2. app.module.ts

1. import http module
   
   import { HttpModule } from '@angular/http';
2. import forms module
   
   import { FormsModule } from '@angular/forms';
3. import all the components you have created

import { NgModule }      from '@angular/core';

import { BrowserModule } from '@angular/platform-browser';

import { HttpModule } from '@angular/http';

import { FormsModule } from '@angular/forms';

import { AppComponent }  from './app.component';

import { LoginComponent }  from './login.component';

@NgModule({

  imports:      [ BrowserModule, HttpModule, FormsModule ],

  declarations: [ AppComponent, LoginComponent ],

  bootstrap:    [ LoginComponent ]

})

export class AppModule { }