SQLite and PHP - Why doesn't this work?
I've noticed that, with the bundled installs of SQLite3 and PHP, SQLite seems not to work. Checking phpinfo(), I noticed that the linked library is of version 2, but SQLite 2 is not bundled.
I've tirelessly searched the net, but this issue seems largely undocumented. Short of compiling my own version of PHP (I'd rather not), is there any solution to 'upgrade' the SQlite library in PHP?
I wrote a little PHP script to create a SQLite database, load a few records and print them in a web browser. Works fine. From the terminal, the sqlite3 command will open the db but even just trying to list the .databases will produce Error: file is encrypted or is not a database. The PHP script is creating a SQLite2 database. You can open the db in TextWrangler or BBEdit to see the version number. I guess we will have to wait for a version of PHP that is compatible with SQLite3.
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Networking - Why Doesn't This Work?
Hey all
Just wondering if any of you have any ideas why this code isn't working properly - for the Client to connect the Server has to be restarted. Is there a solution to this problem?
The Client Class:
import java.awt.Container;
import java.awt.Color;
import java.awt.Font;
import java.awt.FlowLayout;
import java.awt.Dimension;
import java.awt.GridBagLayout;
import java.awt.GridBagConstraints;
import java.awt.Insets;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JColorChooser;
import javax.swing.ButtonGroup;
import javax.swing.Box;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.BoxLayout;
import javax.swing.JTextArea;
import javax.swing.JTextField;
import javax.swing.JLabel;
import javax.swing.JComboBox;
import javax.swing.JOptionPane;
import javax.swing.JRadioButton;
import java.io.*;
import java.net.*;
* This is the user class and holds all the details for the GUI. The gui contains listeners
* ans it sends messages to the server and also recieves messages from the server. This class
* works primarily with the ClienttoServer class.
* Help was used to create this class, mainly from the Java GUI devlopment book by Varan Piroumian
* as this hsowed the basic components needed to create a GUI and which imports were the most essential
* in order to have an interactive interface for the chat application.
public class Client extends JFrame implements ActionListener
private static final long serialVersionUID = 1L;
private JTextArea conversationDisplay;
private JTextField createMsg, hostfield, portnumfd, usernamey;
private JScrollPane scrolly;
private JLabel hosty, portnum, convoLabel, msgLabel, netwrk, netwrk2, talk2urself, fonts, nickName, ustatus, econs;
private JPanel lpanel, rpanel, lpanel1, lpanel2, lpanel3, lpanel4, lpanel5, rpanel1, rpanel2, rpanel3, rpanel4, rpanel5;
private JButton sendMsgButton, colourButton, exitButton, connect, dropconnection;
private JRadioButton talk2urselfOn, talk2urselfOff;
private JComboBox fontcombiBox, statusbox, emoticons;
private JColorChooser colourchoo;
private Container theWholeApp;
private String username;
private PrintWriter writer;
private Socket socky;
//for the self comm button
private boolean talktoself = true;
//used as when a msg is sent to the server the name & msg are sent in 2 parts (\n function) i.e
//2 different messages. So in self comm mode then the next message needs to be ignored
private boolean ignoreyourself = false;
* The Constructor or the class
public Client()
makeGUI();
System.out.println("Loading the GUI....");
* Creates the GUI for the user to see/use
public void makeGUI()
//create the whole window
JFrame.setDefaultLookAndFeelDecorated(true);
//set the title of the whole app
this.setTitle("Welcome To Elliot's Chat Network...");
//set the app window size
this.setSize(600, 575);
//create the outer container for the app
theWholeApp = getContentPane();
//make new gridbag layout
GridBagLayout layoutgridbag = new GridBagLayout();
//create some restraints for this...
