how to redirect to in react.js in class componrnt code example

Example 1: redirect in react

import React from 'react'
import  { Redirect } from 'react-router-dom'

const ProtectedComponent = () => {
  if (authFails)
    return <Redirect to='/login'  />
  }
  return <div> My Protected Component </div>
}

Example 2: how to redirect react router from the app components

state = { redirect: null };

render() {
  if (this.state.redirect) {
    return <Redirect to={this.state.redirect} />
  }
  return(
  // Your Code goes here
  )
}

// update the redirect
 this.setState({ redirect: "/someRoute" });