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Android (Java): Show Progress-bar while Loading table view data [duplicate]

This question already has answers here:
The application may be doing too much work on its main thread
(21 answers)
Closed 1 year ago.
I have a block of code to load a table view. But for large data, my app is crashing. I want to fix that and also want to show a progress bar while loading the table view data. I tried with the AsyncTask but it is showing Skipped 98 frames! The application may be doing too much work on its main thread.
My onCreate code (Updated): -
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_sheet);
myDb = new DBHelper(this);
loadIntentInputs();
setToolbar();
new MyWorker(this).execute();
}
My AsyncTask code (Updated): -
public class MyWorker extends AsyncTask < String , Context , Void > {
private Context context ;
private ProgressDialog progressDialog;
public MyWorker (Context context) {
this.context = context ;
progressDialog = new ProgressDialog ( context ) ;
progressDialog.setCancelable ( false ) ;
progressDialog.setMessage ( "Retrieving data..." ) ;
progressDialog.setTitle ( "Please wait" ) ;
progressDialog.setIndeterminate ( true ) ;
}
# Override
protected void onPreExecute ( ) {
progressDialog.show () ;
}
# Override
protected Void doInBackground ( String ... params ) {
runOnUiThread(new Runnable() {
#Override
public void run() {
showAttendanceTable();
}
});
return null ;
}
# Override
protected void onPostExecute ( Void result ) {
if(progressDialog != null && progressDialog.isShowing()){
progressDialog.dismiss ( ) ;
}
}
}
showAttendanceTable method code (Updated): -
private void showAttendanceTable() {
TableLayout tableLayout = findViewById(R.id.table_layout);
int day_in_month = getDayInMonth(month_year);
int row_size = sid_array.length+1;
TableRow[] rows = new TableRow[row_size];
TextView[] rolls_tv = new TextView[row_size];
TextView[] names_tv = new TextView[row_size];
TextView[][] status_tv = new TextView[row_size][day_in_month+1];
for (int i = 0; i < row_size; i++) {
rolls_tv[i] = new TextView(this);
names_tv[i] = new TextView(this);
for (int j = 1; j <= day_in_month; j++) {
status_tv[i][j] = new TextView(this);
}
}
// for excel file
HSSFSheet hssfSheet = null;
try {
hssfSheet = hssfWorkbook.createSheet(month_year);
} catch (IllegalArgumentException e){
e.printStackTrace();
}
HSSFRow hssfRow;
// setting 1st row
rolls_tv[0].setText("Roll");
names_tv[0].setText("Name");
// setting excel file
hssfRow = hssfSheet.createRow(0);
hssfRow.createCell(0).setCellValue("Roll");
hssfRow.createCell(1).setCellValue("Name");
rolls_tv[0].setTextSize(1,22);
names_tv[0].setTextSize(1,22);
rolls_tv[0].setTypeface(rolls_tv[0].getTypeface(), Typeface.BOLD);
names_tv[0].setTypeface(names_tv[0].getTypeface(), Typeface.BOLD);
