Peter Phung

It's not really a solution but have you tried using a modal JDialog instead of a second frame?

can you post the stack trace from the error

How are you displaying the second applet? Are you trying to use the same html page as the first applet?

The value you return doesn't need to be generated from within the method itself. The value can be declared globally and then returned from the method.
class1 { public boolean doSomething() { try { //do something } catch (Exception e) { return false; } return true; } } class2 { boolean var; public boolean doSomething() { try { var = true; } catch (Exception e) { var = false; return var; } return var; } }
i hope this helps.
[ July 24, 2002: Message edited by: Peter Phung ]

Can anyone tell me how i can write a string to a file?
I've already got
InputStream in = saveTable.getText(); FileOutputStream out = new FileOutputStream(f); int counter = 0; while (true) { int bytes = in.read(buffer); if (bytes < 0) { break; } out.write(buffer, 0, bytes); counter += bytes; }
but clearly in is an InputStream and saveTable.getText(); is a string. How can i get around this?

Do i have to save the file with a specific file extension other than .txt?

can anybody tell me how i can save a JTable in a format that can be read easily by MS Excel?
thanks

please can anyone tell me how i can add a single item/object to a JList?
thanks

Hi everyone,
Can anyone please tell me how i can call a dialog from an applet?
Thanks

hi everyone,
I've written an applet but it is appearing larger than the display area. I havn't written any code which sizes the applet. can anyone tell me what i'm doing wrong?
My code :
public class SArequest extends JApplet { JButton b_submit, b_reset; JTextField f_title, f_history, f_name, f_phone, f_email, f_deadline, f_cRef; JTextArea a_objective, a_support, a_drawingRef; JScrollPane scroll_objective, scroll_support, scroll_drawingRef; JComboBox c_customer, c_project, c_location; JLabel l_title, l_cRef, l_customer, l_history, l_project, l_dRef, l_dRef_refer, l_originator, l_name, l_location, l_phone, l_email, l_deadline, l_objective, l_support, l_support_refer, l_DATE, l_SAREF; JLabel SAREF; Date DATE; SimpleDateFormat DATALogFormatter, DISPLAYFormatter, timeFormatter; String log_dateStr; GridBagLayout layout = new GridBagLayout(); GridBagConstraints gbc = new GridBagConstraints(); Color maroon = new Color(102,0,0); public void init() { b_submit = new JButton("Submit"); b_reset = new JButton("Reset"); f_title = new JTextField(50); f_cRef = new JTextField(20); f_history = new JTextField(10); f_name = new JTextField(50); f_phone = new JTextField(12); f_email = new JTextField(60); f_deadline = new JTextField(10); a_drawingRef = new JTextArea(); a_objective = new JTextArea(); a_support = new JTextArea(); scroll_drawingRef = new JScrollPane(a_drawingRef); scroll_drawingRef.setPreferredSize(new Dimension(100,100)); scroll_objective = new JScrollPane(a_objective); scroll_objective.setPreferredSize(new Dimension(100,100)); scroll_support = new JScrollPane(a_support); scroll_support.setPreferredSize(new Dimension(100,100)); c_customer = new JComboBox(); c_project = new JComboBox(); c_location = new JComboBox(); l_SAREF = new JLabel("S&A Reference :"); SAREF = new JLabel(); DATE = new Date(); SimpleDateFormat DATALogFormatter = new