I am able to expose a private JTextField by doing this:
public void setTextField(String value) {
someTF.setText(value);
}
It would be a lot of work if I have a lot of JTextFields. I tried doing this but failed. No error it's just not setting the right value on specified JTextField.
public class SomeView {
private JTextField someTF = new JTextField(10);
...
public void initComponents() {
...
}
public void setTextField(JTextField jTF, String value) {
jTF.setText(value);
}
}
public class SomeViewTable implements ...{
public void mousePressed(MouseEvent e) {
if (e.getSource() == someButton) {
JTextField someTF = new JTextField(10);
String value = "Some Value";
SomeView sv = new SomeView();
sv.initComponents();
sv.setTextField(someTF, value);
}
}
}
Im expecting this to happen in SomeView class when I called method sameTextField
someTF.setText("Some Value");
Is this possible, what rules in java am I breaking here?
In your listener, you are creating a local variable:
JTextField someTF = new JTextField(10);
...
sv.setTextField(someTF, value);
But what you want is to set the text field of SomeView. So remove the first line, and replace the second with:
sv.setTextField(sv.someTF, value);
Now, to answer the more global question of how to expose many private JTextFields through one method, one possibility could be to assign a string ID to each of them, and store them all in a HashMap:
Map<String,JTextField> map = new HashMap<String,JTextField>();
map.put("field 1", textField1);
...
map.put("field n", textFieldn);
public void setTextField(String id, String value) {
map.get(id).setText(value);
}
Or you could simply generate getters automatically for all your fields (most IDE do that painlessly)...
Related
I am building an app that will be submitting the details of your siblings to the database.
MY idea is since i dont know number of your children, i just have a floating button that am using to call a class that adds a contaner with some textFields to be filled.
so I have like a Form here....
private Button btnSubmit;
private Container cnt_box;
public class ChildrenForm extends Form
{
private List<Child> listofchildren;
public ChildrenForm()
{
super("CHILDREN DETAILS",BoxLayout.y());
FloatingActionButton fab=FloatingActionButton.createFAB(FontImage.MATERIAL_ADD);
fab.bindFabToContainer(this);
fab.addActionListener((e) -> addNewChild());
getToolbar().addMaterialCommandToRightBar("", FontImage.MATERIAL_CLEAR_ALL, (e) ->
clearAll());
btnSubmit=new Button("Submit");
cnt_box = new Container(new BoxLayout(BoxLayout.Y_AXIS));
cnt_box.add(btnSubmit);
add(cnt_box);
}
//....here i have some other methods...
}
i have a method to enable the editing here....
public void edit()
{
txtname.startEditingAsync();
txtname3.startEditingAsync();
txtbirth.startEditingAsync();
txtdbirth.startEditingAsync();
}
the floatingAction Button calls this method here....
public void addNewChild()
{
Childdetails td=new Childdetails("","","","",false);
add(td);
revalidate();
td.edit();
}
that method now called this class which i want to take the details showing this container.....
public class Childdetails extends Container
{
private TextField txtname;
private TextField txtname3;
private TextField txtbirth;
private TextField txtdbirth;
private CheckBox done=new CheckBox();
private Container cnt_child;
public Childdetails(String name,String name3,String birthcertno,String dateofbirth ,boolean checked)
{
super(new BorderLayout());
cnt_child=new Container();
cnt_child.addComponent(new Label("First Name"));
txtname = new TextField(name);
txtname.setHint("First Name");
cnt_child.addComponent(txtname);
cnt_child.addComponent(new Label("Surname"));
txtname3 = new TextField(name3);
txtname3.setHint("Surname");
cnt_child.addComponent(txtname3);
cnt_child.addComponent(new Label("Birth Certificate/Notification No"));
txtbirth = new TextField(birthcertno);
txtbirth.setHint("Birth Certificate No:");
cnt_child.addComponent(txtbirth);
cnt_child.addComponent(new Label("Date of Birth"));
txtdbirth = new TextField(dateofbirth);
txtdbirth.setHint("dd/MM/yyyy");
cnt_child.addComponent(txtdbirth);
add(CENTER,cnt_child);
add(LEFT,done);
done.setSelected(checked);
}
public void edit()
{
txtname.startEditingAsync();
txtname3.startEditingAsync();
txtbirth.startEditingAsync();
txtdbirth.startEditingAsync();
}
public boolean isChecked(){
return done.isSelected();
}
public String getText(){
return txtname.getText();
}
}
this is the method which am using to delate any selected container....but i understand its because of that save method......
