Java. What to do with Choice()???

Question

import java.awt.*;

import java.awt.event.*;

import java.applet.*;

public class ChoiceSample extends Applet
    implements ActionListener, ItemListener {

    Choice dz2;
    public void init(){
        dz2 = new Choice();
        dz2.addItem("female");
        dz2.addItem("male");
        dz2.addItemListener(this);
        add(dz2);


public void itemStateChanged(ItemEvent e) {

    String result = dz2.getSelectedItem();
    repaint();
        if(result.equals(getParameter("male"))){ 
            dz1 = 0.5;
        }
        else{
            dz1 = 0.7;
       }
   }
}

/* this is yust a fragment from my program but this is the only thing that I can`t make right. I need when I chose male -> dz1 = 0.5, but when I chose female dz1 = 0.7 Can someone help me, please? */