Creating a Set containing instances of another Class, which type?

Hi All,
I'm stuck trying to create a set which contains instances of another Class.
When I created my instance method, it takes an argument which is the instance of another Class.
It errors as I've used the Class as the type rather than String> or Integer.
Can someone point my in the right direction?
WebPageData wpd1 = new WebPageData("this is a sentence for a test", "www.test.com");
WebPageData wpd2 = new WebPageData("this sentence is shorter", "www.short.com");
WebPageData wpd3 = new WebPageData("this is very short", "www.very.com");
Finder f1 = new Finder();
f1.addsite(wpd1);
f1.addsite(wpd2);
f1.addsite(wpd3);
f1.searchFor("a sentence test");
Edited by: geedoubleu on Mar 16, 2008 9:03 AM

The error message is "Semantic error: line 5. Message addsite( WebPageData ) not understood by class'Finder'"
* Adds the argument of WebPageData instances to to a collection scannedSites.
public void addSite(WebPageData theWebPage)
this.scannedSites.add(theWebPage);
}

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Hi
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Regards,
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Message was edited by:
lalit_mangal
Message was edited by:
lalit_mangal

Try the following code
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I've made sure the buttons are smaller than the size of the panel, and the panel is smaller than the frame, so...
Message was edited by:
macman104

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infoPanel.setAlignmentX(JPanel.LEFT_ALIGNMENT);
row1 = new JPanel();
row1.add(profileName);
row1.add(profileName);
infoPanel.add(row1);
row2 = new JPanel();
row2.add(hostAddress);
row2.add(hostAddress);
infoPanel.add(row2);
row3 = new JPanel();
row3.add(account);
infoPanel.add(row3);
row4 = new JPanel();
row4.setLayout(new FlowLayout());
row4.add(portNo);
row4.add(Box.createHorizontalStrut(57));
row4.add(Anonymous);
row4.add(anonymous);
infoPanel.add(row4);
row5 = new JPanel();
row5.add(loginName);
infoPanel.add(row5);
row6 = new JPanel();
row6.add(passwd);
infoPanel.add(row6);
row7 = new JPanel();
row7.setLayout(new FlowLayout());
row7.add(downloadPath);
row7.add(browseButton);
infoPanel.add(row7);
arrangedComponents.add(labelPanel, "West");
arrangedComponents.add(infoPanel, "Center");
cp.add(arrangedComponents, "Center");
public void setButtonPanel() {
buttonPanel.setLayout(new FlowLayout());
buttonPanel.add(addButton);
buttonPanel.add(connectButton);
buttonPanel.add(cancelButton);
buttonPanel.add(clearButton);
cp.add(buttonPanel, "South");
public void setActionListeners() {
anonymous.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
     if(anonymous.isSelected()) {
     loginName.setText("anonymous");
     passwd.setText("your email here");
     else {
     loginName.setText("");
     passwd.setText("");
addButton.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
     if(profileName.getText() != "" && !data.contains(profileName.getText())){
     data.add(profileName.getText());
     profileList.setListData(data);
connectButton.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
     connectButtonPressed();
cancelButton.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
     JButton b = (JButton) e.getSource();
     ConnectDialog c = (ConnectDialog) b.getTopLevelAncestor();
     c.dispose();
clearButton.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
     profileName.setText("");
     hostAddress.setText("");
     account.setText("");
     portNo.setText("");
     loginName.setText("");
     passwd.setText("");
     downloadPath.setText("");
browseButton.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
     JFrame browseFrame = new JFrame("browse for folder");
     browseFrame.setBounds(230,230,200,200);
     JDirectoryChooser fileChooser = new JDirectoryChooser();
     fileChooser.setFileSelectionMode(JDirectoryChooser.DIRECTORIES_ONLY);
     int option = fileChooser.showDialog(browseFrame);
     if(option==JFileChooser.APPROVE_OPTION) {
     File f = fileChooser.getSelectedFile();
     defaultDownloadPath = f.getAbsolutePath();
     downloadPath.setText(defaultDownloadPath);
public void connectButtonPressed() {
if(!profileName.getText().equals("") && !hostAddress.getText().equals("") &&
!loginName.getText().equals("") && !passwd.getText().equals("")) {
currProfile.setProfileName(profileName.getText());
currProfile.setHostAddress(hostAddress.getText());
currProfile.setAcct(account.getText());
currProfile.setUserName(loginName.getText());
currProfile.setPassword(passwd.getText());
currProfile.setDownloadPath(downloadPath.getText());
parent.setProfile(currProfile);
this.dispose();
else {
JFrame f = new JFrame("Error!");
JOptionPane.showMessageDialog(f, "Some fields empty!", "", JOptionPane.ERROR_MESSAGE);
}