GridBagConstraints gbconstraints = new GridBagConstraints();
//make the app use this gridbag layout
theWholeApp.setLayout(layoutgridbag);
//this is where elements are added into the application's window
//creates and adds the convo label
convoLabel = new JLabel("Your Conversation:");
gbconstraints = new GridBagConstraints();
gbconstraints.gridx = 0;
gbconstraints.gridy = 0;
gbconstraints.gridheight = 1;
gbconstraints.gridwidth = 1;
gbconstraints.weightx = 5;
gbconstraints.weighty = 1;
gbconstraints.anchor = GridBagConstraints.WEST;
layoutgridbag.setConstraints(convoLabel, gbconstraints);
theWholeApp.add(convoLabel);
//create & add the exit button
exitButton = new JButton("Exit");
gbconstraints = new GridBagConstraints();
gbconstraints.gridx = 10;
gbconstraints.gridy = 0;
gbconstraints.gridheight = 1;
gbconstraints.gridwidth = 1;
gbconstraints.weightx = 1;
gbconstraints.weighty = 1;
gbconstraints.anchor = GridBagConstraints.EAST;
layoutgridbag.setConstraints(exitButton, gbconstraints);
theWholeApp.add(exitButton);
exitButton.addActionListener(this);
//create & add the txt area
conversationDisplay = new JTextArea(15,15);
scrolly = new JScrollPane(conversationDisplay);
gbconstraints = new GridBagConstraints();
gbconstraints.gridx = 0;
gbconstraints.gridy = 1;
gbconstraints.gridheight = 4;
gbconstraints.gridwidth = 11;
gbconstraints.weightx = 10;
gbconstraints.weighty = 20;
gbconstraints.anchor = GridBagConstraints.WEST;
gbconstraints.fill = GridBagConstraints.BOTH;
gbconstraints.insets = new Insets(10, 10, 15, 15);
//so the clients cant write in the display area...
conversationDisplay.setEditable(false);
layoutgridbag.setConstraints(scrolly, gbconstraints);
theWholeApp.add(scrolly);
//create & add the nick name area
nickName = new JLabel("Your nick \nthis is required");
gbconstraints = new GridBagConstraints();
gbconstraints.gridx = 0;
gbconstraints.gridy = 5;
gbconstraints.gridheight = 1;
gbconstraints.gridwidth = 1;
gbconstraints.weightx = 5;
gbconstraints.weighty = 1.5;
gbconstraints.anchor = GridBagConstraints.WEST;
gbconstraints.fill = GridBagConstraints.HORIZONTAL;
gbconstraints.insets = new Insets(3, 10, 0, 0);
layoutgridbag.setConstraints(nickName, gbconstraints);
theWholeApp.add(nickName);
//create & add the nick name box
usernamey = new JTextField(10);
gbconstraints = new GridBagConstraints();
gbconstraints.gridx = 0;
gbconstraints.gridy = 6;
gbconstraints.gridheight = 1;
gbconstraints.gridwidth = 1;
gbconstraints.weightx = 1;
gbconstraints.weighty = 1;
gbconstraints.anchor = GridBagConstraints.WEST;
gbconstraints.fill = GridBagConstraints.HORIZONTAL;
gbconstraints.insets = new Insets(0, 10, 0, 0);
layoutgridbag.setConstraints(usernamey, gbconstraints);
theWholeApp.add(usernamey);
//create & add the your message label
msgLabel = new JLabel("Your Message:");
gbconstraints = new GridBagConstraints();
gbconstraints.gridx = 0;
gbconstraints.gridy = 7;
gbconstraints.gridheight = 1;
gbconstraints.gridwidth = 1;
gbconstraints.weightx = 1;
gbconstraints.weighty = 1;
gbconstraints.anchor = GridBagConstraints.WEST;
gbconstraints.fill = GridBagConstraints.BOTH;
gbconstraints.insets = new Insets(0, 10, 0, 0);
layoutgridbag.setConstraints(msgLabel, gbconstraints);
theWholeApp.add(msgLabel);
//create & add the create message box
createMsg = new JTextField(15);
gbconstraints = new GridBagConstraints();
