import { Injectable } from '@angular/core'; import {HttpClient} from "@angular/common/http"; import {Observable} from "rxjs"; import {StudentCourseInterface} from "./StudentCourseInterface"; import {SubjectInterface} from "./subjectInterface"; @Injectable({ providedIn: 'root' }) export class SubjectService { url = "http://localhost:8080/api/subjects/all" constructor(private http: HttpClient) { } getAllSubjects(): Observable { return this.http.get(this.url) } }