tom brownlee

excellent guys..thanks for the feedback

i have a text game im creating that has a 3x3 dimensioned space. i.e. 9 rooms in a 3x3 pattern. each room contains a jewel. i have a commandWords class that contains methods etc to read info from user. i also have a command class that determines first word and second word entries from the user i.e take jewel. my problem was in the game class that initiates the game i have a method 'take'.
private void take(Command command) { if(!command.hasSecondWord()) { // if there is no second word, we don't know what to pick up... System.out.println("take what?"); return; } String jewelColour = new String(command.getSecondWord()); Jewel jewelInRoom = jewelColour; System.out.println(jewelColour); //test to see if object is returned
here you can see that the second word is in the form of a colour (initial beginnings - it will get better) i.e. take Orange.
so here jewelColour equals the second word from the user (Orange). i need to cast it to the object Jewel (jewelInRoom) so i can manipulate it i.e. using if statements or while etc.
at the moment im printing to the console to test if im getting the cast right but i get the compile error due to the casting.

// the above code carries on here Jewel noJewel = new Jewel("no Jewel"); //the 'Jewel' class has the parimeter "description" if (jewelInRoom != noJewel) { currentRoom.setContainedJewel(noJewel); currentJewel = currentRoom.getContainedJewel(); System.out.println(currentJewel.shortJewelDescription()); } else { System.out.println("There is no jewel in here!"); }
here i have in the 'Room' class two methods setContainedJewel and getContainedJewel in which i can change the jewel in each room when i 'take' the jewel.
does this help?
[ March 25, 2003: Message edited by: Dirk Schreckmann ]

how do i convert (cast) a String to an Object,
i.e
input a String from user and cast it to an Object to be manipulated

how can i put an object as the value in a hashmap
eg
hashMap.put("some key" , Object);
in my code i have a user enter in a jewel color where it should look up the hash table with the jewel colour as the key returning the jewel as an object in which i can then manipulate with other methods.
how do i do this?
thankyou

how do i initialize a class reference?
what i mean is: for int its, int i = 0;
for String its, String s = "";
so to use a method from another class i would use, say (my problem code)
class Game { private Jewel currentJewel; //code emitted Jewel jewelInRoom = currentJewel.jewelInRoom(description)
where the 'jewelInRoom' method is in the Jewel class.
everytime i compile it, it works but at runtime i get a problem where i haven't initialized 'currentJewel'. i presume if i initialize the currentJewel to a color(parimeter of Jewel) the code wont work. well at least it didnt when i did it. i tested it by printing out jewelInRoom and i got 'null' on the screen when i should of got the jewel color(more code needed to understand) i know theres more code to add to properly make this sound sane but am i doing it right...is it because im initializing currentJewel to a color that i get 'null' on screen, or is there an initializing code to use to make this work? as with int i = 0; or String s = '';

awesome corey..thanks for the help..it did work...
my problem now is how do i access a method in a class from inside another class.
ie access the method jewelDescription in the Jewel class from the Room class (where i print out the jewel description as i move from room to room)
public String longDescription() { return "You are in " + description + " with the " ???? + ".\n"; }
here ??? represents what i need to add to display the jewel description in that particular room.