gbconstraints.gridx = 0;
gbconstraints.gridy = 8;
gbconstraints.gridheight = 2;
gbconstraints.gridwidth = 10;
gbconstraints.weightx = 10;
gbconstraints.weighty = 1;
gbconstraints.anchor = GridBagConstraints.WEST;
gbconstraints.fill = GridBagConstraints.HORIZONTAL;
gbconstraints.insets = new Insets(3, 10, 0, 0);
layoutgridbag.setConstraints(createMsg, gbconstraints);
theWholeApp.add(createMsg);
createMsg.addActionListener(this);
createMsg.setActionCommand("Press Enter!");
//create & add the send message button
sendMsgButton = new JButton("Send Msg");
gbconstraints = new GridBagConstraints();
gbconstraints.gridx = 10;
gbconstraints.gridy = 8;
gbconstraints.gridheight = 1;
gbconstraints.gridwidth = 1;
gbconstraints.weightx = 1;
gbconstraints.weighty = 1;
gbconstraints.anchor = GridBagConstraints.EAST;
layoutgridbag.setConstraints(sendMsgButton, gbconstraints);
theWholeApp.add(sendMsgButton);
sendMsgButton.addActionListener(this);
//create & add the left panel
lpanel = new JPanel();
gbconstraints = new GridBagConstraints();
gbconstraints.gridx = 0;
gbconstraints.gridy = 10;
gbconstraints.gridheight = 3;
gbconstraints.gridwidth = 4;
gbconstraints.weightx = 5;
gbconstraints.weighty = 0;
gbconstraints.anchor = GridBagConstraints.WEST;
gbconstraints.insets = new Insets(0, 10, 0, 0);
layoutgridbag.setConstraints(lpanel, gbconstraints);
theWholeApp.add(lpanel);
//create & add the right panel
rpanel = new JPanel();
gbconstraints = new GridBagConstraints();
gbconstraints.gridx = 5;
gbconstraints.gridy = 10;
gbconstraints.gridheight = 3;
gbconstraints.gridwidth = 4;
gbconstraints.weightx = 5;
gbconstraints.weighty = 0;
gbconstraints.anchor = GridBagConstraints.EAST;
layoutgridbag.setConstraints(rpanel, gbconstraints);
theWholeApp.add(rpanel);
//add to the left JPanel - set the layout for this
lpanel.setLayout(new BoxLayout(lpanel, BoxLayout.Y_AXIS));
//add panels into this left panel...
lpanel1 = new JPanel();
lpanel2 = new JPanel();
lpanel3 = new JPanel();
lpanel4 = new JPanel();
lpanel5 = new JPanel();
lpanel.add(lpanel1);
lpanel.add(lpanel2);
lpanel.add(lpanel3);
lpanel.add(lpanel4);
lpanel.add(lpanel5);
//set FlowLyout for each of these panels
lpanel1.setLayout(new FlowLayout(FlowLayout.LEFT));
lpanel2.setLayout(new FlowLayout(FlowLayout.LEFT));
lpanel3.setLayout(new FlowLayout(FlowLayout.LEFT));
lpanel4.setLayout(new FlowLayout(FlowLayout.LEFT));
lpanel5.setLayout(new FlowLayout(FlowLayout.LEFT));
//add in the network items...
netwrk = new JLabel("Network Details:");
lpanel1.add(netwrk);
//create and add instructions for this
netwrk2 = new JLabel("Please enter the details for \nthe person you want to chat to...");
lpanel2.add(netwrk2);
//create/add the ip addy label
hosty = new JLabel("Host:");
lpanel3.add(hosty);
lpanel3.add(Box.createRigidArea(new Dimension(5,0)));
hostfield = new JTextField("Enter Hostname",10);
lpanel3.add(hostfield);
//port num next
portnum = new JLabel("Port Number:");
lpanel4.add(portnum);
lpanel4.add(Box.createRigidArea(new Dimension(5, 0)));
portnumfd = new JTextField("2250", 10);
lpanel4.add(portnumfd);
//create & add the connect butt
connect = new JButton("Connect");
lpanel5.add(connect);
dropconnection = new JButton("Disconnect");
lpanel5.add(dropconnection);
connect.addActionListener(this);
dropconnection.addActionListener(this);
//start the creation of the right hand panel.