rolls_tv[0].setTextAlignment(View.TEXT_ALIGNMENT_CENTER);
names_tv[0].setTextAlignment(View.TEXT_ALIGNMENT_CENTER);
rolls_tv[0].setTextColor(Color.parseColor("#FF000000"));
names_tv[0].setTextColor(Color.parseColor("#FF000000"));
for (int i = 1; i <=day_in_month ; i++) {
String date = String.valueOf(i);
if(i<10) date = "0"+date;
status_tv[0][i].setText(date);
// setting excel file
hssfRow.createCell(i+1).setCellValue(date);
status_tv[0][i].setTextSize(1,22);
status_tv[0][i].setTypeface(status_tv[0][i].getTypeface(), Typeface.BOLD);
status_tv[0][i].setTextAlignment(View.TEXT_ALIGNMENT_CENTER);
status_tv[0][i].setTextColor(Color.parseColor("#FF000000"));
}
// setting rows after 1st row
for (int i = 1; i < row_size ; i++) {
rolls_tv[i].setText(roll_array[i-1]);
names_tv[i].setText(name_array[i-1]);
// setting excel file
hssfRow = hssfSheet.createRow(i);
hssfRow.createCell(0).setCellValue(roll_array[i-1]);
hssfRow.createCell(1).setCellValue(name_array[i-1]);
rolls_tv[i].setTextSize(1,20);
names_tv[i].setTextSize(1,20);
rolls_tv[i].setTextAlignment(View.TEXT_ALIGNMENT_CENTER);
names_tv[i].setTextAlignment(View.TEXT_ALIGNMENT_CENTER);
rolls_tv[i].setTextColor(Color.parseColor("#FF000000"));
names_tv[i].setTextColor(Color.parseColor("#FF000000"));
int count=0;
for (int j = 1; j <=day_in_month ; j++) {
String day = String.valueOf(j);
String month = month_year.substring(0,3);
String year = month_year.substring(4,8);
String status = myDb.getStatus(sid_array[i-1],day+" "+month+" "+year);
if (status!=null && status.equals("A")) {
status_tv[i][j].setText(status);
status_tv[i][j].setBackgroundColor(Color.parseColor("#EF9A9A"));
// setting excel file
hssfRow.createCell(j+1).setCellValue(status);
} else if (status!=null && status.equals("P")) {
status_tv[i][j].setText(String.valueOf(++count));
status_tv[i][j].setBackgroundColor(Color.parseColor("#A5D6A7"));
// setting excel file
hssfRow.createCell(j+1).setCellValue(String.valueOf(count));
}
status_tv[i][j].setTextSize(1,20);
status_tv[i][j].setTextAlignment(View.TEXT_ALIGNMENT_CENTER);
status_tv[i][j].setTextColor(Color.parseColor("#FF000000"));
}
}
for (int i = 0; i < row_size; i++) {
rows[i] = new TableRow(this);
rolls_tv[i].setPadding(20,12,20,12);
names_tv[i].setPadding(20,12,20,12);
if (i==0) {
rows[i].setBackgroundColor(Color.parseColor("#FFD400"));
} else if(i%2==0) {
rows[i].setBackgroundColor(Color.parseColor("#EEEEEE"));
} else {
rows[i].setBackgroundColor(Color.parseColor("#E4E4E4"));
}
rows[i].addView(rolls_tv[i]);
rows[i].addView(names_tv[i]);
for (int j = 1; j <=day_in_month ; j++) {
status_tv[i][j].setPadding(20,12,20,12);
rows[i].addView(status_tv[i][j]);
}
tableLayout.addView(rows[i]);
}
tableLayout.setShowDividers(TableLayout.SHOW_DIVIDER_MIDDLE);
}