hi people...a question all the way from new zealand.
i have an assignment, of which i can choose, the only rule is that it must be a short text based adventure game. simple?. well my game is a jewel game. heres my problem.
it has nine rooms (3x3) of which you start in a room and move through the rooms by the 'go' command. each movement is by way of north,south, east,west. ie go north.
this movement will return the room, in my case the rooms are labelled as colours. this is ok for me to code. BUT, in each room is a coloured jewel, the same colours as the room colours, but a different coloured jewel in each room, the goal of my game(to win)is to put a specific jewel in a specific room by way of a 'pick up' and 'put down' method, using clues(im not sure yet),
the problem??
how do i assign the coloured jewel to the room.
(and i suppose i should ask also how can i move jewel, from room to room).
below is my game class...(1 class from 6)
class Game { private Parser parser; private Room currentRoom; private Item currentItem; /** * Create the game and initialise its internal map. */ public Game() { createRooms(); createJewels(); parser = new Parser(); } private void createJewels() { Jewel White,Red,Blue,Green,Black,Yellow,Pink,Orange,Purple; White = new Jewel("The White Jewel"); Red = new Jewel("The Red Jewel"); Blue = new Jewel("The Blue Jewel"); Green = new Jewel("The Green Jewel"); Black = new Jewel("The Black Jewel"); Yellow = new Jewel("The Yellow Jewel"); Pink = new Jewel("The Pink Jewel"); Orange = new Jewel("The Orange Jewel"); Purple = new Jewel("The Purple Jewel"); // White.setRoom(purple); ???? // Red.swetRoom(orange); ???? // Blue.setRoom(pink); ???? // Green.setRoom(yellow); ???? // Black.setRoom(white); ???? // Yellow.setRoom(blue); ???? // Pink.setRoom(red); ???? // Orange.setRoom(green); ???? // Purple.setRoom(black); ???? /** * Create all the rooms and link their exits together. */ private void createRooms() { Room red, blue, green, yellow, orange, purple, black, white, pink; // create the rooms red = new Room("The Red Room"); blue = new Room("The Blue Room"); green = new Room("The Green Room"); yellow = new Room("The Yellow Room"); orange = new Room("The Orange Room"); purple = new Room("The Purple Room"); black = new Room("The Black Room"); white = new Room("The White Room"); pink = new Room("The Pink Room"); // initialise room exits white.setExits(green, null, null, red); red.setExits(black, white, null, blue); blue.setExits(yellow, red, null, null); green.setExits(pink, null, white, black); black.setExits(orange, green, red, yellow); yellow.setExits(purple, black, blue, null); pink.setExits(null, null, green, orange); purple.setExits(null, orange, yellow, null); orange.setExits(null, pink, black, purple); currentRoom = white; // start game in Room 'White' // plus etra code // also, capital colours represent the jewel while lower caps colours represent the room ///////////////////////////////////////////// and to make sense here are the setExit method(Room class) and (what im confused about) setRoom method (Jewel class) /////////////////////////////////////// public Room(String description) { this.description = description; exits = new HashMap(); } /** * Define the exits of this room. Every direction either leads to * another room or is null (no exit there). */ public void setExits(Room north, Room east, Room south, Room west) { if(north != null) exits.put("north", north); if(east != null) exits.put("east", east); if(south != null) exits.put("south", south); if(west != null) exits.put("west", west); } // plus extra code ////////////////////////////// //////////////////////////// class Jewel { private String description; private HashMap hashjewelInRoom; // stores jewels in a room. /** * Create a Jewel described "description". Initially, it has no colour. * "description" is something like "Red" or "Green". */ public Jewel(String description) { this.description = description; hashjewelInRoom = new HashMap(); } /** * Define the Jewels in this room. */ public void setJewel(Jewel White,Jewel Red,Jewel Blue,Jewel Green, Jewel Black,Jewel Yellow,Jewel Pink, Jewel Orange,Jewel Purple) { if(???? != null) hashjewelInRoom.put(????); if(???? != null) hashjewelInRoom.put(????); if(???? != null) hashjewelInRoom.put(????); if(???? != null) hashjewelInRoom.put(????); }
//////////////////
as you can see here i have no clue to what i should do next. no idea as to what i should do to allocate a jewel to a room.
please any help would be marvellous!
thankyou

(edited by Cindy to format code using [ code] and [ /code] tags without the spaces)
[ March 18, 2003: Message edited by: Cindy Glass ]

Hi dirk, , my apologise for the confusion
after i posted the question i conceived the answer i needed. my next question that you ask about is this.
how do i store (save) a users details (first name, last name etc.) so that when they enter or re-enter their "code" they will be able to see these entries (first name, last name etc).
also how do i implement saving details if the users code does not exist and they are able to enter details to be saved under this code
(and hence re-entering the code to see these newly added details) or when they wish to modify their details?
does that make more sense dirk?
thanks for the help, i truly appreciate it.
tom