rpanel.setLayout(new BoxLayout(rpanel, BoxLayout.Y_AXIS));
//create the panels again
rpanel1 = new JPanel();
rpanel2 = new JPanel();
rpanel3 = new JPanel();
rpanel4 = new JPanel();
rpanel5 = new JPanel();
rpanel.add(rpanel1);
rpanel.add(rpanel2);
rpanel.add(rpanel3);
rpanel.add(rpanel4);
rpanel.add(rpanel5);
rpanel1.setLayout(new FlowLayout(FlowLayout.LEFT));
rpanel2.setLayout(new FlowLayout(FlowLayout.LEFT));
rpanel3.setLayout(new FlowLayout(FlowLayout.LEFT));
rpanel4.setLayout(new FlowLayout(FlowLayout.LEFT));
rpanel5.setLayout(new FlowLayout(FlowLayout.LEFT));
//now start putting things into them again
//add in the font settings
String[] fonty = {"Normal", "Bold", "Italic"};
fonts = new JLabel("Set your text style:");
fontcombiBox = new JComboBox(fonty);
rpanel2.add(fonts);
rpanel2.add(Box.createRigidArea(new Dimension(4,0)));
rpanel2.add(fontcombiBox);
//default text will be plain..
fontcombiBox.setSelectedIndex(0);
String[] userstatus = {"Online", "Away", "Be Right Back", "Busy", "Out To Lunch", "On The Phone"};
ustatus = new JLabel("Select a status:");
statusbox = new JComboBox(userstatus);
rpanel2.add(ustatus);
rpanel2.add(Box.createRigidArea(new Dimension(2,0)));
rpanel2.add(statusbox);
//add in some emotion to the conversations
String[] emotion = {"Angry", "Happy", "Sad", "Crying", "Shocked", "Laughing", "Laughing My Ass Off!"};
econs = new JLabel("Select an emoticon:");
emoticons = new JComboBox(emotion);
rpanel3.add(econs);
rpanel3.add(Box.createRigidArea(new Dimension(3,0)));
rpanel3.add(emoticons);
//self comm options
talk2urself = new JLabel("Set Self Communication Mode:");
rpanel4.add(talk2urself);
talk2urselfOn = new JRadioButton("On", true);
rpanel4.add(talk2urselfOn);
rpanel4.add(Box.createRigidArea(new Dimension(4, 0)));
talk2urselfOff = new JRadioButton("Off", false);
rpanel4.add(talk2urselfOff);
//create a group that will hold both these buttons together
ButtonGroup groupy = new ButtonGroup();
//add them to the group
groupy.add(talk2urselfOn);
groupy.add(talk2urselfOff);
//create and add the change backgrd button
colourButton = new JButton("Alter Background");
rpanel5.add(colourButton);
//add in some listeners
talk2urselfOn.addActionListener(this);
talk2urselfOff.addActionListener(this);
fontcombiBox.addActionListener(this);
colourButton.addActionListener(this);
statusbox.addActionListener(this);
//add in the 'X' button in the top right corner of app
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
//put all elements together
this.pack();
//show the GUI for the user..
this.show();
* Creates a new client and GUI as its the main method
public static void main(String args[])
new Client();
* This method listens for actions selected by the user and then performs the
* necessary tasks in order for the correct events to take place...!
* This method was mainly created thanks to the Developing Java GUI book which has already
* been mentioned as it covers listeners and event handling...
public void actionPerformed(ActionEvent event)
//if the send button is clicked or if hard carriage return after message
if((event.getSource() == (sendMsgButton)) || (event.getSource().equals(createMsg)))
//if theres no text dont send message
if(createMsg.getText().equals(""))
JOptionPane.showMessageDialog(this, "There's no text to send!");
else
String str = createMsg.getText();
printMessage(str);
//if the exit button is clicked
if(event.getSource() == (exitButton))
//quit the chat app
JOptionPane.showMessageDialog(this, "Thanks For Using Elliot's Chat Network! \nSee You Again Soon!");
System.exit(0);
//if the self comm option is turned on
if(event.getSource() == (talk2urselfOn))
talktoself = true;
JOptionPane.showMessageDialog(this, "You have begun self communication \nmessages you send are now displayed");
//if the self comm option is turned off
if(event.getSource() == (talk2urselfOff))
talktoself = false;
JOptionPane.showMessageDialog(this, "You have stopped self communication \nmessages you send are no longer displayed");
//for the normal font option
if(fontcombiBox.getSelectedItem().equals("Plain"))
//makes a new font style plain...
