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

public class finals3 extends Applet implements ActionListener,ItemListener

{
    int a;
    
    Label iaLbl = new Label("Items Available:");    
    Checkbox friesBox = new Checkbox("Fries",false);
    Checkbox spagBox = new Checkbox("Spaghetti",false);
    Checkbox burgerBox = new Checkbox("Burger",false);
    Checkbox drinksBox = new Checkbox("Drinks",false);

    Label qtyLbl = new Label("Quantity");
    TextField qty1Txt = new TextField(10);
    TextField qty2Txt = new TextField(10);
    TextField qty3Txt = new TextField(10);
    TextField qty4Txt = new TextField(10);

    Label sizeLbl = new Label("Size");
    Choice fchoice = new Choice();
    Choice schoice = new Choice();
    Choice bchoice = new Choice();
    Choice dchoice = new Choice();

    Label tpLbl = new Label("Total Price:");
    TextField tp1Txt = new TextField(10);
    TextField tp2Txt = new TextField(10);
    TextField tp3Txt = new TextField(10);
    TextField tp4Txt = new TextField(10);
    
    Label tocLbl = new Label("Type of Customer:");
    CheckboxGroup optGroup = new CheckboxGroup();
    Checkbox member = new Checkbox("Member(10% Discount)",false,optGroup);
    Checkbox student = new Checkbox("Student(5% Discount)",false,optGroup);
    Checkbox senior = new Checkbox("Senior Citizen(20% Discount)",false,optGroup);
    Checkbox others = new Checkbox("Others",false,optGroup);

    Label tiLbl = new Label("Total Items:");
    TextField tiTxt = new TextField(10);

    Label taLbl = new Label("Total Amount:");
    TextField taTxt = new TextField(10);

    Label disLbl = new Label("Discount:");
    TextField disTxt = new TextField(10);

    Label atpLbl = new Label("Amount to Pay:");
    TextField atpTxt = new TextField(10);

    Label arLbl = new Label("Amount Received:");
    TextField arTxt = new TextField(10);

    Label changeLbl = new Label("Change:");    
    TextField changeTxt = new TextField(10);

    Button compButton = new Button("COMPUTE");

    Button resetButton = new Button("RESET");

    Button payButton = new Button("PAY");
      
    int ti,ta,qty1,qty2,qty3,qty4,tp1=0,tp2=0,tp3=0,tp4=0,f1=0,f2=0,spag=0,b1=0,b2=0,d1=
0,d2=0,d3=0;
    
    double dis=0,atp=0,change=0,ar=0;
    
    public void init()

    {
    setLayout(new GridLayout(8,7));
    
    add(iaLbl);
    add(friesBox);
    friesBox.addItemListener(this);
    add(spagBox);
    spagBox.addItemListener(this);
    add(burgerBox);
    burgerBox.addItemListener(this);
    add(drinksBox);
    drinksBox.addItemListener(this);

    add(qtyLbl);
    add(qty1Txt);    
    add(qty2Txt);
    add(qty3Txt);
    add(qty4Txt);

    add(sizeLbl);
    add(fchoice);
    fchoice.addItem("Regular P 30");
    fchoice.addItem("Large P 40");
    
    add(schoice);
    schoice.addItem("P 40");

    add(bchoice);
    bchoice.addItem("Regular P 30");
    bchoice.addItem("With Cheese P 35");
    
    add(dchoice);
    dchoice.addItem("Regular P 15");
    dchoice.addItem("Medium P 20");
    dchoice.addItem("Large P 25");

    add(tpLbl);
    add(tp1Txt);    
    add(tp2Txt);
    add(tp3Txt);
    add(tp4Txt);

    add(tocLbl);  
    add(member);
    member.addItemListener(this);
    add(student);
    student.addItemListener(this);
    add(senior);
    senior.addItemListener(this);
    add(others);
    others.addItemListener(this);

    add(tiLbl);
    add(tiTxt);

    add(taLbl);
    add(taTxt);

    add(disLbl);
    add(disTxt);

    add(atpLbl);
    add(atpTxt);
  
    add(arLbl);
    add(arTxt);

    add(changeLbl);
    add(changeTxt);

    add(compButton);
    compButton.addActionListener(this);
    add(resetButton);
    resetButton.addActionListener(this);    
    add(payButton);
    payButton.addActionListener(this);      