Well ive discovered a crude but working way to implement my validation but now i need to know how to store user information ( firstname, lastname etc) into a hashtable and retrieve this information based upon the employee code entered in the employee code textfield.
therefore when the first code and password are valid the employee code is entered which should return the information of the appropriate employee with that code, but if it doesnt the user can enter new information and then store this via a GUI "add" button
any help?

thanks guys

Sorry Guys...
im using BlueJ to run my java code and therefore im using a TestRunner class to run my code. I didnt include the main() method to run the code when i posted it to you.
here it is
public static void main( String[] args ) { EmployeeDetails ed = new EmployeeDetails( new JFrame() ); }
tom

hello there,
my problem is one of frustration and impatience.
I have a swing GUI interface (code written below)that asks for a code and a password. I need to check the validity of both to enable the program to proceed.
how do i acccomplish this?
The code and password has to be stored somewhere in the program. (hashtable or vector or file etc).
As you may see when running the code, i also have to store and be able to retrieve information when put in by a user, but i thought id start out slowly. I am a reasonably competent java user, so please throw anything at me
My apologise if this isnt a beginner question, it seemed a good place to start.
import java.util.*; import javax.swing.text.*; import javax.swing.*; import javax.swing.border.*; import java.awt.*; import java.awt.event.*; public class EmployeeDetails extends JFrame implements ActionListener { JTextField txt1; JTextField txt2; JTextField txt3; JTextField txt4; JTextField txt5; JPasswordField passwordField; JTextArea area; JLabel message; JButton modifyBtn; JButton clearBtn; JButton deleteBtn; JButton addBtn; JButton retrieveBtn; JButton exitBtn; JComboBox combo3; JLabel lbl12; String a = "ChChPCmrc"; String b = "ChChPScnc"; String d = "ChChPEngr"; String e = "ChChPNurs"; String f = "ChChPHosp"; public EmployeeDetails( JFrame frame ) { super ( "Brownlee Computer Systems"); setBounds( 100, 50, 650, 500); GridBagConstraints c = new GridBagConstraints(); EmptyBorder border = new EmptyBorder( new Insets( 0, 0, 0, 2 ) ); EmptyBorder border1 = new EmptyBorder( new Insets( 0, 4, 0, 2 ) ); c.insets = new Insets( 1, 1, 1, 1 ); c.anchor = GridBagConstraints.WEST; IntegerDocument1 FirstFourDigitDocument = new IntegerDocument1(); IntegerDocument2 SixDigitDocument = new IntegerDocument2(); IntegerDocument3 SecondFourDigitDocument = new IntegerDocument3(); IntegerDocument4 EightDigitDocument = new IntegerDocument4(); IntegerDocument5 TwentyDigitDocument = new IntegerDocument5(); IntegerDocument6 SecondTwentyDigitDocument = new IntegerDocument6(); // Creates a panel to hold all components getContentPane().setLayout(new BorderLayout()); ((JPanel)getContentPane()).setOpaque(false); Dimension dim = getToolkit().getScreenSize(); getContentPane().setLocation(dim.width/2 - getContentPane().getWidth()/2, dim.height/2 - getContentPane().getHeight()/2); JPanel panel1 = new JPanel(); panel1.setLayout(new FlowLayout(FlowLayout.CENTER)); panel1.setOpaque(false); JLabel lbl1 = new JLabel("Employee Maintenance Screen"); lbl1.setFont(new Font("Arial", Font.BOLD, 36)); panel1.add(lbl1); getContentPane().add(panel1, BorderLayout.NORTH); JPanel panelEast = new JPanel(); panelEast.setOpaque(false); panelEast.setLayout(new FlowLayout()); panelEast.setBorder( BorderFactory.createEmptyBorder(0,10,0,10)); getContentPane().add(panelEast, BorderLayout.EAST); JPanel panelWest = new JPanel(); panelWest.setOpaque(false); panelWest.setLayout(new FlowLayout()); panelWest.setBorder( BorderFactory.createEmptyBorder(0,10,0,10)); getContentPane().add(panelWest, BorderLayout.WEST); JPanel panel2 = new