conversationDisplay.setFont(new Font("simple", Font.PLAIN, 12));
createMsg.setFont(new Font("simple", Font.PLAIN, 12));
//for the bold font option
if(fontcombiBox.getSelectedItem().equals("Bold"))
conversationDisplay.setFont(new Font("simple", Font.BOLD, 12));
createMsg.setFont(new Font("simple", Font.BOLD, 12));
//for the italic font option
if(fontcombiBox.getSelectedItem().equals("Italic"))
conversationDisplay.setFont(new Font("simple", Font.ITALIC, 12));
createMsg.setFont(new Font("simple", Font.ITALIC, 12));
* //the status events if they didnt create null points...
if(statusbox.getSelectedItem().equals("Online"))
String status = "<Online>";
printMessage(status);
if(statusbox.getSelectedItem().equals("Away"))
String status = "<Away>";
printMessage(status);
if(statusbox.getSelectedItem().equals("Be Right Back"))
String status = "<Be Right Back>";
printMessage(status);
if(statusbox.getSelectedItem().equals("Busy"))
String status = "<Busy>";
printMessage(status);
if(statusbox.getSelectedItem().equals("Out To Lunch"))
String status = "<Out To Lunch>";
printMessage(status);
if(statusbox.getSelectedItem().equals("On The Phone"))
String status = "<On The Phone>";
printMessage(status);
//the emoticons events...
if(emoticons.getSelectedItem().equals("Angry"))
String status = "<Angry>";
printMessage(status);
if(emoticons.getSelectedItem().equals("Sad"))
String status = "<Sad>";
printMessage(status);
if(emoticons.getSelectedItem().equals("Shocked"))
String status = "<Shocked>";
printMessage(status);
if(emoticons.getSelectedItem().equals("Happy"))
String status = "<Happy>";
printMessage(status);
if(emoticons.getSelectedItem().equals("Crying"))
String status = "<Crying>";
printMessage(status);
if(emoticons.getSelectedItem().equals("Laughing"))
String status = "<Laughing>";
printMessage(status);
if(emoticons.getSelectedItem().equals("Laughing My Ass Off!"))
String status = "<Laughing My Ass Off!>";
printMessage(status);
//if the colour button is clicked
if(event.getSource() == colourButton)
//create a new colour chooser
colourchoo = new JColorChooser();
//create the dialog its shown in
JColorChooser.createDialog(colourButton, "Choose your background colour", true, colourchoo, this, this);
//now show the dialog
Color col = JColorChooser.showDialog(sendMsgButton, "Choose your background colour", Color.GRAY);
//when a colour is chosen it becomes the bg colour
theWholeApp.setBackground(col);
rpanel1.setBackground(col);
rpanel2.setBackground(col);
rpanel3.setBackground(col);
rpanel4.setBackground(col);
rpanel5.setBackground(col);
lpanel1.setBackground(col);
lpanel2.setBackground(col);
lpanel3.setBackground(col);
lpanel4.setBackground(col);
lpanel5.setBackground(col);
//if the connect button is clicked
if(event.getSource() == (connect))
//get the txt entered into ip addy field & port num fields with a text check...
if(hosty.getText().equals("") || portnumfd.getText().equals("") || nickName.getText().equals(""))
JOptionPane.showMessageDialog(this, "You cant connect! \nThis is because the either the \n0 - HostName\n 0 - Port Number \n0 - Your Nick \nIs Missing...");
else
//get details and connect
username = nickName.getText();
String ipay = hostfield.getText();
String porty = portnumfd.getText();
connectto(ipay,porty);
* This method is similar to an append method in that it allows msgs recieved by the server to
* be displayed in the conversation window. It also deals with the self comm mode as if its disabled
* then no messages from the sender will be displayed.
