kargo_ucret.java

a program which is writen for cargo company. its writen in netbeans.

import java.applet.Applet;
import java.awt.*;
import java.text.DecimalFormat;

public class kargo_ucret extends Applet {

public TextField f1,f2,f3,f4;
public Label L1;
    public void init() {      
        f1=new TextField("",10);
        f2=new TextField("",10);
        f3=new TextField("",10);
        f4=new TextField("",10);
        L1=new Label("Bilgi",Label.CENTER);
        setLayout(new GridLayout(7,2,1,2));
      add(new Label("Uzunluk",Label.LEFT));
      add(f1);
      add(new Label("Genişlik",Label.LEFT));
      add(f2);
      add(new Label("Derinlik",Label.LEFT));
      add(f3);
      add(new Label("Ağırlık",Label.LEFT));
      add(f4);
      add(new Button("Hesapla"));
      add(L1);
     
    }

public boolean action(Event evt,Object arg) {
float uzunluk,agirlik;
try
{
if(evt.target instanceof Button){ 
uzunluk=Float.valueOf(f1.getText()).floatValue()+Float.valueOf(f2.getText()).floatValue()+Float.valueOf(f3.getText()).floatValue();
agirlik=Float.valueOf(f4.getText()).floatValue();
kararver(uzunluk,agirlik); 
}
}
catch(NumberFormatException nfe)
{
L1.setText("Yanlış giriş yaptınız."+nfe.getMessage());

}

return true;
}

void kararver(float x,float y) {
 
if(y<10 && x<100){
    DecimalFormat a = new DecimalFormat("0.00");
    String s = a.format(y*0.5);
    L1.setText("Ucreti   :"+s+"YTL");}
else if(y<100 && x<250){
    DecimalFormat a = new DecimalFormat("0.00");
    String s = a.format(y*0.75);
    L1.setText("Ucreti   :"+s+"YTL");}
else if(y>100 || x>250) L1.setText("Paket kargo ile gönderilmeyecek kadar büyük");
}
}