Unable to make the JTextArea scrollable..!
Here is my code:
final JTextArea textArea = new JTextArea();
textArea.setFont(new Font(\"MS UI Gothic\", Font.PLAIN, 13));
textArea.setLineWrap(true);
textArea.s
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I don't think you need to do
contentPane.add(textArea);. It is this line that is causing the problem. Comment out this and your code should work fine.See this answer, it might help you.
The following code runs fine at my place :
final JTextArea textArea = new JTextArea(); textArea.setFont(new Font("MS UI Gothic", Font.PLAIN, 13)); textArea.setLineWrap(true); textArea.setBounds(77, 310, 474, 136); JScrollPane sbrText = new JScrollPane(textArea); sbrText.setVerticalScrollBarPolicy(JScrollPane.VERTICAL_SCROLLBAR_ALWAYS); frame.getContentPane().add(sbrText);//contentPane.add(sbrText); frame.setVisible(true);If your code is not running fine then you must have some other error probably related to your
contentpane.讨论(0) -
Here I have done, the same thingy using
Nested Layout, have a look at the code example :import java.awt.*; import javax.swing.*; public class WelcomeExample { private JPanel headerPanel; private JButton logoutButton; private JPanel leavePanel; private JRadioButton casualRButton; private JRadioButton specialRButton; private JRadioButton sickRButton; private JRadioButton privilegeRButton; private ButtonGroup radioButtonGroup; private JTextField leaveDaysField; private JButton checkLeaveButton; private JTextArea notesArea; private JScrollPane notesScroller; private JButton applyLeaveButton; private String headerText = "<html><body><h1><font " + "color=\"red\">Welcome : </font><font color" + "=\"blue\">Code Zero</font></h1></body></html>"; private void displayGUI() { JFrame frame = new JFrame("Welcome"); frame.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE); JPanel contentPane = new JPanel(); contentPane.setLayout(new BorderLayout(5, 5)); contentPane.setBorder( BorderFactory.createEmptyBorder(5, 5, 5, 5)); headerPanel = getHeaderPanel(); leavePanel = getLeavePanel(); contentPane.add(headerPanel, BorderLayout.PAGE_START); contentPane.add(leavePanel, BorderLayout.CENTER); contentPane.add(getApplyPanel(), BorderLayout.PAGE_END); frame.setContentPane(contentPane); frame.pack(); frame.setLocationByPlatform(true); frame.setVisible(true); } private JPanel getHeaderPanel() { JPanel panel = new JPanel(); panel.setLayout(new BorderLayout(5, 5)); panel.setBorder(BorderFactory.createEmptyBorder(5, 5, 5, 5)); JLabel headerLabel = new JLabel(headerText, JLabel.CENTER); JPanel buttonPanel = new JPanel(); logoutButton = new JButton("Logout"); buttonPanel.add(logoutButton); panel.add(headerLabel, BorderLayout.CENTER); panel.add(buttonPanel, BorderLayout.LINE_END); panel.add(new JSeparator( SwingConstants.HORIZONTAL), BorderLayout.PAGE_END); return panel; } private JPanel getLeavePanel() { JPanel panel = new JPanel(); panel.setLayout(new BorderLayout(5, 5)); panel.setBorder(BorderFactory.createEmptyBorder(5, 5, 5, 5)); JPanel leaveHeaderPanel = new JPanel(); leaveHeaderPanel.setLayout(new GridLayout(0, 1, 5, 5)); leaveHeaderPanel.setBorder( BorderFactory.createTitledBorder("Choose a leave type : ")); JPanel leaveTypePanel = new JPanel(); leaveTypePanel.setLayout(new FlowLayout( FlowLayout.LEFT, 5, 5)); casualRButton = new JRadioButton("Casual Leave"); specialRButton = new JRadioButton("Special Leave"); sickRButton = new JRadioButton("Sick Leave"); privilegeRButton = new JRadioButton("Privilege Leave"); radioButtonGroup = new ButtonGroup(); radioButtonGroup.add(casualRButton); radioButtonGroup.add(specialRButton); radioButtonGroup.add(sickRButton); radioButtonGroup.add(privilegeRButton); leaveTypePanel.add(casualRButton); leaveTypePanel.add(specialRButton); leaveTypePanel.add(sickRButton); leaveTypePanel.add(privilegeRButton); JPanel applyLeavePanel = new JPanel(); applyLeavePanel.setLayout(new FlowLayout( FlowLayout.LEFT, 5, 5)); JLabel applyLeaveLabel = new JLabel( "Apply for (No. of days) : ", JLabel.CENTER); leaveDaysField = new JTextField(5); checkLeaveButton = new JButton("Check Leave Availability"); applyLeavePanel.add(applyLeaveLabel); applyLeavePanel.add(leaveDaysField); applyLeavePanel.add(checkLeaveButton); leaveHeaderPanel.add(leaveTypePanel); leaveHeaderPanel.add(applyLeavePanel); notesArea = new JTextArea(10, 10); notesScroller = new JScrollPane(); notesScroller.setBorder( BorderFactory.createTitledBorder( "Leave Note (Max. 200 Characters) : ")); notesScroller.setViewportView(notesArea); panel.add(leaveHeaderPanel, BorderLayout.PAGE_START); panel.add(notesScroller, BorderLayout.CENTER); return panel; } private JPanel getApplyPanel() { JPanel panel = new JPanel(); applyLeaveButton = new JButton("Apply"); panel.add(applyLeaveButton); return panel; } public static void main(String[] args) { Runnable runnable = new Runnable() { @Override public void run() { new WelcomeExample().displayGUI(); } }; EventQueue.invokeLater(runnable); } }OUTPUT :
讨论(0) -
Ok...I finally got it to work...I specified the same set bounds in the scroll pane instead of the text area.. Here is the code.!!! ^_^
final JTextArea textArea = new JTextArea(); textArea.setFont(new Font("MS UI Gothic", Font.PLAIN, 13)); textArea.setLineWrap(true); //textArea.setBounds(77, 310, 474, 136); JScrollPane scroll = new JScrollPane (textArea, JScrollPane.VERTICAL_SCROLLBAR_ALWAYS, JScrollPane.HORIZONTAL_SCROLLBAR_NEVER); scroll.setBounds(77, 310, 474, 136); contentPane.add(scroll);Here are the screenshots:
Previous: http://oi40.tinypic.com/11jyum0.jpg
Now: http://oi44.tinypic.com/2s9vdvt.jpg讨论(0)
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