JButtons stopped performing actions

[Strife1817]

Hey guys...

Sorry to bother you with this, however, I am stumped. The project that I built - builds clean, and executes, however only one out of three buttons in working. Could someone take a look and see what is going on, because if I keep going around in circles, I am liable to delete the whole project and start again. (Deleted the old version last night when I couldn't figure it out.) It was 2 am, and I was exhausted.....

Thanks in advance.

Ian

import java.awt.Border Layout;
import java.awt.Dimens ion;
import java.awt.GridBa gConstraints;
import java.awt.GridBa gLayout;
//import java.awt.GridLa yout;
import java.awt.Insets ;
import java.awt.event. ActionEvent;
import java.awt.event. ActionListener;
import java.text.Decim alFormat;

import javax.swing.JBu tton;
import javax.swing.JFr ame;
import javax.swing.JLa bel;
import javax.swing.JOp tionPane;
import javax.swing.JPa nel;
import javax.swing.JSc rollPane;
import javax.swing.JTe xtArea;
import javax.swing.JTe xtField;


public class FuelCalc {
JFrame displayPane = new JFrame("Trip Report");
JLabel olabel = new JLabel("Odomete r Reading");
JTextField otext = new JTextField();
JLabel glabel = new JLabel("Gallons Filled");
JTextField gtext = new JTextField();
JLabel clabel = new JLabel("Cost for fill up");
JTextField ctext = new JTextField();
JButton quit = new JButton("Quit") ;
JButton enter = new JButton("Enter" );
JButton report = new JButton("Run Report");
JTextArea text = new JTextArea();

Double[][] FuelArray;
int fai = 0; /*declare variable to use within array to keep track of
current and prior entries*/


public FuelCalc(){

// backend
FuelArray = new Double[3][7];

// GUI
otext.setColumn s(10);
gtext.setColumn s(10);
ctext.setColumn s(10);
quit.addActionL istener(new quit());
enter.addAction Listener(new EnterListener() );
report.addActio nListener(new runreport());

BorderLayout border1 = new BorderLayout();
border1.setHgap (20);
border1.setVgap (20);
displayPane.get ContentPane().s etLayout(border 1);

JPanel panelA = new JPanel();
panelA.setLayou t(new GridBagLayout() );
GridBagConstrai nts gc1 = new GridBagConstrai nts();
gc1.insets = new Insets(10, 10, 10, 10);
gc1.gridx = 0;
gc1.gridy = 0;
panelA.add(olab el, gc1);
gc1.gridx = 1;
gc1.gridy = 0;
panelA.add(otex t, gc1);
gc1.gridx = 0;
gc1.gridy = 1;
panelA.add(glab el, gc1);
gc1.gridx = 1;
gc1.gridy = 1;
panelA.add(gtex t, gc1);
gc1.gridx = 0;
gc1.gridy = 2;
panelA.add(clab el, gc1);
gc1.gridx = 1;
gc1.gridy = 2;
panelA.add(ctex t, gc1);

JScrollPane scrollPane = new JScrollPane(tex t);
scrollPane.setV erticalScrollBa rPolicy(JScroll Pane.VERTICAL_S CROLLBAR_ALWAYS );
scrollPane.setP referredSize(ne w Dimension(500, 200));

JPanel center = new JPanel();
BorderLayout bl2 = new BorderLayout();
bl2.setHgap(20) ;
bl2.setVgap(20) ;
center.setLayou t(bl2);
center.add(pane lA, BorderLayout.WE ST);
center.add(scro llPane, BorderLayout.SO UTH);
displayPane.get ContentPane().a dd(center, BorderLayout.CE NTER);

JPanel right = new JPanel();
right.setLayout (new GridBagLayout() );
GridBagConstrai nts c = new GridBagConstrai nts();
c.gridy = 0;
c.insets = new Insets(10, 10, 10, 10);
right.add(enter , c);
c.gridy = 1;
right.add(repor t, c);
c.gridy = 2;
right.add(quit, c);
displayPane.get ContentPane().a dd(right, BorderLayout.EA ST);
}
public static void main(String[] args) {

FuelCalc gui = new FuelCalc();
gui.showcalc();