The problem is you are running new thread on your doInBackground method and you have placed your showAttendanceTable() code inside runOnUiThread() which is causing too many work to consume main thread.Just copy paste the below code, replace it with your doInBackground() method and everything will work fine.
protected Void doInBackground ( String ... params ) {
showAttendanceTable();
}
return null ;
}
Copy this much part of your code from showAttendanceTable() to onPreExecute() method:
TableLayout tableLayout = findViewById(R.id.table_layout);
int day_in_month = getDayInMonth(month_year);
int row_size = sid_array.length+1;
TableRow[] rows = new TableRow[row_size];
TextView[] rolls_tv = new TextView[row_size];
TextView[] names_tv = new TextView[row_size];
TextView[][] status_tv = new TextView[row_size][day_in_month+1];
for (int i = 0; i < row_size; i++) {
rolls_tv[i] = new TextView(this);
names_tv[i] = new TextView(this);
for (int j = 1; j <= day_in_month; j++) {
status_tv[i][j] = new TextView(this);
}
}

Populate Tablelayout programatically through String Array

Hello fellow stackoverflowers,
i just wrote this code to populate a tablelayout inside my activity_customer layout. For some reason in runs through without throwing the slightest error, but at the end of "populateView" the application just stops/crashes.
I tried some many things I found via google/stackoverflow, but none seems to work. I hope someone can help me find why the app stops.
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_customer);
populateView(DataClass.getReturnData());
}
private void populateView(String[] Array){
int len = Array.length;
TableLayout tab = (TableLayout) findViewById(R.id.table);
if (len != 0){
for (int i = 0; i <= len - 1; i++) {
TableRow row = new TableRow(this);
TextView tvName = new TextView(this);
tvName.setText("" + Array[i]);
System.out.println(Array[i]);
tab.addView(row);
}
}
}
Thanks in advance,
Soulrox

Here is a complete example:
public class MainActivity extends Activity
{
#Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
String[] row = { "ROW1", "ROW2", "Row3", "Row4", "Row 5", "Row 6",
"Row 7"
};
String[] column = { "COLUMN1", "COLUMN2", "COLUMN3", "COLUMN4",
"COLUMN5", "COLUMN6"
};
int rl=row.length;
int cl=column.length;
ScrollView sv = new ScrollView(this);
TableLayout tableLayout = createTableLayout(row, column,rl, cl);
HorizontalScrollView hsv = new HorizontalScrollView(this);
hsv.addView(tableLayout);
sv.addView(hsv);
setContentView(sv);
}
private TableLayout createTableLayout(String [] rv, String [] cv,int rowCount, int columnCount)
{
// 1) Create a tableLayout and its params
TableLayout.LayoutParams tableLayoutParams = new TableLayout.LayoutParams();
TableLayout tableLayout = new TableLayout(this);
tableLayout.setBackgroundColor(Color.BLACK);
// 2) create tableRow params
TableRow.LayoutParams tableRowParams = new TableRow.LayoutParams();
tableRowParams.setMargins(1, 1, 1, 1);
tableRowParams.weight = 1;
for (int i = 0; i < rowCount; i++)
{
// 3) create tableRow
TableRow tableRow = new TableRow(this);
tableRow.setBackgroundColor(Color.BLACK);
for (int j= 0; j < columnCount; j++)
{
// 4) create textView
TextView textView = new TextView(this);
// textView.setText(String.valueOf(j));
textView.setBackgroundColor(Color.WHITE);
textView.setGravity(Gravity.CENTER);
String s1 = Integer.toString(i);
String s2 = Integer.toString(j);
String s3 = s1 + s2;
int id = Integer.parseInt(s3);
Log.d("TAG", "-___>"+id);
if (i ==0 && j==0)
{
textView.setText("0==0");
}
else if(i==0)
{
Log.d("TAAG", "set Column Headers");
textView.setText(cv[j-1]);
}
else if( j==0)
{
Log.d("TAAG", "Set Row Headers");
textView.setText(rv[i-1]);
}
else
{
textView.setText(""+id);
// check id=23
if(id==23)
{
textView.setText("ID=23");
}
}
// 5) add textView to tableRow
tableRow.addView(textView, tableRowParams);
}
// 6) add tableRow to tableLayout
tableLayout.addView(tableRow, tableLayoutParams);
}
return tableLayout;
}
}
Output:

