A new dilema, code review for newbie

Question

OK, now my dilema is taking input values from an applet and working them into my methods. I have read several tutorials, but I'm not finding any help. So far, I have written this code which does not complie (as expected). My methods seem solid, but my integration of the methods into an applet is far from decent. I have a feeling that I'm just going in circles here.
package membership;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.lang.String;
public class MemberFee extends JApplet
String typeMem;
char memType;
int numKids,
numYears;
double memFee,
kFee,
iFee,
fFee,
totalFee;
boolean endProgram = false;
//DecimalFormat twoDigit = new DecimalFormat("0.00"); //page 171-172 in New Dietel Book
public void init ()
while (!typeMem == 'Q')
memType = JOptionPane.showInputDialog("Enter Type of Member: ");
typeMem = memType.charAt (0);
typeMem = Character.toUpperCase(typeMem);
if (typeMem == 'F')
numYears = JOptionPane.showInputDialog("Enter number of years:");
if(numYears<0)
JOptionPane.showMessageDialog(null,"Enter a positive value", "You have made an error", JOptionPane.ERROR_MESSAGE);
numKids = JOptionPane.showInputDialog("Enter number of kids:");
if(numKids<0)
JOptionPane.showMessageDialog(null,"Enter a positive value", "You have made an error", JOptionPane.ERROR_MESSAGE);
else
memFee = fFee;
JOptionPane.showMessageDialog (null, "Type of Member: " + "Years" +
"\nnumKids: " + (numKids) +
"\nnumYears: " + (numYears),
"Total", JOptionPane.PLAIN_MESSAGE);
else if (typeMem =='I')
numYears = JOptionPane.showInputDialog("Enter number of years:");
if(numYears<0)
JOptionPane.showMessageDialog(null,"Enter a positive value", "You have made an error", JOptionPane.ERROR_MESSAGE);
else
memFee = iFee;
JOptionPane.showMessageDialog (null, "Type of Member: " + "Years" +
"\nnumYears: " + (numYears),
"Total", JOptionPane.PLAIN_MESSAGE);
JOptionPane.showMessageDialog(null,JOptionPane.showMessageDialog (null, "Type of Member: " + "Years" +
"\nnumKids: " + (numKids) +
"\nnumYears: " + (numYears),
"Total", JOptionPane.PLAIN_MESSAGE));
}//end if
}//end while
//begin methods
//fee for individual method
public static double iFee(int numYears)
double memFee;
if (numYears >= 2)
memFee = 1500.00;
else
memFee = 1900.00;
return memFee;
// end individual method
//fees for family method
public static double fFee (int numYears, int numKids)
double memFee;
double kFee;
if (numKids <= 2)
kFee = 0.00 ;
else
kFee = (numKids * 250.00);
//end kids calculation
if (numYears >= 2)
memFee =2500.00;
else
memFee= 3000.00 + kFee;
return memFee;
//end family method
This is what I think my problems are:
1. I am confusing java application commands with java applet commands (shouldn't they be similar?)
2. Can applets even allow for pop up dialog boxes?
This problem keeps me up at night. Any help would be great.
THanks,

Answer 1

Hi,
probably you need learn more Java and start with small examples. I kind of fixed the compilation errors, but I don't know what the output might be. good luck.
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.lang.String;
public class MemberFee extends JApplet
     String typeMem;
     String memType;
     int numKids,
     numYears;
     double memFee,
     kFee,
     iFee,
     fFee,
     totalFee;
     boolean endProgram = false;
     //DecimalFormat twoDigit = new DecimalFormat("0.00"); //page 171-172 in New Dietel Book
     public void init ()
     while (!typeMem.equals("Q"))
     memType = JOptionPane.showInputDialog("Enter Type of Member: ");
     typeMem = memType.substring(0,0);
     typeMem = typeMem.toUpperCase();
     if (typeMem.equals("F"))
     numYears = Integer.parseInt(JOptionPane.showInputDialog("Enter number of years:"));
     if(numYears<0)
     JOptionPane.showMessageDialog(null,"Enter a positive value", "You have made an error", JOptionPane.ERROR_MESSAGE);
     numKids = Integer.parseInt(JOptionPane.showInputDialog("Enter number of kids:"));
     if(numKids<0)
     JOptionPane.showMessageDialog(null,"Enter a positive value", "You have made an error", JOptionPane.ERROR_MESSAGE);
     else
     memFee = fFee;
     JOptionPane.showMessageDialog (null, "Type of Member: " + "Years" +
     "\nnumKids: " + (numKids) +
     "\nnumYears: " + (numYears),
     "Total", JOptionPane.PLAIN_MESSAGE);
     else if (typeMem.equals("I"))
     numYears = Integer.parseInt(JOptionPane.showInputDialog("Enter number of years:"));
     if(numYears<0)
     JOptionPane.showMessageDialog(null,"Enter a positive value", "You have made an error", JOptionPane.ERROR_MESSAGE);
     else
     memFee = iFee;
     JOptionPane.showMessageDialog (null, "Type of Member: " + "Years" +
     "\nnumYears: " + (numYears),
     "Total", JOptionPane.PLAIN_MESSAGE);
     JOptionPane.showMessageDialog (null, "Type of Member: " + "Years" +
     "\nnumKids: " + (numKids) +
     "\nnumYears: " + (numYears),
     "Total", JOptionPane.PLAIN_MESSAGE);
     }//end if
     }//end while
     //begin methods
     //fee for individual method
     public static double iFee(int numYears)
     double memFee;
     if (numYears >= 2)
     memFee = 1500.00;
     else
     memFee = 1900.00;
     return memFee;
     // end individual method
     //fees for family method
     public static double fFee (int numYears, int numKids)
     double memFee;
     double kFee;
     if (numKids <= 2)
     kFee = 0.00 ;
     else
     kFee = (numKids * 250.00);
     //end kids calculation
     if (numYears >= 2)
     memFee =2500.00;
     else
     memFee= 3000.00 + kFee;
     return memFee;
//end family method