    }

    public void itemStateChanged(ItemEvent e)

    {
    
    if(member.getState())
    a=1;
    
    else if(student.getState())
    a=2;
    
    else if(senior.getState())
    a=3;

    else if(others.getState())
    a=4;
     }



     public void actionPerformed(ActionEvent e)

     {
    String arg;    
    
    arg=e.getActionCommand();    

    if(arg.equals("COMPUTE"))
    {
        
        
            if(friesBox.getState())
            {
                if(fchoice.getSelectedItem())
        qty1=Integer.parseInt(qty1Txt.getText());
            f1=30;
            tp1=qty1*f1;
                tp1Txt.setText("" +tp1);
        }
            
                else if(fchoice.getSelectedItem())
                {
                qty1=Integer.parseInt(qty1Txt.getText());
            f2=40;
            tp1=qty1*f2;
               tp1Txt.setText("" +tp1);
                }
        }
        
            if(spagBox.getState())
            {
        
        qty2=Integer.parseInt(qty2Txt.getText());
        spag=40;  
            tp2=qty2*spag;
        tp2Txt.setText("" +tp2);
            }
            
            else
            {  
            tp2=qty2*spag;
        tp2Txt.setText("" +tp2);
            }
          
            if(burgerBox.getState())
            {
                if(bchoice.select())
        {
        qty3=Integer.parseInt(qty3Txt.getText());
            breg=bchoice.getSelectedItem();
            b1=30;
        breg=b1;
                tp3=qty3*b1;
                tp3Txt.setText("" +tp3);
                }
            
            else if(bchoice.select())
                {
            qty3=Integer.parseInt(qty3Txt.getText());
            bchs=bchoice.getSelectedItem();
            b2=35;
        bchs=b2;
            tp3=qty3*b2;
                tp3Txt.setText("" +tp1);
                }
        }
        
            if(drinksBox.getState())
            {
                if(dchoice.select())
        {
        qty4=Integer.parseInt(qty4Txt.getText());
            dreg=dchoice.getSelectedItem();
            d1=15;
        dreg=d1;
                tp4=qty3*d1;
                tp4Txt.setText("" +tp4);  
                }
            
            else if(dchoice.select())
                {
                qty4=Integer.parseInt(qty4Txt.getText());
            dmed=dchoice.getSelectedItem();
            d2=20;
        dmed=d2;
                tp4=qty4*d2;
                tp4Txt.setText("" +tp4);
                }

            else if(dchoice.select())
                {
                qty4=Integer.parseInt(qty4Txt.getText());
            dlar=dchoice.getSelectedItem();
            d3=25;
        dlar=d3;
                tp4=qty4*d3;
                tp4Txt.setText("" +tp4);
                }
        }
        

        if(a==1)
        {
        ti=(qty1) + (qty2) + (qty3) + (qty4);
        tiTxt.setText(""+ti);
        

        ta=(tp1) + (tp2) + (tp3) + (tp4);
        taTxt.setText(""+ta);
    
        dis=ta * 0.1;
        disTxt.setText(""+dis);

        atp=ta-dis;
        atpTxt.setText(""+atp);
        }
        
    
        else if(a==2)
        {
        ti=(qty1) + (qty2) + (qty3) + (qty4);
        tiTxt.setText(""+ti);
        

        ta=(tp1) + (tp2) + (tp3) + (tp4);
        taTxt.setText(""+ta);
    
        dis=ta * 0.05;
        disTxt.setText(""+dis);

        atp=ta-dis;
        atpTxt.setText(""+atp);
        }

        else if(a==3)
        {
        ti=(qty1) + (qty2) + (qty3) + (qty4);
        tiTxt.setText(""+ti);
        

