Trouble using scroll panel in textArea

Question

Hello all,
Im kinda stuck again I'm having a small simple problem where I'm reading the results of a search performed from a .txt file and I'm returning the results to a textArea but the only problem is that the textArea will not create a scroll bar when it is needed and i was wondering if anybody could help
public Container create_mainPanel()
//This creates the main panel that will hold the other panel
//that is used in this program
JPanel mainPanel = new JPanel();
mainPanel.setLayout(new BorderLayout());
//create JPanels
panel = new JPanel();
panel.setLayout(new BorderLayout());
textArea_panel = new JPanel();
textArea_panel.setLayout(new BorderLayout());
exit_button_panel = new JPanel();
exit_button_panel.setLayout(new BorderLayout());
//The grid layout is used to make a row with 2 buttons across and a column
panel.setLayout(new GridLayout(1 , 1));
search_field = new JTextField(20);
search_field.addActionListener(this);
textArea = new JTextArea(20 , 50);
scroll_panel = new JScrollPane(textArea , JScrollPane.VERTICAL_SCROLLBAR_ALWAYS ,
JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED);
scroll_panel.setBorder(BorderFactory.createEmptyBorder(0,20,10,20));
textArea.setEditable(false);
textArea_panel.add(textArea);
textArea_panel.setBorder(BorderFactory.createEmptyBorder(10 , 20 , 10 , 20));
//Create a search button that will connect to the Google Web site and performs
//a search on the behalf of the user and returns it in XML
JButton search_button = new JButton("Search the web...");
panel.add(search_button);
panel.add(search_field);
panel.setBorder(BorderFactory.createEmptyBorder(10 , 20 , 10 , 20));
//Creates a button that can be used to exit the applet
exit_button = new JButton("Exit");
//creates a button that can be used to display the results in the text area
display_button = new JButton("Display results on text area");
//adds the display_results button to the exit_button_panel
exit_button_panel.add(display_button);
//adds the Exit button to the exit_button_panel
exit_button_panel.add(exit_button);
exit_button_panel.setLayout(new GridLayout(0 , 1));
search_button.addActionListener(new search_button_listener());
exit_button.addActionListener(new exit_button_listener());
display_button.addActionListener(new display_button_listener());
//This code is used to specify where the panels should be put to be
//displayed on the main panel
//West is the left hand side, East is the right hand side,
//South is the bottom of the page, and North is the top of the page
mainPanel.add("North" , panel);
mainPanel.add("Center" , scroll_panel);
mainPanel.add("Center" , textArea_panel);
mainPanel.add("South" , exit_button_panel);
mainPanel.setBorder(BorderFactory.createEmptyBorder(10 , 10 , 10 , 10));
return mainPanel;
} //End of public Applet2()
Rgds,
Tony
[email protected]

Answer 1

I don't understand why you add textArea twice to mainPanel?
1. scroll_panel = new JScrollPane(textArea , JScrollPane.VERTICAL_SCROLLBAR_ALWAYS ,
JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED);
mainPanel.add("Center" , scroll_panel);2.textArea_panel.add(textArea);
mainPanel.add("Center" , textArea_panel);