Can you have code run in a terminal and applet?

Question

For example in my program in Main we enter the data for menu and amount of the exchange but the result is displayed in an applet.
works great in the terminal window.
but when using an applet it will not work.
import java.awt.*;
import java.applet.*;
import javax.swing.* ;
import TerminalIO.*;
public class MetricConversionMain    {
         final static String CRLF = "\n" ;     
         static String msgOut ;                   
     public static void main ( String[] args )     {
        int valid  = 0;
        int choose = 0;
        double numUnits = 0.0; 
        double convertedUnits = 0.0;
                              // title, class, author and version info  to
     KeyboardReader entries = new KeyboardReader(); //object for keyboard entry
     while (valid != 1) {
            // menu for conversion selection 1 thru 4          
     System.out.println("\n\t\t1 \tFor inches to centimeters");
      System.out.println("\t\t2 \tFor quarts to liters");
      System.out.println("\t\t3 \tFor pounds to kilograms");
      System.out.println("\t\t4 \tFor miles to Kilometer");
          choose = // GW corrected my code to the present prior I was choose = choose.readInt etc etc
        entries.readInt("\n\t\tPlease choose one of the following menu items to convert: ");
      if (choose == 1 || choose == 2 || choose == 3 || choose ==4 ) {
           valid = 1 ;
      else {
           System.out.println("Invalid Selection.") ;
      switch (choose) {
          case 1 : System.out.println("Converting inches to centimeters... ") ; break ;
          case 2 : System.out.println("Converting quarts to liters... ") ; break ;
          case 3 : System.out.println("Converting pounds to kilograms... ") ; break ;
          case 4 : System.out.println("Converting miles to kilometers... ") ; break ;
     } // Error checking, reiterates the user's current choice prior to next question
     System.out.println();
     KeyboardReader useEntry = new KeyboardReader(); //object for keyboard entry
          numUnits =
        useEntry.readDouble("\n\t\tNow please enter the amount you wish to convert: ");
          System.out.println ("\t\tThe conversion comes to  " + numUnits);
     //KeyEntry equal = new KeyEntry();   
     //equal.setNumUnits
    //(useEntry.readDouble("\n\t\tNow please enter the amount you wish to convert: "));
     //System.out.println("\t\tThe conversion comes to  " + getnumUnits());
     switch (choose) {
          case 1 : Inch fromInch = new Inch(numUnits); break ;}
     case 2 : Quart fromQuart = new Quart(numUnits) ; break ;
          /*     case 3 : Pound fromPound = new Pound( numUnits) ; break ;
          case 4 : Mile fromMile = new Mile(numUnits) ; break ;
     } // Switch statement that performs the correct conversion based on the user's input*/
               // Instantiate US Standard Objects
     /*     Inch fromInch = new Inch(1) ;
          Foot fromFoot = new Foot(1) ;
          Yard fromYard = new Yard(1) ;
          Mile fromMile = new Mile(1) ;
          Ounce fromOunce = new Ounce(1) ;
          Quart fromQuart = new Quart(1) ;
          Gallon fromGallon = new Gallon(1) ;
          Pound fromPound = new Pound(1) ;
          // Instantiate Metric Objects          
          Centimeter fromCentimeter = new Centimeter(1) ;
          Meter fromMeter = new Meter(1) ;
          Kilometer fromKilometer = new Kilometer(1) ;
          Gram fromGram = new Gram(1) ;
          Liter fromLiter = new Liter(1) ;
          Kilogram fromKilogram = new Kilogram(1) ;
          LitGal fromLitGal = new LitGal(1) ; */
     }     //  main
}     //     class MetricConversionMainsupper classpublic class SuperConverter        {
     *     This class is the super class for a series of
     *     subclasses that perform conversion from metric to
     *     imperial or vice versa.
     protected double numUnits ;
     protected double convertedUnits ;
     protected double factor ;
     // Constructor
     public SuperConverter ( double argNumUnits, double argFactor )  {     
     numUnits = argNumUnits ;
     factor = argFactor ;
     convertedUnits = numUnits * factor ; //convert() ;
     }     // Constructor
     protected double getnumUnits()     {
          return numUnits ;
     protected void setnumUnits     ( double argNumUnits )     {
          numUnits = argNumUnits ;
     protected double convert  () {
          this.convertedUnits = numUnits * factor ;     
          return convertedUnits ;     
     public double getconvertedUnits()     {
          this.convertedUnits = convert() ;
          return convertedUnits ;
}     //  end SuperConverter Classsubclass that works[public class Inch extends SuperConverter {
     public Inch      (double argNumUnits)
          super ( argNumUnits, 0.914 ) ;
          System.out.print   ("     ") ;
     if (argNumUnits > 1)
               System.out.println(argNumUnits + " inches = " + convertedUnits + " centimeters") ;
          else
               System.out.println(argNumUnits + " inch = " + convertedUnits + " centimeters") ;
/code]
The code I want to use  with the applet is import java.awt.*;
import java.applet.*;
import javax.swing.* ;
public class Inch extends SuperConverter {
     final static String CRLF = "\n" ;     
     static String msgOut ;          
     public Inch      (double argNumUnits)
          super ( argNumUnits, 2.54 ) ;
          System.out.print ("     ") ;
          if (argNumUnits > 1)
          {   msgOut = "     Metric Conversion Chart" + CRLF + CRLF;
          msgOut += "     US Standard to Metric" + CRLF ;
     msgOut += "     -------------------------------------------------" + " " + CRLF ;
               msgOut = argNumUnits + " inches = " + convertedUnits + " centimeters" ;
          else
          {   msgOut = "     Metric Conversion Chart" + CRLF + CRLF;
          msgOut += "     US Standard to Metric" + CRLF ;
     msgOut += "     -------------------------------------------------" + " " + CRLF ;
               msgOut += argNumUnits + " inch = " + convertedUnits + " centimeters" + CRLF + CRLF + CRLF ;
          }     JOptionPane.showMessageDialog ( null, msgOut ) ;          
}

Answer 1

The issue I have is the applet/window appears behind the terminal window. below is the code that is use for the window. I want to have the window appear infront of the terminal window.import java.awt.*;
import java.applet.*;
import javax.swing.* ;
public class Pound extends SuperConverter {
    final static String CRLF = "\n" ;     
         static String msgOut ;     
     public Pound      (double argNumUnits)
          super ( argNumUnits, 0.454 ) ;     
          System.out.print   ("     ") ;     
          if (argNumUnits > 1)
          {   msgOut = "     Metric Conversion Chart" + CRLF + CRLF;             
              msgOut +=  "     Metric to US Standard" + CRLF ;
              msgOut +=  "     -------------------------------------------------" + "         " + CRLF ;
               msgOut += argNumUnits + " pounds = " + convertedUnits + " kilograms" + CRLF + CRLF + CRLF ;
          else
          {   msgOut = "     Metric Conversion Chart" + CRLF + CRLF;
              msgOut +=  "     Metric to US Standard" + CRLF ;
              msgOut +=  "     -------------------------------------------------" + "         " + CRLF ;
               msgOut += argNumUnits + " pound = " + convertedUnits + " kilograms" + CRLF + CRLF + CRLF ;
          }   JOptionPane.showMessageDialog ( null, msgOut ) ;
}