JPanel(); panel2.setOpaque(false); panel2.setLayout(new BorderLayout()); getContentPane().add(panel2, BorderLayout.CENTER); JPanel panel2a = new JPanel(); panel2a.setLayout(new GridBagLayout()); Border compound = BorderFactory.createCompoundBorder(new BevelBorder( BevelBorder.LOWERED),new EmptyBorder( 5,5,5,5)); Border compound1 = BorderFactory.createTitledBorder(compound, "Employee Security", 0, 0, null, Color.red); panel2a.setBorder(compound1); panel2.add(panel2a, BorderLayout.NORTH); JLabel lbl2 = new JLabel( "Maintenance Operation Code"); lbl2.setFont(new Font("Helvetica", Font.BOLD, 14 )); lbl2.setForeground (Color.blue); lbl2.setBorder ( border ); c.gridx = 0; c.gridy = 0; c.anchor = GridBagConstraints.WEST; panel2a.add( lbl2, c ); txt1 = new JTextField(4); c.gridx = 1; c.gridy = 0; c.anchor = GridBagConstraints.WEST; txt1.setEnabled ( true ); panel2a.add( txt1, c ); JLabel lbl3 = new JLabel( "Password" ); lbl3.setFont(new Font("Helvetica", Font.BOLD, 14 )); lbl3.setForeground(Color.blue); lbl3.setBorder ( border ); c.gridx = 0; c.gridy = 1; c.anchor = GridBagConstraints.WEST; panel2a.add( lbl3, c ); passwordField = new JPasswordField(6); c.gridx = 1; c.gridy = 1; c.anchor = GridBagConstraints.WEST; passwordField.setEnabled ( true ); panel2a.add( passwordField, c ); JLabel lbl4 = new JLabel( "Employee Code" ); lbl4.setFont(new Font("Helvetica", Font.BOLD, 14 )); lbl4.setForeground(Color.blue); lbl4.setBorder ( border ); c.gridx = 0; c.gridy = 2; c.gridwidth = 1; c.gridheight = 1; c.anchor = GridBagConstraints.WEST; panel2a.add( lbl4, c ); txt2 = new JTextField(4); c.gridx = 1; c.gridy = 2; c.anchor = GridBagConstraints.WEST; txt2.setEnabled( false ); panel2a.add( txt2, c ); JPanel panel2b = new JPanel(); panel2b.setLayout(new GridBagLayout()); Border compound4 = BorderFactory.createCompoundBorder(new BevelBorder( BevelBorder.LOWERED),new EmptyBorder( 5,5,5,5)); Border compound5 = BorderFactory.createTitledBorder(compound4, "Employee Details", 0, 0, null, Color.red); panel2b.setBorder(compound5); panel2.add(panel2b, BorderLayout.CENTER); JPanel panel2c = new JPanel(); panel2c.setLayout(new FlowLayout( FlowLayout.CENTER )); Border compound2 = BorderFactory.createCompoundBorder(new BevelBorder( BevelBorder.LOWERED),new EmptyBorder( 5,5,5,5)); Border compound3 = BorderFactory.createTitledBorder(compound2);//, "", 0, 0, null, Color.red); message = new JLabel(); message.setFont(new Font("Arial", Font.BOLD, 15)); message.setText ("Enter Maintenance Operative Code and Password then click \"Retrieve\" button"); message.setEnabled ( true ); panel2c.setBorder(compound3); panel2c.add(message); panel2.add(panel2c, BorderLayout.SOUTH); JLabel lbl5 = new JLabel( "First Name" ); lbl5.setForeground(Color.blue); lbl5.setBorder ( border ); c.gridx = 0; c.gridy = 0; c.gridwidth = 2; panel2b.add( lbl5, c ); txt3 = new JTextField(20); c.gridx = 2; c.gridwidth = 2; txt3.setEnabled( false ); panel2b.add( txt3, c ); JLabel lbl7 = new JLabel( "Last Name" ); lbl7.setForeground(Color.blue); lbl7.setBorder ( border ); c.gridx = 0; c.gridy = 1; c.gridwidth = 2; panel2b.add( lbl7, c ); txt4 = new JTextField(20); c.gridx = 2; c.gridwidth = 2; txt4.setEnabled( false ); panel2b.add( txt4, c ); JLabel lbl6 = new JLabel( "Department Code" ); lbl6.setForeground(Color.blue); lbl6.setBorder( border1 ); c.gridx = 4; c.gridy = 0; c.gridwidth = 2; panel2b.add( lbl6, c ); combo3 = new JComboBox(); combo3.addItem( a ); combo3.addItem( b ); combo3.addItem( d ); combo3.addItem( e ); combo3.addItem( f ); c.gridx = 6; combo3.setEnabled( false ); panel2b.add( combo3, c ); MyItemListener actionListener = new MyItemListener(); combo3.addItemListener(actionListener); lbl12 = new JLabel(); lbl12.setBorder ( border ); lbl12.setFont(new Font("", Font.BOLD, 16)); lbl12.setEnabled( true ); lbl12.setText("Commerce"); c.gridx = 6; c.gridy = 1; c.gridwidth = 2; panel2b.add( lbl12, c ); JLabel lbl9 = new JLabel( "IRD Number" ); lbl9.setForeground(Color.blue); lbl9.setBorder ( border ); c.gridx = 0; c.gridy = 2; c.gridwidth = 2; panel2b.add( lbl9, c ); txt5 = new JTextField(8); c.gridx = 2; c.gridwidth = 2; txt5.setEnabled( false ); panel2b.add( txt5, c ); txt5.addKeyListener (new KeyAdapter() { public void keyTyped(KeyEvent e) { char c = e.getKeyChar(); if (!