second.component.ts

import { Component, OnInit } from '@angular/core';
import { EchoService } from '../echo.service';
import { Observable } from 'rxjs';
@Component({
   templateUrl: `second.component.html`,
   styleUrls: ['./second.component.css']
})
export class SecondComponent implements OnInit {
   public response: Observable<any>;
   constructor(private echoService: EchoService) {}
   public ngOnInit(): void {
      this.response = this.echoService.makeCall();
   }
}