public void moveTextToConvo(String texty)
//check
if(ignoreyourself == true)
ignoreyourself = false;
else
//If self comm is on the send message as normal
if(talktoself)
conversationDisplay.setText(conversationDisplay.getText() + texty);
else
//check message isnt sent by the current client - if it is ignore it!
if(texty.startsWith(nickName.getText()))
ignoreyourself = true;
else
conversationDisplay.setText(conversationDisplay.getText() + texty);
//allows the scroll pane to move automatically with the conversation
conversationDisplay.setCaretPosition(conversationDisplay.getText().length());
* This method (connectto) is called if the button's clicked and also sets up a relation
* between the client and clienttoserver class
public void connectto(String ipa,String portNO)
//portNO needs to be changed from string to int
int portNum = new Integer(portNO).intValue();
try
//creates a socket
socky = new Socket(ipa, portNum);
writer = new PrintWriter(socky.getOutputStream(), true);
ClienttoServer cts = new ClienttoServer(socky, this);
cts.runit();
//give user a prompt
JOptionPane.showMessageDialog(this, "You're now connected!");
catch(UnknownHostException e)
System.err.println("Unknown host...");
//prompt the user
JOptionPane.showMessageDialog(this, "Failed to connect! \nPlease try again...");
catch(IOException e)
System.err.println("Could Not Connect!");
//prompt user
JOptionPane.showMessageDialog(this, "Error! \nCould not connect - please try again!");
* This method sends msgs from current client to server, sends username and then the message.
* This is split into two different messages as the "\n" is used.
public void printMessage(String mess)
writer.println(usernamey.getText() + " says: \n" + mess);
//then clear the text in the message creation area...
createMsg.setText("");
* Accessor method to retrieve userName
public String getUName()
return username;
* Disconnect this user from the server so that they can no longer recieve/send messages
public void dropconnection()
try
//Start to close everything - informing user
writer.close();
socky.close();
//Give the user info on whats happening
JOptionPane.showMessageDialog(this, "You are now disconnected \nYou will no longer be able to \nsend and recieve messages");
System.out.println("A user has left the conversation...");
catch (IOException e)
System.err.println("IOException " + e);
The Server Class:
import java.net.*;
import java.io.*;
* This class works in sync with the ServertoClient class in order to read
* messages from clients and then send back out to all the active clients. Due to
* the usage of threading multiple clients can use this server.
* Once again some of this code is from Florians 2005 tutorial work.
public class Server
private ServerSocket server;
private ServertoClient threads[];
private static int portNo = 2250;
private static String Host = ""; //find method to retrieve ip
private int maxPeeps = 20; //20 people can talk together but this can be altered
* 1st Constructor - has no params
public Server()
* 2nd Constructor - allows for port number setting
public Server(int portnumber)
portNo = portnumber;
* 3rd Constructor - allows for port number & max users
public Server(int portnumber, int maxiusers)
portNo = portnumber;
maxPeeps = maxiusers;
* This method is to constantly listen for possible messages from clients
public void listener()
//set the time out of method to just under a minute
final int waitingTime = 500000000;
//a boolean variable to keep it waiting
boolean keepWait = true;
//create a threads array of length maxpeeps
threads = new ServertoClient[maxPeeps];
//define a variable that will be used as a count of the no of threads
int x = 0;
try
//open a new socket on this port number
server = new ServerSocket(portNo);
catch (IOException e)
System.err.println("IOException " + e);
return;
//while the keepWait is true and the no. of threads is less than the max...