((Character.isDigit(c) || (c == KeyEvent.VK_BACK_SPACE) || (c == KeyEvent.VK_DELETE)))) { getToolkit().beep(); e.consume(); } } }); JLabel lbl8 = new JLabel( "Gender" ); lbl8.setForeground(Color.blue); lbl8.setBorder ( border1 ); c.gridx = 5; c.gridy = 2; c.anchor = GridBagConstraints.EAST; c.gridwidth = 1; panel2b.add( lbl8, c ); JPanel radioPanel = new JPanel(); // Create a FlowLayout JPanel with 5 pixel horizontal gaps // and no vertical gaps radioPanel.setLayout( new FlowLayout( FlowLayout.LEFT, 5, 0 ) ); ButtonGroup group = new ButtonGroup(); JRadioButton radio1 = new JRadioButton( "Male" ); radio1.setSelected( true ); radio1.setEnabled( false ); group.add( radio1 ); JRadioButton radio2 = new JRadioButton( "Female" ); radio2.setEnabled( false ); group.add( radio2 ); radioPanel.add( radio1 ); radioPanel.add( radio2 ); c.gridx = 6; c.gridwidth = 2; c.anchor = GridBagConstraints.CENTER; panel2b.add( radioPanel, c); JLabel lbl10 = new JLabel( "Notes" ); lbl10.setForeground(Color.blue); lbl10.setBorder ( border ); c.gridx = 0; c.gridy = 3; c.gridwidth = 2; panel2b.add( lbl10, c ); area = new JTextArea( 5, 10 ); JScrollPane scroll = new JScrollPane (area); c.gridx = 2; c.gridwidth = 10; // span across 10 columns c.gridheight = 5; // span across 5 rows c.fill = GridBagConstraints.BOTH; // fills the cols & rows area.setEnabled( false ); area.setLineWrap ( true ); area.setWrapStyleWord ( true ); panel2b.add( scroll, c ); JPanel panel3 = new JPanel(); panel3.setOpaque(false); panel3.setLayout(new FlowLayout(FlowLayout.CENTER)); getContentPane().add(panel3, BorderLayout.SOUTH); modifyBtn = new JButton( "Modify" ); modifyBtn.setEnabled( false ); panel3.add(modifyBtn); clearBtn = new JButton( "Clear" ); clearBtn.setEnabled( false ); clearBtn.addActionListener(this); panel3.add(clearBtn); deleteBtn = new JButton( "Delete" ); deleteBtn.setEnabled( false ); panel3.add(deleteBtn); addBtn = new JButton( "Add" ); addBtn.setEnabled( false ); panel3.add(addBtn); retrieveBtn = new JButton( "Retrieve" ); retrieveBtn.setEnabled( true ); retrieveBtn.addActionListener ( this ); panel3.add( retrieveBtn ); exitBtn = new JButton( "Exit" ); exitBtn.addActionListener ( this ); panel3.add(exitBtn); final ImageIcon m_image = new ImageIcon("a:/EmployeeDetails/Cabg08.jpg"); final int winc = m_image.getIconWidth(); final int hinc = m_image.getIconHeight(); JLabel backlabel = new JLabel(""); if (m_image.getIconWidth() > 0 && m_image.getIconHeight() > 0) { backlabel = new JLabel() { public void paintComponent(Graphics g) { int w = getParent().getWidth(); int h = getParent().getHeight(); for (int i=0;i<h+hinc;i=i+hinc) { for (int j=0;j<w+winc;j=j+winc) { m_image.paintIcon(this,g,j,i); } } } public Dimension getPreferredSize() { return new Dimension(super.getSize()); } public Dimension getMinimumSize() { return getPreferredSize(); } }; getLayeredPane().add(backlabel, new Integer(Integer.MIN_VALUE)); backlabel.setBounds(0,0,5000,5000); setVisible(true); } setDefaultCloseOperation( WindowConstants.DO_NOTHING_ON_CLOSE ); setVisible( true ); txt1.setDocument ( FirstFourDigitDocument ); txt2.setDocument ( SecondFourDigitDocument ); txt5.setDocument ( EightDigitDocument ); passwordField.setDocument ( SixDigitDocument ); txt3.setDocument ( TwentyDigitDocument ); txt4.setDocument ( SecondTwentyDigitDocument ); } class IntegerDocument1 extends PlainDocument { public void insertString(int offset, String str, AttributeSet a) throws BadLocationException { char[] insertChars = str.toCharArray(); boolean valid = true; boolean fit = true; if (insertChars.length + getLength() <= 4) { for (int i = 0; i < insertChars.length; i++) { if (!Character.isDigit(insertChars[i])) { valid = false; break; } } } else fit = false; if (fit && valid) super.insertString(offset, str, a); else if (!fit) getToolkit().beep(); } } class IntegerDocument2 extends PlainDocument { public void insertString(int offset, String str, AttributeSet a) throws BadLocationException { char[] insertChars = str.toCharArray(); boolean valid = true; boolean fit = true; if (insertChars.length + getLength() <= 6) { for (int i = 0; i < insertChars.length; i++) { if (Character.isDigit(insertChars[i])) { valid = false; break; } } } else fit = false; if (fit && valid) super.insertString(offset, str, a); else if (!fit) getToolkit().beep(); } } class IntegerDocument3 extends PlainDocument { public void insertString(int offset, String str, AttributeSet a) throws BadLocationException { char[] insertChars = str.toCharArray(); boolean valid = true; boolean fit = true; if (insertChars.length + getLength() <= 4) { for (int i = 0; i < insertChars.length; i++) { if (!Character.isDigit(insertChars[i])) { valid = false; break; } } } else fit = false; if (fit && valid) super.insertString(offset, str, a); else if (!fit) getToolkit().beep(); } } class IntegerDocument4 extends PlainDocument { public void insertString(int offset, String str, AttributeSet a) throws BadLocationException { char[] insertChars = str.toCharArray(); boolean valid = true; boolean fit = true; if (insertChars.length + getLength() <= 8) { for (int i = 0; i < insertChars.length; i++) { if (!Character.isDigit(insertChars[i])) { valid = false; break; } } } else fit = false; if (fit && valid) super.insertString(offset, str, a); else if (!fit) getToolkit().beep(); } } class IntegerDocument5 extends PlainDocument { public void insertString(int offset, String str, AttributeSet a) throws BadLocationException { char[] insertChars = str.toCharArray(); boolean valid = true; boolean fit = true; if (insertChars.length + getLength() <= 20) { for (int i = 0; i < insertChars.length; i++) { if (Character.isDigit(insertChars[i])) { valid = false; break; } } } else fit = false; if (fit && valid) super.insertString(offset, str, a); else if (!fit) getToolkit().beep(); } } class IntegerDocument6 extends PlainDocument { public void insertString(int offset, String str, AttributeSet a) throws BadLocationException { char[] insertChars = str.toCharArray(); boolean valid = true; boolean fit = true; if (insertChars.length + getLength() <= 20) { for (int i = 0; i < insertChars.length; i++) { if (Character.isDigit(insertChars[i])) { valid = false; break; } } } else fit = false; if (fit && valid) super.insertString(offset, str, a); else if (!fit) getToolkit().beep(); } } // The following methods are used to listen for events // occurring on the buttons in this layout. public void actionPerformed(ActionEvent e) { Object source = e.getSource(); if (source == clearBtn) { txt3.setText(""); txt4.setText(""); txt5.setText(""); area.setText(""); message.setText("Please enter Employee details"); } if (source == exitBtn) { int confirm = JOptionPane.showOptionDialog (null, " Do you really have to go?", "Exit Confirmation", JOptionPane.YES_NO_OPTION, JOptionPane.QUESTION_MESSAGE, null, null, null); if (confirm == 0) { System.exit(0); } } } class MyItemListener implements ItemListener { // This method is called only if a new item has been selected. public void itemStateChanged(ItemEvent evt) { JComboBox combo3 = (JComboBox)evt.getSource(); // Get the affected item Object item = evt.getItem(); if (evt.getItem() == a) { lbl12.setText( "Commerce" ); } else if (evt.getItem() == b) { lbl12.setText( "Science" ); } else if (evt.getItem() == d) { lbl12.setText( "Engineering" ); } else if (evt.getItem() == e) { lbl12.setText( "Nursing" ); } else if (evt.getItem() == f) { lbl12.setText( "Hospitality" ); } } } }
thanks all.
tom.

