -1,4 +1,4 @@
-import { Component, EventEmitter, Input, OnChanges, OnInit, Output, output } from '@angular/core';
+import { Component, EventEmitter, Input, OnChanges, OnInit, Output, inject, output } from '@angular/core';
 import { Reaction } from 'app/entities/metis/reaction.model';
 import { PostingsReactionsBarDirective } from 'app/shared/metis/posting-reactions-bar/posting-reactions-bar.directive';
 import { AnswerPost } from 'app/entities/metis/answer-post.model';
@@ -55,9 +55,7 @@ export class AnswerPostReactionsBarComponent extends PostingsReactionsBarDirecti
     @Input() isEmojiCount: boolean = false;
     @Output() postingUpdated = new EventEmitter<void>();
 
-    constructor(metisService: MetisService) {
-        super(metisService);
-    }
+    protected metisService = inject(MetisService);
 
     ngOnInit() {
         super.ngOnInit();
diff --git a/src/main/webapp/app/shared/metis/posting-reactions-bar/post-reactions-bar/post-reactions-bar.component.ts b/src/main/webapp/app/shared/metis/posting-reactions-bar/post-reactions-bar/post-reactions-bar.component.ts
index c0f6160c350d..d1918010e905 100644
--- a/src/main/webapp/app/shared/metis/posting-reactions-bar/post-reactions-bar/post-reactions-bar.component.ts
+++ b/src/main/webapp/app/shared/metis/posting-reactions-bar/post-reactions-bar/post-reactions-bar.component.ts
@@ -1,4 +1,4 @@
-import { Component, EventEmitter, Input, OnChanges, OnDestroy, OnInit, Output, ViewChild, output } from '@angular/core';
+import { Component, EventEmitter, Input, OnChanges, OnDestroy, OnInit, Output, ViewChild, inject, output } from '@angular/core';
 import { Reaction } from 'app/entities/metis/reaction.model';
 import { Post } from 'app/entities/metis/post.model';
 import { PostingsReactionsBarDirective } from 'app/shared/metis/posting-reactions-bar/posting-reactions-bar.directive';
@@ -50,6 +50,8 @@ import { ArtemisSharedCommonModule } from 'app/shared/shared-common.module';
     ],
 })
 export class PostReactionsBarComponent extends PostingsReactionsBarDirective<Post> implements OnInit, OnChanges, OnDestroy {
+    private accountService = inject(AccountService);
+
     pinTooltip: string;
     displayPriority: DisplayPriority;
     canPin = false;
@@ -84,12 +86,7 @@ export class PostReactionsBarComponent extends PostingsReactionsBarDirective<Pos
     @Input() hoverBar: boolean = true;
     @ViewChild('createEditModal') createEditModal!: PostCreateEditModalComponent;
 
-    constructor(
-        metisService: MetisService,
-        private accountService: AccountService,
-    ) {
-        super(metisService);
-    }
+    protected metisService = inject(MetisService);
 
     isAnyReactionCountAboveZero(): boolean {
         return Object.values(this.reactionMetaDataMap).some((reaction) => reaction.count >= 1);
diff --git a/src/main/webapp/app/shared/metis/posting-reactions-bar/posting-reactions-bar.directive.ts b/src/main/webapp/app/shared/metis/posting-reactions-bar/posting-reactions-bar.directive.ts
index c8877be83b9c..13c043f3fe98 100644
--- a/src/main/webapp/app/shared/metis/posting-reactions-bar/posting-reactions-bar.directive.ts
+++ b/src/main/webapp/app/shared/metis/posting-reactions-bar/posting-reactions-bar.directive.ts
@@ -1,4 +1,4 @@
-import { Directive, EventEmitter, Input, OnChanges, OnInit, Output, output } from '@angular/core';
+import { Directive, EventEmitter, Input, OnChanges, OnInit, Output, inject, output } from '@angular/core';
 import { Posting } from 'app/entities/metis/posting.model';
 import { MetisService } from 'app/shared/metis/metis.service';
 import { EmojiData } from '@ctrl/ngx-emoji-mart/ngx-emoji';
@@ -44,6 +44,8 @@ interface ReactionMetaDataMap {
 
 @Directive()
 export abstract class PostingsReactionsBarDirective<T extends Posting> implements OnInit, OnChanges {
+    protected metisService = inject(MetisService);
+
     pinEmojiId: string = PIN_EMOJI_ID;
     archiveEmojiId: string = ARCHIVE_EMOJI_ID;
     speechBalloonId: string = SPEECH_BALLOON_ID;
@@ -104,8 +106,6 @@ export abstract class PostingsReactionsBarDirective<T extends Posting> implement
      */
     reactionMetaDataMap: ReactionMetaDataMap = {};
 
-    protected constructor(protected metisService: MetisService) {}
-
     /**
      * on initialization: updates the current posting and its reactions,
      * invokes metis service to check user authority
diff --git a/src/main/webapp/app/shared/metis/reaction.service.ts b/src/main/webapp/app/shared/metis/reaction.service.ts
index b91bb9ef145f..78402334d69b 100644
--- a/src/main/webapp/app/shared/metis/reaction.service.ts
+++ b/src/main/webapp/app/shared/metis/reaction.service.ts
@@ -1,4 +1,4 @@
-import { Injectable } from '@angular/core';
+import { Injectable, inject } from '@angular/core';
 import { HttpClient, HttpResponse } from '@angular/common/http';
 import { Observable } from 'rxjs';
 import { map } from 'rxjs/operators';
@@ -9,9 +9,9 @@ type EntityResponseType = HttpResponse<Reaction>;
 
 @Injectable({ providedIn: 'root' })
 export class ReactionService {
-    public resourceUrl = 'api/courses/';
+    protected http = inject(HttpClient);
 
-    constructor(protected http: HttpClient) {}
+    public resourceUrl = 'api/courses/';
 
     /**
      * creates a reaction