getting text from dynamically created edittext into a button android java

I have created dynamically edittext on my android application like below:
protected void onCreate(Bundle savedInstanceState) {
RelativeLayout layout = (RelativeLayout) findViewById(R.id.linearLayout1);
final EditText[] Et = new EditText[10];
int prevTextViewId = 0;
int add = 0;
int add1 = 0;
for (int a = 0; a < Arr.length; a++) {
Et[a] = new EditText(this);
RelativeLayout.LayoutParams param = new RelativeLayout.LayoutParams(
(int) LayoutParams.WRAP_CONTENT,
(int) LayoutParams.WRAP_CONTENT);
param.leftMargin = 25;
param.topMargin = (a + 1) * (100 + add1);
Et[a].setPadding(5, 23, 5, 5);
Et[a].setLayoutParams(param);
Et[a].setSingleLine(false);
Et[a].setHorizontalScrollBarEnabled(false);
Et[a].setWidth(280);
Et[a].getText().toString();
layout.addView(Et[a]);
add = add + 25;
add1 = add1 + 15;
}
}
And I want to get text from dynamically created edittext into a button like below:
btn_doneAnswer = (Button) findViewById(R.id.btn_doneAnswer);
btn_doneAnswer.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
for (int a = 0; a < Arr.length; a++) {
Et[a] = new EditText(this);
String text += Et[a].getText().toString();
}
Bundle bundle = new Bundle();
Intent i_backToAddItem = new Intent(
AnswerActivityMultiText.this,
QuestionActivityDynamic.class);
bundle.putString("text", text);
bundle.putString("MultiQues", MultiQues);
i_backToAddItem.putExtras(bundle);
startActivity(i_backToAddItem);
}
});
But I am getting error below in the button onclick method at this line Et[a] = new EditText(this);:
The constructor EditText(new View.OnClickListener(){}) is undefined
another below error at this line += in the button onclick method:
Syntax error on token "+=", = expected
Kindly suggest me how I am getting text from dynamically created edittext into a button.
Waiting for reply.
Thanks

you dont have to initialize the EditText again in the onClick. You should directly use the EditText object to get the text. So the line
Et[a] = new EditText(this);
is not required at all!
And for the error with '+=' operator, you are declaring the string and using the operator(+=) in one line. you have to split up the the declaration part out of the for loop and then use '+='. Here's the complete code :
btn_doneAnswer = (Button) findViewById(R.id.btn_doneAnswer);
btn_doneAnswer.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
String text;
for (int a = 0; a < Arr.length; a++) {
text += Et[a].getText().toString();
}
Bundle bundle = new Bundle();
Intent i_backToAddItem = new Intent(
AnswerActivityMultiText.this,
QuestionActivityDynamic.class);
bundle.putString("text", text);
bundle.putString("MultiQues", MultiQues);
i_backToAddItem.putExtras(bundle);
startActivity(i_backToAddItem);
}
});

Your problem is in this lines:
for (int a = 0; a < Arr.length; a++) {
Et[a] = new EditText(this);
String text += Et[a].getText().toString();
}
In this line:
Et[a] = new EditText(this);
this is the onClickListener object, you must have class.this (where class is the class name of file that this code is created).
In this other line:
String text += Et[a].getText().toString();
You always create a new String, and instead of created, you make an add. It is a Java concept fail.
You must do this:
String text = "";
for (int a = 0; a < Arr.length; a++) {
Et[a] = new EditText(class_name.this);
text += Et[a].getText().toString();
}

insert i variable from for loop in filename using java/ javafx

How am I able to insert the i from the for loop in the imageview below, not the i to replace 12 in the file name so that it can become;
ImageView Moon_img12 = new ImageView(new Image(getClass().getResourceAsStream("/Images/tiles/i.png")));
Code:
for(int i=0; i<=total_donnation; i++)
{
ImageView Moon_img12 = new ImageView(new Image(getClass().getResourceAsStream("/Images/tiles/12.png")));
}

Try
ImageView[] moon_images = //init array
//loop
ImageView Moon_img = new ImageView(new Image(getClass().getResourceAsStream("/Images/tiles/"+i+".png
moon_images[i]= Moon_img;

Thanks you all, i have solved it now using your help.
GridPane grid = new GridPane();
int max_columns = 5;
int current_row = 0;
int current_column = 0;
int total_donnation = 7;
for(int i=1; i<=total_donnation; i++)
{
ImageView Moon_img = new ImageView(new Image(getClass().getResourceAsStream("/Images/tiles/"+i+".png")));
grid.add(Moon_img, current_column,current_row);
current_column = current_column+1;
if (current_column == max_columns )
{
current_row = current_row+1;
current_column = 0;
}
}
return grid;