}

public void showcalc(){
displayPane.set DefaultCloseOpe ration(JFrame.E XIT_ON_CLOSE);
displayPane.pac k();
displayPane.set Visible(true);
}

public class quit implements ActionListener{
public void actionPerformed (ActionEvent a){
System.exit(0);
}
}



public class EnterListener implements ActionListener{
public void actionPerformed (ActionEvent e){
for(int i = 0; i<=fai-1; i++){
double mileage = FuelArray[i][0];
double gallons = 0;
double cost = 0;
double mileagetotal = FuelArray[fai - 1][3];
double fueltotal = FuelArray[fai - 1][4];
double costtotal = FuelArray[fai - 1][5];
double mpgavg = FuelArray[fai -1][6];

try {
mileage = Double.parseDou ble(otext.getTe xt());
} catch (NumberFormatEx ception e1) {
JOptionPane.sho wMessageDialog( null, "Please try again", "Invalid Input",JOptionP ane.ERROR_MESSA GE);
}

try {
gallons = Double.parseDou ble(gtext.getTe xt());
} catch (NumberFormatEx ception e1) {
JOptionPane.sho wMessageDialog( null, "Please try again", "Invalid Input",JOptionP ane.ERROR_MESSA GE);
}

try {
cost = Double.parseDou ble(ctext.getTe xt());
} catch (NumberFormatEx ception e1) {
JOptionPane.sho wMessageDialog( null, "Please try again", "Invalid Input",JOptionP ane.ERROR_MESSA GE);
}

if(mileage<=(Fu elArray[fai-1][0])){
JOptionPane.sho wMessageDialog( null, "The entered odometer reading must greater than the previous odometer reading",
"Invalid Input",JOptionP ane.ERROR_MESSA GE);
}
if(mileage <= 0){
JOptionPane.sho wMessageDialog( null, "The entered odometer reading must greater than zero",
"Invalid Input",JOptionP ane.ERROR_MESSA GE);
}
else{
// proceed

if(gallons<=0){
JOptionPane.sho wMessageDialog( null, "The wage must greater than 0",
"Invalid Input",JOptionP ane.ERROR_MESSA GE);
}
else{

// Write parsed values from textfields to array
FuelArray[fai][0] = mileage;
FuelArray[fai][1] = gallons;
FuelArray[fai][2] = cost;
//Update totals for mileage, fuel and cost
FuelArray[fai][3] = mileagetotal = mileage - FuelArray[fai-1][0];
FuelArray[fai][4] = fueltotal = gallons + FuelArray[fai-1][4];
FuelArray[fai][5] = costtotal = cost + FuelArray[fai-1][4];
FuelArray[fai][6] = mpgavg = FuelArray[fai][3] / FuelArray[fai][4];
fai++; // Advance row count in array to write next row on "EnterListe ner"

otext.setText(" ");
gtext.setText(" ");
ctext.setText(" ");
}
}
}
}
}
public class runreport implements ActionListener{
public void actionPerformed (ActionEvent b){
text.setText("" ); // clear previous report
String newline = "\n";

// for each entry...
for(int i = 0; i<=fai-1; i++){
double mileage = FuelArray[i][0];
double gallons = FuelArray[i][1];
double cost = FuelArray[i][2];
double mileagetotal = FuelArray[i][3];
double fueltotal = FuelArray[fai][4];
double costtotal = FuelArray[fai][5];
double mpgavg = FuelArray[fai][6];
double lowmpg = 25;
double highmpg = 35;

text.append("Od ometer= " + mileage + " Gallons= " + gallons + " Cost= $" + cost + newline);


DecimalFormat df = new DecimalFormat(" ######.##");

text.append(new line + newline + newline + "************** ************" + newline);
text.append("Tr ip Statistics");
text.append("To tal miles traveled= " + df.format(milea getotal) + newline);
text.append("Av erage Miles Per Gallon= " + df.format(mpgav g) + newline + newline);
text.append("To tal spent on gas: $" + df.format(costt otal) + newline);

if(mpgavg<lowmp g)
text.append("Yo ur miles per gallon is below average");
else if(mpgavg>lowmp g && mpgavg < highmpg)
text.append("Yo ur miles per gallon is average");
else if(highmpg >= mpgavg)
text.append("Yo ur miles per gallon is above average");
}
}
}
}