        ta=(tp1) + (tp2) + (tp3) + (tp4);
        taTxt.setText(""+ta);
    
        dis=ta * 0.2;
        disTxt.setText(""+dis);

        atp=ta-dis;
        atpTxt.setText(""+atp);
        }

    else if(a==4)
        {
        ti=(qty1) + (qty2) + (qty3) + (qty4);
        tiTxt.setText(""+ti);
        

        ta=(tp1) + (tp2) + (tp3) + (tp4);
        taTxt.setText(""+ta);
    
        disTxt.setText("" +dis);

        atp=ta-dis;
        atpTxt.setText(""+atp);
        }
        repaint();
    }
    
    else if(arg.equals("RESET"))    
    {
        friesBox.setState(false);
        spagBox.setState(false);
        burgerBox.setState(false);
        drinksBox.setState(false);
        qty1Txt.setText("");
        qty2Txt.setText("");
        qty3Txt.setText("");
        qty4Txt.setText("");
    fchoice.select(0);
    bchoice.select(0);
    dchoice.select(0);
        tp1Txt.setText("");
        tp2Txt.setText("");
        tp3Txt.setText("");
        tp4Txt.setText("");
           member.setState(false);
          student.setState(false);
           senior.setState(false);
    others.setState(false);
        tiTxt.setText("");
        taTxt.setText("");
        disTxt.setText("");
        atpTxt.setText("");
    arTxt.setText("");
    changeTxt.setText("");
        a=1;
        ti=0;
    ta=0;
        dis=0;
        qty1=0;
        qty2=0;
        qty3=0;
        qty4=0;
        tp1=0;
        tp2=0;
        tp3=0;
        tp4=0;
        repaint();
    }

    else if(arg.equals("PAY"))
    {
    ar=Integer.parseInt(arTxt.getText());
    change=ar-atp;
    changeTxt.setText("" +change);
    }
    repaint();
   }
}

<html>
<applet code="finals3.class" height=300 width=600>
</applet>
</html>

if(friesBox.getState())
            {//a1 start fries
                if(fchoice.getSelectedItem()) {//a1.1
        qty1=Integer.parseInt(qty1Txt.getText());
            f1=30;
            tp1=qty1*f1;
                tp1Txt.setText("" +tp1);
        }//a1.1
            
                else if(fchoice.getSelectedItem())
                {//a1.2
                qty1=Integer.parseInt(qty1Txt.getText());
            f2=40;
            tp1=qty1*f2;
               tp1Txt.setText("" +tp1);
                }//a1.2
        }//a1 end fries

if(friesBox.getState())
            {
            switch(frieschoice)
        {
        case 1:
        {
        qty1=Integer.parseInt(qty1Txt.getText());
        fchoice.getSelectedItem();
            f1=30;
            tp1=qty1*f1;
            tp1Txt.setText("" +tp1);
        break;
            }
            
            case 2:
            {
            qty1=Integer.parseInt(qty1Txt.getText());
        fchoice.getSelectedItem();
            f2=40;
            tp1=qty1*f2;
            tp1Txt.setText("" +tp1);
        break;
            }
        }
        }
        
            if(spagBox.getState())
            {
            qty2=Integer.parseInt(qty2Txt.getText());
        fchoice.getSelectedItem();
        s1=40;  
            tp2=qty2*s1;
            tp2Txt.setText("" +tp2);
            }
            
            else
            {
            tp2Txt.setText("0");
            }
          
            if(burgerBox.getState())
            {
        switch(burgerchoice)
        {
        case 1:
        {
            qty3=Integer.parseInt(qty3Txt.getText());
        bchoice.getSelectedItem();
            b1=30;
            tp3=qty3*b1;
            tp3Txt.setText("" +tp3);
        break;
            }
            
            case 2:
            {
            qty3=Integer.parseInt(qty3Txt.getText());
        bchoice.getSelectedItem();
            b2=35;
            tp3=qty3*b2;
            tp3Txt.setText("" +tp1);
        break;
            }
        }
        }
        