Checkbox Compilation Error

I am to stimulate a java applet of a menu with checkboxes and checkboxgroups, with calories listed next to each food choice. My problem is I cannot figure out why I keep getting this error message when i compile it:
AnAppletWithCheckboxes.java:188: illegal forward reference
int crepeVal = Integer.parseInt(textField.getText());
I get that for every line that I have is converting the textField into an int, so hence there are 17 errors. Any idea of why will be appreciated!
Here is my Code:: it is very long because there are plenty checkboxes and textFields. I commented Out My place of Error! :
import java.applet.*;
import java.awt.*;
import java.awt.event.*;
public class AnAppletWithCheckboxes extends Applet implements ItemListener {
public void init() {
setLayout(new GridLayout(1, 0));
CheckboxGroup dinnerType = new CheckboxGroup();
standard = new Checkbox("standard", dinnerType, false);
standard.addItemListener(this);
deluxe = new Checkbox("deluxe", dinnerType, true);
deluxe.addItemListener(this);
CheckboxGroup appetizers = new CheckboxGroup();
crepe = new Checkbox("crepe", appetizers, false);
crepe.addItemListener(this);
quiche = new Checkbox("quiche", appetizers, false);
quiche.addItemListener(this);
dumpling = new Checkbox("dumpling", appetizers, false);
dumpling.addItemListener(this);
textField = new TextField("300");
textField.setEditable(false);
textField2 = new TextField("330");
textField2.setEditable(false);
textField3 = new TextField("98");
textField3.setEditable(false);
CheckboxGroup soupOrSalad = new CheckboxGroup();
soup = new Checkbox("Soup", soupOrSalad, false);
soup.addItemListener(this);
CheckboxGroup soups = new CheckboxGroup();
cream = new Checkbox("cream", soups, false);
cream.addItemListener(this);
broth = new Checkbox("broth", soups, false);
broth.addItemListener(this);
gumbo = new Checkbox("gumbo", soups, false);
gumbo.addItemListener(this);
textField4 = new TextField("190");
textField4.setEditable(false);
textField5 = new TextField("20");
textField5.setEditable(false);
textField6 = new TextField("110");
textField6.setEditable(false);
salad = new Checkbox("Salad", soupOrSalad, false);
salad.addItemListener(this);
CheckboxGroup salads = new CheckboxGroup();
tossed = new Checkbox("tossed", salads, false);
tossed.addItemListener(this);
caesar = new Checkbox("caesar", salads, false);
caesar.addItemListener(this);
croutons = new Checkbox("croutons");
croutons.addItemListener(this);
lite = new Checkbox("lite dressing");
lite.addItemListener(this);
textField7 = new TextField("35");
textField7.setEditable(false);
textField8 = new TextField("90");
textField8.setEditable(false);
textField9 = new TextField("60");
textField9.setEditable(false);
textField10 = new TextField("50");
textField10.setEditable(false);
CheckboxGroup entrees = new CheckboxGroup();
chicken = new Checkbox("chicken", entrees, false);
chicken.addItemListener(this);
beef = new Checkbox("beef", entrees, false);
beef.addItemListener(this);
lamb = new Checkbox("lamb", entrees, false);
lamb.addItemListener(this);
fish = new Checkbox("fish", entrees, false);
fish.addItemListener(this);
textField11 = new TextField("200");
textField11.setEditable(false);
textField12 = new TextField("170");
textField12.setEditable(false);
textField13 = new TextField("65");
textField13.setEditable(false);
textField14 = new TextField("150");
textField14.setEditable(false);