private void clearAll()
{
int cc=getContentPane().getComponentCount();
for(int i=cc-1; i>=0; i--)
{
Childdetails t=(Childdetails)getContentPane().getComponentAt(i);
if(t.isChecked())
{
t.remove();
}
}
save();
getContentPane().animateLayout(300);
}
the save method....which after following some tutorial i believe its saving the taken data.... here
private void save()
{
listofchildren = new ArrayList<>();
Childdetails detail=new Childdetails("","","","",false);
Child child=new Child()
.name.set(detail.getText())
.name3.set(detail.getText())
.birthcertno.set(detail.getText())
.dateofbirth.set(detail.getText())
.checked.set(detail.isChecked());
listofchildren.add(child);
PropertyIndex.storeJSONList("child.json", listofchildren);
}
i also have a class i constructed following certain tutorial to save the data.....here
public class Child implements PropertyBusinessObject
{
public final Property<String,Child> name=new Property<>("firstname","");
public final Property<String,Child> name3=new Property<>("Surname","");
public final Property<String,Child> birthcertno=new Property<>("BirthCertNo","");
public final Property<String,Child> dateofbirth=new Property<>("dateofbirth","");
public final BooleanProperty<Child> checked=new BooleanProperty<>("checked", false);
private final PropertyIndex idx=new PropertyIndex(this,"Todo", name, name3, birthcertno, dateofbirth, checked);
#Override
public PropertyIndex getPropertyIndex(){
return idx;
}
now my main main problem... i just want when that submit button is pressed, to send the filled details..... i tried this,,,
btnSubmit.addActionListener(new ActionListener()
{
#Override
public void actionPerformed(ActionEvent evt)
{
Log.p("Button pressed", 1);
save();
Log.p("data saved...", 1);
if(existsInStorage("child.json"))
{
Log.p("loading data ...", 1);
listofchildren=new Child().getPropertyIndex().loadJSONList("child.json");
String NationalID=Storage.getInstance().readObject("NationalID").toString();
String UserName=Storage.getInstance().readObject("UserName").toString();
Hashtable hash=new Hashtable();
hash.put("ChildDet", listofchildren);
hash.put("ReadIdCopy", NationalID);
hash.put("UserName",UserName);
final Result res=Result.fromContent(hash);
final String checkthis=res.toString();
//--------check url......
String myUrl="http://localhost:50111/AddChildren";
String Reply="";
requestclass c=new requestclass();
try {
Reply=c.checking(checkthis,myUrl);
} catch (IOException ex) {
// Logger.getLogger(AddChildren.class.getName()).log(Level.SEVERE, null, ex);
} catch (requestclass.JSONException ex) {
// Logger.getLogger(AddChildren.class.getName()).log(Level.SEVERE, null, ex);
}
if(Reply.equals("SuccesfullyRecieved"))
{
Dialog.show("SuccesfullyRecieved", "Details Succesfuly Recieved", "OK", null);
/*----redirect---*/
nextofkin nkin=new nextofkin();
nkin.nxtofkscreen();
}
else if(Reply.equals("sorry"))
{
Dialog.show("SORRY!!!", "Seems their is a problem updating Next of kin details... try again", "OK", null);
}
else
{
Dialog.show("Error", "Something went wrong, try checking your connection and try again later.", "OK", null);
}
}
else
{
ToastBar.showErrorMessage("Sorry, no data to submit....");
}
}
});
i dont know how to do it,,,, also my save method has some errors...please help me out, thanks in advance
This is caused by this line:
Childdetails t=(Childdetails)getContentPane().getComponentAt(i);
What you are doing here is looping over all the components in the content pane and downcasting them to Childdetails.
This is bad. You don't check instanceof which would be helpful. You might have other problems but this line:
add(cnt_box);
Specifically adds a non Childdetails component to the content pane (doing add without a context on a Form implicitly adds to the content pane).
Also about startEditingAsync. This is wrong.
This isn't the way to make them visible.
Notice your code adds a lot of components before the form is shown and uses animateLayout on these instances. This is probably why things aren't visible since you do that on a Form that isn't shown yet (from the constructor) and so the animation "runs" without any effect. The components are probably in the wrong area.
I suggest removing that whole block of startEditingAsync and also try:
if(getContentPane().isInitialized()) {
getContentPane().animateLayout(300);
}
I am trying to pass a simple string from a purchase class by throwing it in a getter, then trying to retrieve it from another class called pconfirm. Then trying to set the text of a label in that form to the amount being passed.
Purchase.java
private JLabel lblamnt;
public String amount() {
String gtext = lblamnt.getText();
return gtext;
}
Pconfirm.java
private JLabel lblgamnt;
public Pconfirm() {
Purchase purchase = new Purchase();
lblgamnt.setText("Test" + purchase.amount());
}
When i pass it it shows nothing.