SimpleDateFormat("yyyy-MM-dd"); SimpleDateFormat DISPLAYFormatter = new SimpleDateFormat("dd-MMM-yyyy"); SimpleDateFormat timeFormatter = new SimpleDateFormat("HH:mm:ss"); String display_dateStr = DISPLAYFormatter.format(DATE); String log_dateStr = DATALogFormatter.format(DATE); String timeStr = timeFormatter.format(DATE); l_DATE = new JLabel("Date :"+display_dateStr+" Time :"+timeStr); l_title = new JLabel("Title :"); l_cRef = new JLabel("Customer Reference Number :"); l_customer = new JLabel("Customer :"); l_history = new JLabel("History Record :"); l_project = new JLabel("Internal Project No. :"); l_dRef = new JLabel("Drawing Reference :"); l_dRef_refer = new JLabel("Part No., Revision Level, File Location, Description, Material :"); l_originator = new JLabel("Originator :"); l_name = new JLabel("Name :"); l_location = new JLabel("Location :"); l_phone = new JLabel("Phone Number :"); l_email = new JLabel("E-Mail :"); l_deadline = new JLabel("Deadline :"); l_objective = new JLabel("Objective/Problem Description :"); l_support = new JLabel("Project Support :"); l_support_refer = new JLabel("Name, Phone, Fax, E-Mail :"); this.setForeground(maroon); this.setBackground(Color.white); this.getContentPane().setLayout(layout); gbc.anchor = GridBagConstraints.CENTER; gbc.fill = GridBagConstraints.HORIZONTAL; gbc.insets = new Insets(5,5,5,5); gbc.gridx = 0; gbc.gridy = 0; gbc.anchor = GridBagConstraints.WEST; gbc.gridwidth = 1; layout.setConstraints(l_SAREF, gbc); this.getContentPane().add(l_SAREF); gbc.gridx = 1; gbc.gridy = 0; gbc.gridwidth = 4; layout.setConstraints(SAREF, gbc); this.getContentPane().add(SAREF); gbc.gridx = 5; gbc.gridy = 0; gbc.gridwidth = 1; layout.setConstraints(l_DATE, gbc); this.getContentPane().add(l_DATE); gbc.gridx = 0; gbc.gridy = 1; gbc.gridwidth = 1; gbc.fill = GridBagConstraints.NONE; layout.setConstraints(l_title, gbc); this.getContentPane().add(l_title); gbc.gridx = 0; gbc.gridy = 2; gbc.gridwidth = 6; layout.setConstraints(f_title, gbc); this.getContentPane().add(f_title); gbc.gridx = 0; gbc.gridy = 3; gbc.gridwidth = 1; gbc.fill = GridBagConstraints.HORIZONTAL; layout.setConstraints(l_cRef, gbc); this.getContentPane().add(l_cRef); gbc.gridx = 1; gbc.gridy = 3; gbc.gridwidth = 1; layout.setConstraints(f_cRef, gbc); this.getContentPane().add(f_cRef); gbc.gridx = 0; gbc.gridy = 4; gbc.gridwidth = 1; layout.setConstraints(l_customer, gbc); this.getContentPane().add(l_customer); gbc.gridx = 1; gbc.gridy = 4; gbc.gridwidth = 1; layout.setConstraints(c_customer, gbc); this.getContentPane().add(c_customer); gbc.gridx = 2; gbc.gridy = 4; gbc.gridwidth = 1; layout.setConstraints(l_project, gbc); this.getContentPane().add(l_project); gbc.gridx = 3; gbc.gridy = 4; gbc.gridwidth = 1; layout.setConstraints(c_project, gbc); this.getContentPane().add(c_project); gbc.gridx = 4; gbc.gridy = 4; gbc.gridwidth = 1; layout.setConstraints(l_history, gbc); this.getContentPane().add(l_history); gbc.gridx = 5; gbc.gridy = 4; gbc.gridwidth = 1; layout.setConstraints(f_history, gbc); this.getContentPane().add(f_history); gbc.gridx = 0; gbc.gridy = 5; gbc.gridwidth = 1; layout.setConstraints(l_dRef, gbc); this.getContentPane().add(l_dRef); gbc.gridx = 0; gbc.gridy = 6; gbc.gridwidth = 1; layout.setConstraints(l_dRef_refer, gbc); this.getContentPane().add(l_dRef_refer); gbc.gridx = 0; gbc.gridy = 7; gbc.gridwidth = 6; gbc.fill = GridBagConstraints.NONE; layout.setConstraints(scroll_drawingRef, gbc); this.getContentPane().add(scroll_drawingRef); gbc.gridx = 0; gbc.gridy = 8; gbc.gridwidth = 1; layout.setConstraints(l_originator, gbc); this.getContentPane().add(l_originator); gbc.gridx = 0; gbc.gridy = 9; gbc.gridwidth = 1; gbc.anchor = GridBagConstraints.EAST; gbc.fill = GridBagConstraints.NONE; layout.setConstraints(l_name, gbc); this.getContentPane().add(l_name); gbc.gridx = 1; gbc.gridy = 9; gbc.gridwidth = 1; gbc.anchor = GridBagConstraints.WEST; layout.setConstraints(f_name, gbc); this.getContentPane().add(f_name); gbc.gridx = 0; gbc.gridy = 10; gbc.gridwidth = 1; gbc.anchor = GridBagConstraints.EAST; gbc.fill = GridBagConstraints.NONE; layout.setConstraints(l_location, gbc); this.getContentPane().add(l_location); gbc.gridx = 1; gbc.gridy = 10; gbc.gridwidth = 1; gbc.anchor = GridBagConstraints.WEST; layout.setConstraints(c_location, gbc); this.getContentPane().add(c_location); gbc.gridx = 0; gbc.gridy = 11; gbc.gridwidth = 1; gbc.anchor = GridBagConstraints.EAST; gbc.fill = GridBagConstraints.NONE; layout.setConstraints(l_phone, gbc); this.getContentPane().add(l_phone); gbc.gridx = 1; gbc.gridy = 11; gbc.gridwidth = 1; gbc.anchor = GridBagConstraints.WEST; layout.setConstraints(f_phone, gbc); this.getContentPane().add(f_phone); gbc.gridx = 0; gbc.gridy = 12; gbc.gridwidth = 1; gbc.anchor = GridBagConstraints.EAST; gbc.fill = GridBagConstraints.NONE; layout.setConstraints(l_email, gbc); this.getContentPane().add(l_email); gbc.gridx = 1; gbc.gridy = 12; gbc.gridwidth = 1; gbc.anchor = GridBagConstraints.WEST; layout.setConstraints(f_email, gbc); this.getContentPane().add(f_email); gbc.gridx = 0; gbc.gridy = 13; gbc.gridwidth = 1; gbc.anchor = GridBagConstraints.EAST; gbc.fill = GridBagConstraints.NONE; layout.setConstraints(l_deadline, gbc); this.getContentPane().add(l_deadline); gbc.gridx = 1; gbc.gridy = 13; gbc.gridwidth = 1; gbc.anchor = GridBagConstraints.WEST; layout.setConstraints(f_deadline, gbc); this.getContentPane().add(f_deadline); gbc.gridx = 0; gbc.gridy = 14; gbc.gridwidth = 1; gbc.anchor = GridBagConstraints.WEST; layout.setConstraints(l_objective, gbc); this.getContentPane().add(l_objective); gbc.gridx = 0; gbc.gridy = 15; gbc.gridwidth = 6; gbc.anchor = GridBagConstraints.WEST; layout.setConstraints(scroll_objective, gbc); this.getContentPane().add(scroll_objective); gbc.gridx = 0; gbc.gridy = 16; gbc.gridwidth = 1; gbc.anchor = GridBagConstraints.WEST; layout.setConstraints(l_support, gbc); this.getContentPane().add(l_support); gbc.gridx = 0; gbc.gridy = 17; gbc.gridwidth = 1; gbc.anchor = GridBagConstraints.WEST; layout.setConstraints(l_support_refer, gbc); this.getContentPane().add(l_support_refer); gbc.gridx = 0; gbc.gridy = 18; gbc.gridwidth = 6; gbc.anchor = GridBagConstraints.WEST; layout.setConstraints(scroll_support, gbc); this.getContentPane().add(scroll_support); gbc.gridx = 0; gbc.gridy = 19; gbc.gridwidth = 1; gbc.anchor = GridBagConstraints.WEST; layout.setConstraints(b_submit, gbc); this.getContentPane().add(b_submit); gbc.gridx = 5; gbc.gridy = 19; gbc.gridwidth = 1; gbc.anchor = GridBagConstraints.EAST; layout.setConstraints(b_reset, gbc); this.getContentPane().add(b_reset); } }
This is the only code i have, no other parts of the GUI have been written.