CheckboxGroup deserts = new CheckboxGroup();
pie = new Checkbox("pie", deserts, false);
pie.addItemListener(this);
fruit = new Checkbox("fruit", deserts, false);
fruit.addItemListener(this);
sherbet = new Checkbox("sherbet", deserts, false);
sherbet.addItemListener(this);
textField15 = new TextField("80");
textField15.setEditable(false);
textField16 = new TextField("60");
textField16.setEditable(false);
textField17 = new TextField("107");
textField17.setEditable(false);
calories = new Button("Calories");
calTextField = new TextField("0"+total);
calTextField.setEditable(false);
setLayout(new GridLayout(0, 1));
Panel p = new Panel();
add(p);
p.add(standard);
p.add(deluxe);
appetizerPanel = new Panel();
add(appetizerPanel);
label = new Label("Appetizer");
appetizerPanel.add(label);
appetizerPanel.add(crepe);
appetizerPanel.add(textField);
appetizerPanel.add(quiche);
appetizerPanel.add(textField2);
appetizerPanel.add(dumpling);
appetizerPanel.add(textField3);
soupPanel = new Panel();
add(soupPanel);
soupPanel.add(soup);
soupPanel.add(cream);
soupPanel.add(textField4);
soupPanel.add(broth);
soupPanel.add(textField5);
soupPanel.add(gumbo);
soupPanel.add(textField6);
saladPanel = new Panel();
add(saladPanel);
saladPanel.add(salad);
saladPanel.add(tossed);
saladPanel.add(textField7);
saladPanel.add(caesar);
saladPanel.add(textField8);
saladPanel.add(croutons);
saladPanel.add(textField9);
saladPanel.add(lite);
saladPanel.add(textField10);
entreePanel = new Panel();
add(entreePanel);
label2 = new Label("Entree");
entreePanel.add(label2);
entreePanel.add(chicken);
entreePanel.add(textField11);
entreePanel.add(beef);
entreePanel.add(textField12);
entreePanel.add(lamb);
entreePanel.add(textField13);
entreePanel.add(fish);
entreePanel.add(textField14);
desertPanel = new Panel();
add(desertPanel);
label3 = new Label("Desert");
desertPanel.add(label3);
desertPanel.add(pie);
desertPanel.add(textField15);
desertPanel.add(fruit);
desertPanel.add(textField16);
desertPanel.add(sherbet);
desertPanel.add(textField17);
caloriesPanel = new Panel();
add(caloriesPanel);
caloriesPanel.add(calories);
caloriesPanel.add(calTextField);
}
public void LabelChange(Label b) {
if (b ==label3)
b.setForeground(Color.lightGray);
else
label3.setForeground(Color.black);
}
/* This is where i get those errors!! */
int crepeVal = Integer.parseInt(textField.getText());
int quicheVal = Integer.parseInt(textField2.getText());
int dumplingVal = Integer.parseInt(textField3.getText());
int creamVal = Integer.parseInt(textField4.getText());
int brothVal = Integer.parseInt(textField5.getText());
int gumboVal = Integer.parseInt(textField6.getText());
int tossedVal = Integer.parseInt(textField7.getText());
int caesarVal = Integer.parseInt(textField8.getText());
int croutonsVal = Integer.parseInt(textField9.getText());
int liteVal = Integer.parseInt(textField10.getText());
int chickenVal = Integer.parseInt(textField11.getText());
int beefVal = Integer.parseInt(textField12.getText());
int lambVal = Integer.parseInt(textField13.getText());
int fishVal = Integer.parseInt(textField14.getText());
int pieVal = Integer.parseInt(textField15.getText());
int fruitVal = Integer.parseInt(textField16.getText());
int sherbetVal = Integer.parseInt(textField17.getText());
public boolean action(Event evt, Object whatAction){
if(!(evt.target instanceof Button)){
return false;
}
else {
calorieCount();
return true;