while(keepWait && x < maxPeeps)
try
//set the timeout, this is the waitingTime (50 secs)
server.setSoTimeout(waitingTime);
//listen for connection to accept
Socket socky = server.accept();
System.out.println("A New User Has Connected");
//creates a new thread and adds it to array
threads[x] = new ServertoClient(this, socky);
//the thread begins
threads[x].start();
catch (InterruptedIOException e)
System.err.println("The Connection Timed Out...");
keepWait = false;
catch (IOException e)
System.err.println("IOException " + e);
x++; //increment no. of threads
//if waitingTime is reached or there are too many threads then server closes
try
server.close();
catch(IOException e)
System.err.println("IOException " + e);
return;
* This prints the string to all active threads
public void printAll(String printy)
for(int x = 0; x < threads.length; x++)
if(threads[x] !=null && threads[x].isAlive())
threads[x].sendMsg(printy);
* Main method for the server, creates a new server and then continues to listen
* for messages from different users
public static void main(String[] args)
Server chatsession = new Server();
System.out.println("The Server Is Now Running on port NO: " + portNo);
System.out.println("And IP Address: " + Host);
chatsession.listener();
[/code
The ServertoClient Classimport java.lang.Thread;
import java.net.*;
import java.io.*;
* This is the ClienttoServer class that acts as an intermediary between the server
public class ClienttoServer extends Thread
private Socket socky;
private BufferedReader bready;
private boolean active;
private Client client;
* This is the constructor to create a new client service
public ClienttoServer(Socket socket, Client cli)
socky = socket;
active = false;
client = cli;
//try to read from the client
try
bready = new BufferedReader(new InputStreamReader(socky.getInputStream()));
catch (IOException e)
System.err.println("IOException " + e);
* This method reads in from the client
public void runit()
active = true;
while(active == true)
{//continue to read in and then change the text in the conversation window
try
String message = bready.readLine();
client.moveTextToConvo(message + "\n");
catch (IOException e)
System.err.println("IOException " + e);
active = false;
And finaly the servertoclient class
import java.net.*;
import java.io.*;
import java.lang.Thread;
* This clas provides the services that the server uses
public class ServertoClient extends Thread
private Socket socky;
private Server server;
private BufferedReader bready;
private PrintWriter writer;
* This constructor sets up the socket
public ServertoClient(Server theServer, Socket theSocket)throws IOException
socky = theSocket;
server = theServer;
//sets up the i/o streams
writer = new PrintWriter(socky.getOutputStream(), true);
bready = new BufferedReader(new InputStreamReader(socky.getInputStream()));
* This method keeps listening until user disconnects
public void run()
boolean keepRunning = true;
try
//keep listening 'til user disconnects
while(keepRunning = true)
final String tempmsg = bready.readLine();
//is there a message (if yes then print it!)
if(tempmsg == null)
else
server.printAll(tempmsg);
dropconnection();
catch (IOException e)
System.err.println("IOException in thread " + Thread.currentThread() + ": " + e);
* This method is for when a user disconnects from the server...
public void dropconnection()
try
bready.close();
writer.close();
socky.close();
catch (IOException e)
System.err.println("IOException in thread " + Thread.currentThread() + ": " + e);
System.out.println("A User Has Disconnected...");
* This method prints the message
public void sendMsg(String msg)
writer.println(msg);
}Thats it any help would be much appreciated
Cheers.Like the previous poster indicated: try to find a minimal example that shows the error your experiencing.
One thing that seems bogus is the Server.listener() method. For one thing, it can increment x even if no new connection has been established (e.g., x will be incremented if an exception is caught). -
Again... photos into imovie... why doesn't this work at all???!!!
alright.
made it a couple times. no problem. but for right now either i have a problem with my mac or here are some nervewrecking coincidences going on to make my life just that more complicated:
as in every youtube-tutorial about how to get pictures into imovie and in lots of macusers logic to get a photo into imovie you do this with the function of the mediacenter at the center-right. so you go there click on the iphoto and to fast forward everything go for the searchbar and look for the photo you want, drag it to the upper left side or if you changed setting bottom left side and then, what comes next... yep... right... you drop it.... well yeah, if there would be the possibility => i got no possibility to drop my pictures.
however, this is no problem for me with my videos, with my audio but for some random reason photos are unpossible for me to drag there.
somebody an advice? something with the setting? it's normal jpeg, it's imovie from the year 2009 which is version 8alright, you guys, forget about what i just said... i know why it's not working, it is a file that is not as a quadratic picture but one that is just cut out of a quadratic picture. so it's probably that's why it is not working....
so let's take this thing to a different level:
how can i get things that i cut out from editors like gimp and made a jpeg file out of it get into imovie when they are not quadratic?