            if(drinksBox.getState())
            {
        switch(drinkschoice)
        {
        case 1:
        {
            qty4=Integer.parseInt(qty4Txt.getText());
        dchoice.getSelectedItem();
            d1=15;
            tp4=qty3*d1;
            tp4Txt.setText("" +tp4);
        break;
            }
            
            case 2:
            {
            qty4=Integer.parseInt(qty4Txt.getText());
        dchoice.getSelectedItem();
            d2=20;
            tp4=qty4*d2;
            tp4Txt.setText("" +tp4);
        break;
            }

            case 3:
            {
            qty4=Integer.parseInt(qty4Txt.getText());
        dchoice.getSelectedItem();
            d3=25;
            tp4=qty4*d3;
            tp4Txt.setText("" +tp4);
        break;
            }
        }
        }

import java.awt.*;
import java.applet.*;
import java.awt.event.*;
public class fin extends Applet implements ActionListener, ItemListener
{
Label items=new Label ("Items Available:");
Label quantity=new Label ("Quantity:");
Label size=new Label ("Size:");
Label totalprice=new Label ("Total Price:");
Checkbox fries=new Checkbox ("Fries",false);
TextField qfries=new TextField (5);
Choice sfries=new Choice();
TextField tfries=new TextField(5);
Checkbox spag=new Checkbox ("Spaghetti",false);
TextField qspag=new TextField(5);
Label space=new Label("      P 35      ");
TextField tspag=new TextField(5);
Checkbox burger=new Checkbox ("Burger",false);
TextField qburger=new TextField(5);
Choice sburger=new Choice();
TextField tburger=new TextField(5);
Checkbox drinks=new Checkbox ("Softdrinks",false);
TextField qdrinks=new TextField(5);
Choice sdrinks=new Choice();
TextField tdrinks=new TextField(5);
Label customer=new Label("Type of Customer:");
CheckboxGroup type=new CheckboxGroup();
Checkbox member1=new Checkbox("Member(10% discount)",false,type);
Checkbox member2=new Checkbox("Student(5% discount)",false,type);
Checkbox member3=new Checkbox("Senior Citizen(20% discount)",false,type);
Checkbox member4=new Checkbox("Others",true,type);
Button compute=new Button ("COMPUTE");
Button reset=new Button ("RESET");
Button pay=new Button ("PAY");
Label totalitems=new Label ("Total Items:");
TextField tfitems=new TextField(10);
Label tamt=new Label ("Total Amount:");
TextField tfamt=new TextField(10);
Label dc=new Label ("Discount:");
TextField tfdc=new TextField(10);
Label tpay=new Label ("Amount to Pay:");
TextField tfpay=new TextField(10);
Label trcvd=new Label ("Amount Received:");
TextField tfrcvd=new TextField(10);
Label tchange=new Label ("Change:");
TextField tfchange=new TextField(10);

public void init()
{
add(items);
add(quantity);
add(size);
add(totalprice);
add(fries);
fries.addItemListener(this);
add(qfries);
add(sfries);
sfries.addItem("Regular (P30)");
sfries.addItem("Large (P40)");
add(tfries);
add(spag);
spag.addItemListener(this);
add(qspag);
add(space);
add(tspag);
add(burger);
burger.addItemListener(this);
add(qburger);
add(sburger);
sburger.addItem("Regular (P25)");
sburger.addItem("w/ Cheese (P35)");
add(tburger);
add(drinks);
drinks.addItemListener(this);
add(qdrinks);
add(sdrinks);
sdrinks.addItem("Regular (P15)");
sdrinks.addItem("Medium (P20)");
sdrinks.addItem("Large (P25)");
add(tdrinks);
add(customer);
add(member1);
member1.addItemListener(this);
add(member2);
member2.addItemListener(this);
add(member3);
member3.addItemListener(this);
add(member4);
member4.addItemListener(this);
add(compute);
compute.addActionListener(this);
add(reset);
reset.addActionListener(this);
add(pay);
pay.addActionListener(this);
add(totalitems);
add(tfitems);
add(tamt);
add(tfamt);
add(dc);
add(tfdc);
add(tpay);
add(tfpay);
add(trcvd);
add(tfrcvd);
add(tchange);
add(tfchange);
}