}
}
public void calorieCount () {
if (crepe.getState())
crepeVal += total;
else
crepeVal = 0;
if (quiche.getState())
quicheVal += total;
else
quicheVal = 0;
if (dumpling.getState())
dumplingVal += total;
else
dumplingVal= 0;
if (cream.getState())
creamVal += total;
else
creamVal = 0;
if (broth.getState())
brothVal += total;
else
brothVal = 0;
if (gumbo.getState())
gumboVal += total;
else
gumboVal = 0;
if (tossed.getState())
tossedVal += total;
else
tossedVal = 0;
if (caesar.getState())
caesarVal += total;
else
caesarVal = 0;
if (croutons.getState())
croutonsVal += total;
else
croutonsVal = 0;
if (lite.getState())
liteVal += total;
else
liteVal = 0;
if (chicken.getState())
chickenVal += total;
else
chickenVal = 0;
if (beef.getState())
beefVal += total;
else
beefVal = 0;
if (lamb.getState())
lambVal += total;
else
lambVal = 0;
if (fish.getState())
fishVal += total;
else
fishVal = 0;
if (pie.getState())
pieVal += total;
else
pieVal = 0;
if (fruit.getState())
fruitVal += total;
else
fruitVal = 0;
if (sherbet.getState())
sherbetVal += total;
else
sherbetVal = 0;
}
public void itemStateChanged(ItemEvent e) {
if (e.getSource() == standard || e.getSource() == deluxe)
handleDinnerType((Checkbox)e.getSource());
else if (e.getSource() == soup || e.getSource() == salad)
handleSoupSaladChoice((Checkbox)e.getSource());
}
void handleDinnerType(Checkbox selectedType) {
boolean enabled;
if (selectedType == standard){
enabled = false;
LabelChange(label3);
}
else{
enabled = true;
LabelChange(label);
}
soup.setEnabled(enabled);
salad.setEnabled(enabled);
pie.setEnabled(enabled);
fruit.setEnabled(enabled);
sherbet.setEnabled(enabled);
cream.setEnabled(enabled);
broth.setEnabled(enabled);
gumbo.setEnabled(enabled);
tossed.setEnabled(enabled);
caesar.setEnabled(enabled);
croutons.setEnabled(enabled);
lite.setEnabled(enabled);
}
void handleSoupSaladChoice(Checkbox selectedCourse) {
boolean soupEnabled, saladEnabled;
if (selectedCourse == soup) {
soupEnabled = true;
saladEnabled = false;
soup.setForeground(Color.BLACK);
salad.setForeground(Color.lightGray);
}
else {
soupEnabled = false;
saladEnabled = true;
soup.setForeground(Color.lightGray);
salad.setForeground(Color.BLACK);
}
cream.setEnabled(soupEnabled);
broth.setEnabled(soupEnabled);
gumbo.setEnabled(soupEnabled);
tossed.setEnabled(saladEnabled);
caesar.setEnabled(saladEnabled);
croutons.setEnabled(saladEnabled);
lite.setEnabled(saladEnabled);
}
Label
label, label2, label3;
Panel
appetizerPanel, soupPanel, saladPanel, entreePanel, desertPanel, caloriesPanel;
Checkbox
standard, deluxe,
soup, salad,
crepe, quiche, dumpling,
cream, broth, gumbo,
tossed, caesar,
croutons, lite,
chicken, beef, lamb, fish,
pie, fruit, sherbet;
Button calories;
int total = 0;
TextField
textField, textField2, textField3,
textField4, textField5, textField6,
textField7, textField8, textField9,
textField10, textField11, textField12,
textField13, textField14, textField15,
textField16, textField17, calTextField;
}

In Java, you are not allowed to refer to a field a in an initializer of another field b if b is declared before a in the source code. That is, this is allowed:
int b = 3;
int a = b;
but this is not allowed:
int a = b;
int b = 3;
By the way, if Java had some magic way of figuring out that textField had to be initialized before crepeVal, you would still get a NullPointerException since textField is null after object construction.