sorry marilyn
i think it must of been the way i wrote the code out...it should be on one line...with that solved it still doesnt compile.
any reason why?
and when i use methods instead of classes it still doesnt work?
any idea why?

hi guys..i have this code to count a character within a given source file..why wont it run/(it doesnt seem to compile either)
import java.io.IOException;
class Main
{
public static void main( String args[] )
{
try
{
int count = 0;
int ch = System.in.read();
while ( ch == '/')
{
count++;
ch = System.in.read();
}
System.out.println( "Total number of characters: " + count );
}
catch ( IOException err )
{
System.out.println("Unexpected error on
input");
}
}
}

any help?
also i have this code (below) for calculating the lines in a source code (any random source code) how can i combine both codes (above and below) to produce code that will calculate the amount of logical lines in a source code?
ive asked b4, given it ago, but im stuck at this point..can i get the answer???
thanks guys for your time and effort
cheers
tom

hi,
can i have an example of code where i can see this in context.
ive tried but obviously im missing something
an example would be good
thx guys

thanks michael for your reply...you mention a concrete example but no requirements...well thats pretty much it really..take a java source code, say we parse it, then the java code does the rest..it (i would say) searches the source code and filters out those lines that arent logical and returns the amount of lines that are...
does that help....any possibility for an example code?
cheers michael once again
regards tom