Help needed to implement both Action and TextListener

Question

This my code. How can i use ActionListener for the conv button and yet retrive the values from my textFields like TextListener. You may adjust the code so I can relly learn whats the trick. Try to add the difference in between the spaces so I can see the difference Thank you!!
import java.awt.*;
import java.applet.*;
import java.awt.event.*;
public class project extends Applet implements ActionListener {
TextField TT,UNIT,unit,PVmax,PVmin,max,min,Table;
Button conv;
String UNIT1 = null;
String unit1 = null;
double PVmax1 = 0;
double PVmin1 = 0;
double max1 = 0;
double min1 = 0;
double PV1 = 0;
public void init() {
     TT=new TextField();
     UNIT=new TextField();
     unit=new TextField();
     PVmax=new TextField();
     PVmin=new TextField();
     max=new TextField();
     min=new TextField();
     Table= new TextField();
          Panel p = new Panel();
p.setLayout(new GridLayout(9,2,5,5));
p.add( new Label("Enter transmitter type"));
p.add( new Label());
p.add( new Label("(e.g. Pressure,Level,Flow etc.) :"));
p.add(TT);
p.add( new Label("Enter PV unit:"));
p.add(UNIT);
p.add( new Label("Enter Max. Sensing PV value:"));
p.add(PVmax);
p.add( new Label("Enter Min. Sensing PV value:"));
p.add(PVmin);
p.add( new Label("Enter transmitter Output Unit:"));
p.add(unit);
p.add( new Label("Enter transmitter max. Output:"));
p.add(max);
p.add( new Label("Enter transmitter min. Output:"));
p.add(min);
p.add( new Label("Enter table length :"));
p.add(Table);
add(p);
conv = new Button ("Start Conversion");
add(conv);
conv.addActionListener(this);
public void actionPerformed (ActionEvent event) {
PV1 = PVmax1-PVmin1;
repaint();
public void paint (Graphics g) {
PV1 = PVmax1-PVmin1;
g.drawString(" Pressure Transmitter Conversion Table " ,10,320);
g.drawString(" Transmitter Input (" + UNIT1 + ")" ,10,350);
g.drawString(" Transmitter Output (" + unit1 + ")" ,200,350);
g.drawString("PV value " + PV1 , 1,360);

Answer 1

public void actionPerformed (ActionEvent event) {
    Unit1=Char.parseChar(unit.getText());
    max1=Integer.parseInt(max.getText());
    PV1 = PVmax1-PVmin1;
}not sure whether it will work u must try.....