I was under the presumption that you call it by Purchase.amount().
You need to have an actual object to use the method amount()
In your Purchase class constructor hopefully you give access to the JLabel or the ability to set the text like so
Purchase.java
public void setTextOfJLabel(String text)
{
lblamnt.setText(text);
}
Then you could do the following in
Pconfirm.java
private JLabel lblgamnt;
private Purchase purchObjName;
public Pconfirm() {
purchObjName = new Purchase();
purchObjName.setTextOfJLabel("The Purchase JLabel text");
lblgamnt.setText("Pconfirm JLabel text and " + purchObjName.amount());
}
Unless you explicitly set the text before calling amount your text of the JLabel will be null. You could also do something where every Purchase JLabel text is the same until changed by the user using the method I provided and you can set a default text like this
Purchase.java
private final String defaultJLabelText = "Purchase Default Text";
public Purchase()
{
lblamnt = new JLabel();
lblamnt.setText(defaultJLabelText);
}
I have a jTextField and I want to check whether or not its values are empty.
So far, I can do it this way:
public static JTextField checkEmpty(JTextField jTextField) {
if (jTextField.getText().equals(" ") || jTextField.getText().isEmpty()) {
return null;
} else {
return jTextField;
}
}
However, I want to do it in the manner seen below:
JTextField jTextField = new JTextField();
jTextField.checkEmpty();
This would work by returning a jTextField if it is not empty, and throw an exception or show showMessageDialog otherwise.
I'm not sure if this is possible, so any help would be appreciated.
With all that said, the actual idea is I want to create a validation class for a swing component in my project. If I can make this work then I can put it in my validation class.
Thank you.
You need to implement your own class that extend the JTextField class and add method you want.
First: you should extend JTextField like:
class MyJTextField extends JTextField
{
public MyJTextField( String defVal, int size )
{
super( defVal, size );
}
public MyJTextField()
{
super( "", size );
}
}
Second: you should add your checkEmpty() method, and you don't need the JTextField argument:
public MyJTextField checkEmpty() {
if (this.getText().equals("") ||
this.getText().isEmpty())
{
// throw your exception.
// print message or whatever you need
return null;
} else {
return this;
}
}
Then: you can use it like this:
MyJTextField jTextField = new MyJTextField();
jTextField.checkEmpty();
I am use MVC design pattern. In file FmCompress.zul, I have:
<combobox id="cboFmCompress" model="${$composer.listTypeOfProcess}" mold="rounded" hflex="1">
<attribute name="onCreate">self.setSelectedIndex(1);</attribute>
<template name="model">
<comboitem label="${each.typeOfCompress}" value="${each.typeOfCompressId}"></comboitem>
</template>
</combobox>
Model for combo box: TypeOfCompressDTO.java
public class TypeOfCompressDTO {
private String typeOfCompressId;
private String typeOfCompress;
public TypeOfCompressDTO() {
}
public TypeOfCompressDTO(String typeOfCompressId, String typeOfCompress) {
this.typeOfCompressId = typeOfCompressId;
this.typeOfCompress = typeOfCompress;
}
public String getTypeOfCompressId() {
return typeOfCompressId;
}
public void setTypeOfCompressId(String typeOfCompressId) {
this.typeOfCompressId = typeOfCompressId;
}
public String getTypeOfCompress() {
return typeOfCompress;
}
public void setTypeOfCompress(String typeOfCompress) {
this.typeOfCompress = typeOfCompress;
}
}
In file controller: FmCompressComposer.java , I try something like this (my idea):
public class FmCompressComposer extends BaseCustomComposer<FmCompressService, FmCompressDTO> {
//....
#Wire
private Combobox cboToggleZipUnzip;
//....
// initialize value for combo box.
public ListModel<TypeOfCompressDTO> getListTypeOfProcess() {
lstTypeOfCompress = new ArrayList<TypeOfCompressDTO>();
TypeOfCompressDTO t1 = new TypeOfCompressDTO("1", "Zip file");
TypeOfCompressDTO t2 = new TypeOfCompressDTO("2", "Unzip file");
lstTypeOfCompress.add(t1);
lstTypeOfCompress.add(t2);
listTypeOfProcess = new ListModelList(lstTypeOfCompress, true);
return listTypeOfProcess;
}
// Listen even select item in combo box.
public void onSelect$cboZipUnzip(){
searchDTO = new FmCompressDTO();
searchDTO.setType("1");
// my problem focus at this method, and at this line, get value what user choosen. searchDTO.setType(cboToggleZipUnzip.getSelectedItem().getValue().toString());
List<FmCompressDTO> listDTO = fmCompressService.search(searchDTO);
if (listDTO != null && !listDTO.isEmpty()) {
ListModelList model = new ListModelList(listDTO);
model.setMultiple(true);
gridDataFmCompress.setModel(model);
refreshGridData(null);
}
}
//...
