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- 07-17-2007, 02:29 PM #1
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viewing the contents of a text file in JTextArea
hello.
I’m having difficulty trying to view the contents of a text file in a JTextArea. when i run the following program, i press the View Order button. but no data from the Order.txt file is being displayed in the text area (i've attached the .txt file to this message). how can i fix this problem?
Java Code:import java.awt.BorderLayout; import java.awt.event.*; import java.awt.*; import javax.swing.*; import java.io.*; public class ViewOrder extends JFrame{ JPanel pnlText, pnlBody, pnlFooter; JButton btnViewOrder; JButton btnReturnToOrderSystem; JLabel jl; JTextArea jta; Container contentpane; public ViewOrder(){ super("View Order"); contentpane = getContentPane(); contentpane.setLayout(new BorderLayout()); pnlText = new JPanel(); pnlBody = new JPanel(); pnlFooter = new JPanel(); jta = new JTextArea(250, 250); jta.setFont(new Font("Serif", Font.PLAIN, 12)); // Set lineWrap and wrapStyleWord true for the text area jta.setLineWrap(true); jta.setWrapStyleWord(true); jta.setEditable(false); // Create a scroll pane to hold the text area JScrollPane jsp = new JScrollPane(jta); // Set BorderLayout for the panel, add label and scrollpane pnlBody.add(jsp, BorderLayout.CENTER); jl = new JLabel("Text retrieved from file:"); btnViewOrder = new JButton("View Order"); btnReturnToOrderSystem = new JButton("Return to Order System Menu"); pnlText.add(jl); pnlFooter.add(btnViewOrder); pnlFooter.add(btnReturnToOrderSystem); contentpane.add(pnlText,BorderLayout.NORTH); contentpane.add(pnlBody,BorderLayout.CENTER); contentpane.add(pnlFooter,BorderLayout.SOUTH); setSize(500, 500); setVisible(true); btnViewOrder.addActionListener(new ActionListener(){ public void actionPerformed(ActionEvent e){ //Read from file try{ FileInputStream in = new FileInputStream("Order.txt"); BufferedReader iS = new BufferedReader(new InputStreamReader(in)); StringWriter sw = new StringWriter(); PrintWriter out = new PrintWriter(sw); String il; while ((il = iS.readLine()) != null){ out.println(il); } out.flush(); jta.setText(sw.toString()); in.close(); iS.close(); sw.close(); out.close(); } catch(java.io.IOException ex){ System.out.println("Cannot read from file"); } } }); btnReturnToOrderSystem.addActionListener(new ActionListener(){ public void actionPerformed(ActionEvent e){ setVisible(false); //OrderSystem os = new OrderSystem(); //os.setVisible(true); } }); } public static void main(String[] args){ new ViewOrder(); } }Last edited by JavaBean; 07-18-2007 at 04:51 PM.
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