I used SimpleDateFormat because that's all i needed.
Thanks to both Rene's, your help was much appreciated.

Everything's been sorted out now. I deleted all of the old class files and recompiled and it works fine.
It looks like the application was running an older class file.

I've written an application, it's working ok except that it's skipping a few lines of code. I'm not getting any compile time errors or any runtime errors. I've included part of my application where the code is being skipped, and the methods that it's meant to execute.
Thread download = new Thread() { public void run() { if (setDirectory("download")) { if (file.exists()) { proceed.setMessage(fName); if (proceed.hasPressed()) { if (proceed.shouldProceed()) { if (file.canWrite()) { System.out.println("xxxxxx"+logEntry);//this line is being skipped createLogEntry();//this line is being skipped getFile(CGM, dlDir);//this line is working } else { error.setMessage("Specified file is write protected"); } } } } getFile(CGM, dlDir); disconnect(); taDisplay.appendText("\nDisconnected"); } } }; //methods i'm trying to execute boolean loadDBDriver() { try { // The newInstance call is a workaround for some // broken Java implementations Class.forName("org.gjt.mm.mysql.Driver").newInstance(); } catch (Exception E) { JOptionPane.showMessageDialog(this,"*** Error ***\nCouldn't load Database Driver - I quit"); return false; } return true; } //====================================================================== // We try to connect to the database now // input: - // output: // boolean error - OK true / NOK false //====================================================================== boolean getDBConnection () { String connectionStr = "jdbc:mysql://"+db_host+"/" +db_Database+"?user="+db_user+"&password="+db_passwd; // System.out.println(connectionStr); try { connection = DriverManager.getConnection(connectionStr); } catch (SQLException E) { JOptionPane.showMessageDialog(this,"*** Error ***\nCouldn't connect to database - I quit"); System.out.println("SQLException: "+E.getMessage()); System.out.println("SQLState : "+E.getSQLState()); System.out.println("VendorError : "+E.getErrorCode()); return false; } return true; } private void createLogEntry(){ if (!loadDBDriver()) System.exit(0); if (!getDBConnection()) System.exit(0); try { Statement stmt = connection.createStatement(); ResultSet RS; System.out.println("i get here"); RS = stmt.executeQuery(logUpdate); System.out.println("i got further"); RS = stmt.executeQuery(logEntry); System.out.println("i got even further"); } catch (SQLException e) { System.out.println("SQLException: "+e.getMessage()); System.out.println("SQLState : "+e.getSQLState()); System.out.println("VendorError : "+e.getErrorCode()); e.printStackTrace(); //return false; } }
Please can anyone help me to solve this?

This sounds like a homework question so i'm not gonna give you much. But you should be looking at java.lang.string
http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html

How have you set up the html page in which your applet is embedded?
I wrote a page which loaded the plugin each time the page was accessed.
Here's the code i used :
<OBJECT classid="clsid:8AD9C840-044E-11D1-B3E9-00805F499D93" WIDTH = 800 HEIGHT = 340 codebase="http://java.sun.com/products/plugin/1.3/jinstall-13-win32.cab#Version=1,3,0,0"> <PARAM NAME = CODE VALUE = "MyApplet.class" > <PARAM NAME = CODEBASE VALUE = "." > <PARAM NAME = ARCHIVE VALUE = "mysql_comp.jar" > <PARAM NAME="type" VALUE="application/x-java-applet;version=1.3"> <COMMENT> <EMBED type="application/x-java-applet;version=1.3" java_CODE = "MyApplet.class" java_CODEBASE = "." java_ARCHIVE = "mysql_comp.jar" WIDTH = 800 HEIGHT = 340 scriptable=false pluginspage="http://java.sun.com/products/plugin/1.3/plugin-install.html"> <NOEMBED> </COMMENT> If you can read this, it means that your browser does not recognise java applets </NOEMBED> </EMBED>
HTH
[ July 10, 2002: Message edited by: Peter Phung ]