}
Please help me: In combo box, when user has event selecting, call method. (In method, get value what user choosen from combobox).
I assume your BaseCustomComposer is extending a GenericForwardComposer.
If so, you are strictly bound to the naming conventions.
As your id of the combobox is cboFmCompress your wired variable should be
// no need for #Wire
private Combobox cboFmCompress;
and the event listener method should be
public void onSelect$cboFmCompress(Event event) {}
Here you can find a minimized zkfiddle: http://zkfiddle.org/sample/3hnhc92/2-SO-33120026
I am designing a basic telephone directory for a project. It has three classes, Main (for the GUI), TelephoneDirectory (an object to store TelephoneRecords objects) and a TelephoneRecords class (where information for each record object is stored).
The requirements state: Extend your application by adding a list displaying the complete current contents of the telephone directory, ordered alphabetically by name. You will need to implement a ListModel. You may want to study class AbstractListModel before starting on your own implementation.
Only problem is, I have absolutely no idea how to extend my application to achieve this. I have searched online all night and haven't found a way to do this. I have tried storing the objects in an AbstractListModel rather than a HashMap but get errors. I don't exactly know what or why it is used and how I could use it. The next requirement (by the way) is to have the JList auto-update with new data when it's entered so I guess it has something to do with that?
Either way, if anyone could help it'd be great. My current working code for the previous that needs to be edited version is:
MAIN
public class Main extends JFrame implements ActionListener {
private static TelephoneDirectory directory = new TelephoneDirectory();
private JTextField nameField;
private JTextField numberField;
private JList contactList;
public Main() {
setTitle("Telephone Directory");
setLayout(new GridLayout(0,2));
JLabel nameLabel = new JLabel("Name of Contact:");
nameField = new JTextField(20);
add(nameLabel);
add(nameField);
JLabel numberLabel = new JLabel("Number of Contact:");
numberField = new JTextField(20);
add(numberLabel);
add(numberField);
JButton enterButton = new JButton("Enter");
JButton cancelButton = new JButton("Cancel");
enterButton.addActionListener(this);
cancelButton.addActionListener(this);
add(enterButton);
add(cancelButton);
JLabel contactsLabel = new JLabel("Current Contacts:");
contactList = new JList();
add(contactsLabel);
add(contactList);
setVisible(true);
pack();
}
public static void main(String[] args) {
new Main();
}
#Override
public void actionPerformed(ActionEvent arg0) {
JButton jb = (JButton) arg0.getSource();
if (jb.getText().equals("Cancel")) {
System.exit(0);
} else {
directory.addRecord(nameField.getText(), new TelephoneRecords(nameField.getText(), numberField.getText()));
System.out.println("Added record for " + nameField.getText() + ": number is " + numberField.getText() + ".");
}
}
}
TELEPHONEDIRECTORY
public class TelephoneDirectory implements Iterable<TelephoneRecords> {
private HashMap records;
public TelephoneDirectory() {
records = new HashMap<String, TelephoneRecords>();
}
public void addRecord(String name, TelephoneRecords newRecord) {
records.put(name, newRecord);
}
public TelephoneRecords getRecord(String name) {
return (TelephoneRecords) records.get(name);
}
public void getDirectory() {
System.out.println("Telephone Directory:");
records.values().iterator();
}
#Override
public Iterator<TelephoneRecords> iterator() {
return records.values().iterator();
}
}
TELEPHONERECORDS
public class TelephoneRecords {
private String name;
private String number;
public TelephoneRecords(String name, String number) {
this.name = name;
this.number = number;
}
public String getName() {
return name;
}
public String getNumber() {
return number;
}
#Override
public String toString() {
return "The phone number of " + name + " is " + number + ".";
}
}
You may be trying to do too much with inheritance. Rather than using an AbstractListModel in place of your HashMap, consider creating a class that extends AbstractListModel and that holds the TelephoneDirectory class with its HashMap as the nucleus of the AbstractListModel's data. This is called extending a class by composition rather than by inheritance.
Edit: Also consider using a TreeMap rather than a HashMap so as to be able to retrieve your names and telephone records in name order. You'll also need to give your TelephoneDirectory class a getElementAt(int index) and a getSize() method to allow it to be used within the AbstractListModel class.