#how do i make a scrollbar here?

45 messages · Page 1 of 1 (latest)

glossy light
rustic lynxBOT
#

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valid birch
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using a JScrollPane encapsulate the panel that displays your information.
JScrollPane scrollablePanel = new JScrollPane(panel);

glossy light
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im a beginner with java , first time making a JFrame program

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i tried _ALWAYS, instead of _AS_NEEDED, but still doesnt show up.

valid birch
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you are adding the JScrollPane to the panel not the JTextArea correct ?

glossy light
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i have this.add(scroll); if u mean that

valid birch
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what is this

glossy light
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its the frame

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i mean where every object is

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the frame right?

valid birch
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depends on the context of this if your class extends JPanel this refers to the JPanel not the frame and I don't know your context

glossy light
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i mean i have a textarea , and i read a file into it but its longer than the textarea

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and i want it to make scrollable if that makes sense to u

valid birch
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I know. I just would like to see some code to actually help you.

glossy light
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public class Program extends JFrame implements ActionListener{

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thats how my code starts

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this refers to the JFrame i believe.

valid birch
# glossy light public class Program extends JFrame implements ActionListener{

yeah that refers to the frame. I would expect your code to look something like this:

public class Program extends JFrame implements ActionListener{
...
    //Inside some method
    JTextArea display = new JTextArea ();
    //Some further configuration of the JTextArea
    
    //Declaring the JScrollPane
    JScrollPane scroll = new JScrollPane ( display );
    scroll.setVerticalScrollBarPolicy ( ScrollPaneConstants.VERTICAL_SCROLLBAR_ALWAYS );

    //Add Textarea to the frame by adding the JScrollPane
    this.add (scroll);
    
    //At the very end, after you added every component to the frame
    this.setVisible(true)
...
glossy light
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yes, basically looks like this

valid birch
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show me how that part looks like in your code

glossy light
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this is the textarea and the scroll

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txtarea = new JTextArea();
txtarea.setBounds(30, 150, 600, 225);
txtarea.setEditable(false);
scroll = new JScrollPane(txtarea, JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED, JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED);
scroll.setVisible(true);
scroll.setBounds(630, 150, 20, 250);
txtarea.setBorder(BorderFactory.createEmptyBorder(0, 2, 2, 2));

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if i set the bound manually for the scrollpane it does show up now

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but i cant scroll the textarea

valid birch
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from the code you have given me it should work. However, since it doesn't this leads me to believe that you haven't given me the full relevant code.

glossy light
#

what part of the code u want?
its a long code
i have a button that reads a txt file and writes it into the textarea

valid birch
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I just need the code where you add all your components to the frame. That should be a single method

glossy light
valid birch
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remove this.add(txtarea)

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JScrollPane already contains your txtArea you are overlaying it

glossy light
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then the textarea doesnt show up

valid birch
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then show me the entire method please

glossy light
valid birch
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are you using null layout ?

glossy light
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SOLVED

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if i set the bounds for the scroll it shows up just as i wanted

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thank you so much man

rustic lynxBOT
# glossy light thank you so much man

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