public void itemStateChanged(ItemEvent ie)
{
}

public void actionPerformed(ActionEvent e)
{
String button,fr,bg,dr;
int qf,qb,qs,qd,tq;
double tf,tb,ts,tdrnk,total,dis,topay,pay1,chg;
button=e.getActionCommand();
qf=0;qb=0;qs=0;qd=0;dis=0;
tf=0;tb=0;ts=0;tdrnk=0;topay=0;pay1=0;

if (button=="COMPUTE")
{

  if(fries.getState())
  {
  fr=sfries.getSelectedItem();
  qf=Integer.parseInt(qfries.getText());
    if(fr.equals("Regular (P30)"))
    {
    tf=qf*30;
    }
    if(fr.equals("Large (P40)"))
    {
    tf=qf*40;
    }
  tfries.setText(""+tf);
  }
  else
  {
  tf=0;
  tfries.setText(""+tf);
  qfries.setText("0");
  }

  if(spag.getState())
  {
  qs=Integer.parseInt(qspag.getText());
  ts=qs*35;
  tspag.setText(""+ts);
  }
  else
  {
  ts=0;
  tspag.setText(""+ts);
  qspag.setText("0");
  }

  if(burger.getState())
  {
  bg=sburger.getSelectedItem();
  qb=Integer.parseInt(qburger.getText());
    if(bg.equals("Regular (25)"))
    {
    tb=qb*25;
    }
    if(bg.equals("w/ Cheese (P35)"))
    {
    tb=qb*35;
    }
  tburger.setText(""+tb);
  }
  else
  {
  tb=0;
  tburger.setText(""+tb);
  qburger.setText("0");
  }

  if(drinks.getState())
  {
  dr=sdrinks.getSelectedItem();
  qd=Integer.parseInt(qdrinks.getText());
    if(dr.equals("Regular (P15)"))
    {
    tdrnk=qd*15;
    }
    if(dr.equals("Medium (P20)"))
    {
    tdrnk=qd*20;
    }
    if(dr.equals("Large (P25)"))
    {
    tdrnk=qd*25;
    }
  tdrinks.setText(""+tdrnk);
  }
  else
  {
  tdrnk=0;
  tdrinks.setText(""+tdrnk);
  qdrinks.setText("0");
  }

tq=qd+qb+qs+qf;
total=tdrnk+tb+ts+tf;

if(member1.getState())
{
dis=(total/100)*10;
}
if(member2.getState())
{
dis=(total/100)*5;
}
if(member3.getState())
{
dis=(total/100)*20;
}
if(member4.getState())
{
dis=0;
}

topay=total-dis;

tfitems.setText(""+tq);
tfamt.setText(""+total);
tfdc.setText(""+dis);
tfpay.setText(""+topay);

}

if(button=="PAY")
{
pay1=Double.parseDouble(tfrcvd.getText());
topay=Double.parseDouble(tfpay.getText());
  chg=pay1-topay;
  if(chg>=0.00)
  {
  tfchange.setText(""+chg);
  }
  if(chg<0.00)
  {
  tfrcvd.setText("Insufficient Funds!");
  }
}

if(button=="RESET")
{
qfries.setText("");
qspag.setText("");
qdrinks.setText("");
qburger.setText("");
tfitems.setText("");
tfamt.setText("");
tfdc.setText("");
tfpay.setText("");
tfchange.setText("");
tfrcvd.setText("");
fries.setState(false);
burger.setState(false);
drinks.setState(false);
spag.setState(false);
member1.setState(false);
member2.setState(false);
member3.setState(false);
member4.setState(true);
tfries.setText("");
tspag.setText("");
tdrinks.setText("");
tburger.setText("");
sfries.select(0);
sburger.select(0);
sdrinks.select(0);
}
}
}