Need help cleaning this up: Giving me errors because I don\'t have Main but when

Question

Need help cleaning this up: Giving me errors because I don't have Main but when I put it in it doesn't run. Using Netbeans Java - Java Class Library.

import java.applet.Applet;
import java.awt.*;
import java.awt.event.*;

public class Temper extends Applet {
  
  
  
        private final Button Calculate;
   private Label lblFahrenheit;
        private Label lblCelsius;
        private TextField txtFahrenheit;
   private TextField txtCelsius;
        private final Panel p;
    private String label;
}
    /**
     * Initialization method that will be called after the applet is loaded into
     * the browser.
     */
        @Override
    public static void main(String[] args)
        // TODO start asynchronous download of heavy resources
    }
    {
       setBackground (Color.blue);
       p = new Panel ();
       p.setLayout (new GridLayout (5, 1, 12, 12));
       txtFahrenheit = setField (p, txtFahrenheit, lblFahrenheit, "Fahrenheit");
       txtCelsius = setField (p, txtCelsius, lblCelsius, "Celsius");
       Calculate = new Button ("Calculate");
       Calculate.addActionListener ((ActionListener) new CalculateListener ());
       p.add (Calculate);
       add (p);
   } // method init

    private TextField setField(Panel p, TextField txtFahrenheit, Label lblFahrenheit, String fahrenheit) {
        throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.
    }
  
  
// Inner class to listen for the Calculate button.
   class CalculateListener implements ActionListener
   {  
       public void actionPerformed (ActionEvent event)
       {
           double fahrenheit, celsius;
           fahrenheit = getDouble(txtFahrenheit);
           celsius = (fahrenheit - 32) * 5 / 9;     
           txtCelsius.setText ("celsius");
       } // method actionPerformed
   } // class CalculateListener      

Explanation / Answer

CORRECTED CODE:-

I have added main and corrected that problem but it is asking getDouble method defination which you haven't defined.Define it and remaining errors are corrected

Code:-

import java.applet.Applet;
import java.awt.*;
import java.awt.event.*;
import java.lang.*;

public class Temper extends Applet {
  
  
  
private final Button Calculate;
private Label lblFahrenheit;
private Label lblCelsius;
private TextField txtFahrenheit;
private TextField txtCelsius;
private final Panel p;
private String label;
/**
* Initialization method that will be called after the applet is loaded into
* the browser.
*/

public static void main(String[] args){
// TODO start asynchronous download of heavy resources
}
{
setBackground (Color.blue);
p = new Panel ();
p.setLayout (new GridLayout (5, 1, 12, 12));
txtFahrenheit = setField (p, txtFahrenheit, lblFahrenheit, "Fahrenheit");
txtCelsius = setField (p, txtCelsius, lblCelsius, "Celsius");
Calculate = new Button ("Calculate");
Calculate.addActionListener ((ActionListener) new CalculateListener ());
p.add (Calculate);
add (p);
} // method init
private TextField setField(Panel p, TextField txtFahrenheit, Label lblFahrenheit, String fahrenheit) {
throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.
}
  
  
// Inner class to listen for the Calculate button.
class CalculateListener implements ActionListener
{
public void actionPerformed (ActionEvent event)
{
double fahrenheit, celsius;
fahrenheit = getDouble(txtFahrenheit);
celsius = (fahrenheit - 32) * 5 / 9;   
txtCelsius.setText ("celsius");
} // method actionPerformed
} // class CalculateListener
  
}

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