Moving around in a j scroll pane.

I have a JTextArea inside a JScrollPane and I'm trying to get the scroll pane to goto a certain line number that I want by using:
TA.setCaretPosition(10*linenumber);the linenumber is the line number the user enters and then the 10 is just the pixel it will go down because the interval I counted between each line is about 10. But it doesn't seem to move at all, what am I doing wrong?

I guess it doesn't work like that.
What you are doing is moving the caret to a certain position in the document. The setCaretPosition method expects the CHARACTER position in the document to which to move, and has nothing to do with pixels...
But this won't be moving the scroll pane at all. I think what you are looking for is the TA.scrollRectToVisible(Rectangle) method. You pass a Rectangle on the textarea that you want to be made visible, and the call is repassed to the parents until a JViewPort is found, which is then scrolled.
To calculate this rectangle you could use TA.getRows() and TA.getSize().height, for example, to determine how much space each row is really occupying.
Best regards,
Marcos.

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When a Node(group fro example) is added into a scroll pane, the scroll pane automatically align the node to the upper left corner of the scroll pane's content area. How can i customize the Node's alignment(the middle center eg) in the scroll pane. When the Node's size is scaled and larger than the scroll pane's size the scroll pane's scroll bar appears, and if the Node's size shrinks and it's size becomes smaller than the scroll pane's then the Node is aligned to the middle center. it seems don't take affect if i override the scroll pane's layoutChildren method and set layoutX and layoutY property of the Node.
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thanks

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import javafx.event.*;
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Hello all. I am trying to get a scroll pane to work in an application that I have built for school. I am trying to get an amortization table to scroll through for a mortgage calculator. It isn't recognizing my scrollpane and I am not sure why. Could someone give me a push in the right direction.
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import java.awt.event.*;
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                              double C = M - H;//monthly payment minus monthly interest
                              double Q = P - C;//new balance
                              P = Q;//sets loop
                              month++;
                              String showAmort = twoPlaces.format(H + C + Q);
                            amortScroll(showAmort);
          public static void main(String[] args) {
          MortCalcWeek3 app = new MortCalcWeek3();
}//end main
}//end the programI appreciate any help you may provide.

     JLabel amortBox = new JLabel("Amortiaztion Table");
     JScrollPane amortScroll = new JScrollPane(amortBox);The argument passed to a JScrollPane constructor specifies what's inside the scroll pane. Here, it seems like you're trying to create a scroll pane that displays a JLabel.
Also, I'm not sure what you're trying to do here:
amortScroll(showAmort);I don't see a method named "amortScroll".
You need to make a JTextArea, pass that into the JScrollPane's constructor, and add the JScrollPane to your frame.

How to deal with moving around like in gta2?

Hi there,
I'm programming an game but i was wondering how to deal with moving around like in gta2.
my game is also top-down with you(tha player) constantly in the middle of the screen. I know how to deal with button press etc.. but how to calculate how manny pixels the map has to move in the x and y axis...
It's difficult to explain for me.. but hope the picture is clear..
greetings

I was afraid for this one already.. the picture is not clear:) thanx for your response so far.. I will try again.. with the game gta2 in mind:)
see this screenie: http://www.vollversion.de/bilder/705_1_full.jpg
My game looks the same as gta2 top down... with the character in the middle of the screen(the one firing the flame thwower )(the player). if i press up he walks towards the police car.. if i press left or right.. he only turns around(an combination of pressing up and left is also posible) thus the character walks in the direction he's facing.
Now i would like to know how did they do this? how to programm such a movement? Because the character is standing constnatly in the middle of the screen the map has to move like in almost every game... how to calculate the x and y axis movement of the map?
Please.. try agian.. hopefully the screenie will help.

Dynamic content in scroll pane component

As far as I can see, the contentPath for a scroll pane
component can only point to a movie clip in the library, not to an
instance on stage. Does this mean that the content can only be
something created during authoring with no possibility of modifying
it in Actionscript?

No, I had no reply and eventually wrote my own scroll pane
solution which allows me to directly modify the pane's content with
ActionScript and update the scroll bar to reflect any change in the
content's size. I'm puzzled by the help file's example in
ScrollPane.refreshPane() because it describes a senario where:
"for example, you've loaded a form into a scroll pane and an
input property (for example, a text field) has been changed by
ActionScript. In this case, you would call refreshPane() to reload
the same form with the new values for the input properties."
Which implies that you can use ActionScript to change the
content then reload it. The help file on ScrollPane.contentPath is
not very clear about what content can be used but appears to say
that the only content types allowed are: a SWF or JPEG loaded via
its URL or a symbol in the current library. I don't see how you
could use ActionScript to change any of these. I've tried
specifying an on-stage instance as the content but that
fails.

Specifying text font in a scroll pane

Below is a fragment of code that attempts to display text in a scroll pane. Basically this works OK, except for the following:
1. Changing the font doesn't seem to make any difference. I tried "Arial", as shown, and "Curier", the display looks identical in both cases.
2. Multiple blank spaces are replaced by a single blank space. So that "Baa baa" is displayed as "Baa baa".
I would like to be able to display messages with many lines of text in a scroll pane preserving the format if possible, which relies on the blank spaces. I hope you can suggest how to do this better.
Thans for you help.
Miguel
    JLabel label = new JLabel(text);
    Font font = new Font("Arial",Font.PLAIN,12);
    label.setFont(font);
    JScrollPane scrollPane = new JScrollPane(label);

try using a textArea instead of a label and include tabs for your multiple spaces.
import java.awt.Font;
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
public class FontTest extends JFrame {
     public FontTest() {
          super("Font Testing");
          String text = "This is \t a \t test";
          JTextArea text3 = new JTextArea();
          text3.setText(text);
          Font font = new Font("Courier",Font.PLAIN,12);
          text3.setFont(font);
          JScrollPane scrollPane = new JScrollPane(text3);
          getContentPane().add(scrollPane);
          setSize(400, 200);
          setVisible(true);
     public static void main(String[] args) {
          FontTest app = new FontTest();
}

Moving around in a j scroll pane.

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