Computer scienceDesktopJava SwingSwing components

Scroll bars

Adding scroll bar to JTextArea

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Consider following code snippet, what is the correct way to add a vertical scroll bar to a JTextArea using JScrollPane in Java Swing?

JTextArea textArea = new JTextArea(5, 30);
// missing code
frame.getContentPane().add(panel);
frame.setVisible(true);

Select one or more options from the list

JScrollPane scrollPane = new JScrollPane(textArea, JScrollPane.VERTICAL_SCROLLBAR_ALWAYS, JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED);
panel.add(scrollPane);

JScrollPane scrollPane = new JScrollPane(textArea);
panel.add(scrollPane);

JScrollPane scrollPane = new JScrollPane(JScrollPane.VERTICAL_SCROLLBAR_ALWAYS, JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED);
scrollPane.add(textArea);
panel.add(scrollPane);

JScrollPane scrollPane = new JScrollPane();
scrollPane.add(textArea);
panel.add(scrollPane);

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