Adding a Scrollable JTextArea (Java)

28

I am trying to add a scroll bar to a JTextArea. Would someone please tell me what I did wrong with the code below?

JFrame frame = new JFrame ("Test");
JTextArea textArea = new JTextArea ("Test");

JScrollPane scrollV = new JScrollPane (textArea);
JScrollPane scrollH = new JScrollPane (textArea);

scrollV.setVerticalScrollBarPolicy(JScrollPane.VERTICAL_SCROLLBAR_ALWAYS);
scrollH.setHorizontalScrollBarPolicy(JScrollPane.HORIZONTAL_SCROLLBAR_ALWAYS);
frame.setVisible (true);

Thank you in advance.

EDIT: I fixed the code with the Adel Boutros' advice below.

    //FRAME
JFrame frame = new JFrame ("Test");
frame.setSize(500,500);
frame.setResizable(false);
//

//TEXT AREA
JTextArea textArea = new JTextArea("TEST");
textArea.setSize(400,400);    

    textArea.setLineWrap(true);
    textArea.setEditable(false);
    textArea.setVisible(true);

    JScrollPane scroll = new JScrollPane (textArea);
    scroll.setVerticalScrollBarPolicy(JScrollPane.VERTICAL_SCROLLBAR_ALWAYS);
          scroll.setHorizontalScrollBarPolicy(JScrollPane.HORIZONTAL_SCROLLBAR_ALWAYS);

    frame.add(scroll);
    frame.setVisible(true);
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

This question is tagged with java swing

~ Asked on 2012-01-13 10:27:27

The Best Answer is


44

It doesn't work because you didn't attach the ScrollPane to the JFrame.

Also, you don't need 2 JScrollPanes:

JFrame frame = new JFrame ("Test");
JTextArea textArea = new JTextArea ("Test");

JScrollPane scroll = new JScrollPane (textArea, 
   JScrollPane.VERTICAL_SCROLLBAR_ALWAYS, JScrollPane.HORIZONTAL_SCROLLBAR_ALWAYS);

frame.add(scroll);
frame.setVisible (true);

~ Answered on 2012-01-13 10:30:04


7

  1. Open design view
  2. Right click to textArea
  3. open surround with option
  4. select "...JScrollPane".

~ Answered on 2016-12-20 09:16:07


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