CODEWITHSUNDEEP
javauser-interfacejframejpanel
wam090
wam090

Reputation: 2873

JScrollPane Not scrolling

I'm printing a text that I scanned from a text file to a JPanel. The text is showing up, but it's not scrolling down. Any ideas? Here is my code:

rFrame = new JFrame();
rFrame.setBounds(10, 10, 502, 502);
rFrame.getContentPane().setLayout(null);


JPanel pan = new JPanel();
pan.setBackground(Color.WHITE);
pan.setBounds(100, 100, 400, 400);
rFrame.getContentPane().add(pan);
pan.setEnabled(false);

JScrollPane scrollBar=new JScrollPane(pan,JScrollPane.VERTICAL_SCROLLBAR_ALWAYS,
                                          JScrollPane.HORIZONTAL_SCROLLBAR_ALWAYS);  

rFrame.add(scrollBar);

JTextArea area = new JTextArea();
area.setText(printToFrame()); //Function prints from text file
pan.add(area);
rFrame.add(pan);

rFrame.setVisible(true);
rFrame.setLayout(new FlowLayout());
rFrame.getContentPane().add(pan);
rFrame.pack();

ClientWindow window = new ClientWindow();
window.rFrame.setVisible(true);

Upvotes: 1

Views: 4506

Answers (1)

Alex
Alex

Reputation: 3181

It's not scrolling down because the dimensions of the JPanel is not larger than the viewport of the JScrollPane. You either have to increase the dimensions of the JPanel by calling *Object name*.setPreferredSize(new Dimension(int w, int h)), OR do it the proper way by displaying the text inside a JTextArea, which is a component made for this purpose.

Ex:

public static void main(String[] args) {
    JTextArea ta = new JTextArea();
    JScrollPane sp = new JScrollPane(ta);

    // disables editing
    ta.setEditable(false);

    // enable line wrap to wrap text around
    ta.setLineWrap(true);

    // words will not be cut off when wrapped around
    ta.setWrapStyleWord(true);

    // displays the text you read in
    ta.append( *text you read in* );
}

Oracle has a page on how to use JTextAreas, and you can also take a look at the API for other methods to use

Upvotes: 2

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