in vscode under view dont have my developer code example

Example 1: what to do when you have a button in scene builder but it doesn't appear in yellow text in the controller?

Try to make sure that the fxml page is connected to the controller
Usually in the border pane line

Example 2: why does my react project dosent have any class

import React, {Component} from 'react';
import logo from './logo.svg';
import './App.css';

class App extends Component {
  render() {
    return (
      

        

          
          

            Edit src/App.js and save to reload.
          
          
            Learn React
          
        
      
    );
  }
}
export default App;