If the dialog is modal then you can just call show and wait for it to close by the user, then grab the info:
ConnectDialog dialog = new ConnectDialog();
dialog .show();
Profile profile = con.getProfile();
makeNewConnection( profile );

Using an int from one class in another class

I am a student writing a java program on renewable energy. Simply I have a power output which is a variable called PowerOutPut. declared as (public int PowerOutPut) I have another class which is a graphics class where I display the variable PowerOutPut on a graph, but i dont know how to call this variable in my graphics class.
if anyone can help, I would be very grateful.
Chris

But bear in mind that it is good practice to declare your variables private (unless you need otherwise) and to provide get and set methods to access and change them.
private int myVariable = 0;
public int getMyVariable(){
return myVariable;
public void setMyVariable(int newValue){
myVariable = newValue;
}Also, class names should start with upper case and variables should start with lower case.
Good luck.

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I am creating an SQL project in XCODE. I have one view. My main view controller is loading the database to a table/array. I want to add another class (with no NIB) just to handle the display of the table in a UITableView. So, I added a skeleton cocoa touch class file to my classes folder to handle this function when parameters change.
So, in my app delegate, the "applicationdidFinishLaunchingWithOptions" method loads my mainViewController and NIB. On the "viewDidLoad" method in my mainViewController, I read a URL into an SQLite database and close the database. Herein lies the problem: I want to call my new class (TableViewHandler) and pass it the array created in the mainViewController and use the array to populate the UITable.
How do I call a class from within another class (which has no NIB) to populate the table? Especially if my TableViewHandler has no "viewDidLoad", "viewDidAppear", etc.
Regads,
-Kevin

This is what my exact problem.
i've created a bean (DataBean) to access the database. i'm having a servlet program (ShopBook). now to check some details over there in the database from the servlet i'm in need to use a method in the DataBean.
both ShopBook.java and DataBean.java lies in the package shoppack.
in ShopBook i tried to instantiate the object to DataBean as
DataBean db = new DataBean();
it shows the compiler error, unable to resolve symbol DataBean.
note:
first i compiled DataBean.java, it got compiled perfectly and the class file resides inside the shoppack.
when i'm trying to compile the ShopBook its telling this error.
hope i'm clear in explaining my problem. can u please help me?
thank u in advance.
regards,
Fazli

Can't add list element when calling a method from another class

I am trying to call a method in another class, which contains code listmodel.addElement("text"); to add an element into a list component made in that class.
I've put in System.out.println("passed"); in the method just to make sure if the method was being called properly and it displays normally.
I can change variables in the other class by calling the method with no problem. The only thing I can't do is get listmodel.addElement("text"); to add a new element in the list component by doing it this way.
I've called that method within it's class and it added the element with no problem. Does Java have limitations about what kind of code it can run from other classes? And if that's the case I'd really like to know just why.

There were no errors, just the element doesnt get added to the list by doing it this way
class showpanel extends JPanel implements ActionListener, MouseMotionListener {
       framepanel fp = new framepanel();
       --omitted--
     public void actionPerformed(ActionEvent e){
              if(e.getSource() == button1){
                   fp.addLayer();
/*is in a different class file*/
class framepanel extends JPanel implements ActionListener{
        --omitted--
     public void addLayer(){
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          numLayer++;
}

Creating a Set containing instances of another Class, which type?

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