My idea is to make a video and add in the foreground some little pictures. something like a logo that i can't make with the writing software of imovie. So hoy can i add such a thing or is it even possible? -
I am writting an application to diaplay the lyrics of a song. I need to use 2 switch sturctures.( one switch print day the other verse of tweleve days of christmas)
I can not use arrays or myMethod concept.
This is what I have
import javax.swing.JOptionPane;
import javax.swing.JTextArea;
import javax.swing.JScrollPane;
public class Exercise526
public static void main(String args[] )
JTextArea outputTextArea = new JTextArea( 18,30 );
JScrollPane scroller = new JScrollPane(outputTextArea);
String outputDay = "",
outputVerse = "";
for (int day=0; day >= 12; day++ )
switch (day)
case 1:
outputDay = ("1st"); break;
case 2:
outputDay =("2nd"); break;
case 3:
outputDay = ("3rd"); break;
case 4:
outputDay = ("4th"); break;
case 5:
outputDay = ("5th"); break;
case 6:
outputDay = ("6th"); break;
case 7:
outputDay = ("7th"); break;
case 8:
outputDay = ("8th"); break;
case 9:
outputDay = ("9th"); break;
case 10:
outputDay = ("10th"); break;
case 11:
outputDay = ("11th"); break;
case 12:
outputDay = ("12th"); break;
for ( int words=0; words >= 12; words++ )
switch (words)
case 12:
outputVerse = "Tweleve lords a-leaping\n";
case 11:
outputVerse = "Eleven ladies dancing/n";
case 10:
outputVerse = "Ten pipers piping\n";
case 9:
outputVerse = "Nine drummers drumming\n";
case 8:
outputVerse = "Eight maids a-milking\n";
case 7:
outputVerse = "Seven swans swimming\n";
case 6:
outputVerse = "Six geese a-laying\n";
case 5:
outputVerse = "Five golden rings\n";
case 4:
outputVerse = "Four colly birds\n";
case 3:
outputVerse = "Three french hens\n";
case 2:
outputVerse = "Two turtle doves and\n";
case 1:
outputVerse = "A partridge in a pear tree\n";
outputTextArea.setText(outputDay);
outputTextArea.setText(outputVerse);
outputTextArea.append("\tThe Tweleve Days of Christmas\n");
outputTextArea.append("\nOn the"+outputDay+"day of Christmas my true love gave to me"+ outputVerse);
outputTextArea.append("\n\tProgrammed by: Carly Murphey");
JOptionPane.showMessageDialog( null, outputTextArea,
"The Tweleve Days of Christmas",
JOptionPane.PLAIN_MESSAGE );
System.exit(0);
I can not figure out how to diaplay in JTextarea what the switch data is. Please help. This is due real soon.
Carly// Also remember to put "break;" after each case;otherwise they all mush together
Actually, mushing together is the whole point of the
exercise here. You want to print "12 lords... 11
ladies..." and so on. This is the first situation I
have ever seen where you would actually NOT want the
breaks in your switch statement!Look at the code again. The "12 lords... 11 ladies" part sets a variable rather than printing. Therefore, you do need the breaks.
If the assignments were changed to prints, then you could remove the loop and the breaks. However, this program would be much simpler with arrays instead of switch statements. Maybe that's the next exercise... -
Erratic file naming. Why doesn't this work?
The Finder allows certain names for files and folders sometimes, but then doesn't allow them at other times. What's happenig? Here's an example. I created a folder with this name: "National Geog> Africa (4 parts, 1hr each)" with no problem. Later I wanted to change the "4" to a "6". Sounds simple enough. I highlighted the 4 and typed the 6—but the Finder rejected that simple change, with this message: The [new name] cannot be used. Try using another name, with fewer characters or no punctuation marks."
Why would it like the name with a 4 in it, but not like the name with a 6 instead of the 4?
I can provide this much a clue. The folder resides on an external LaCie hard disk. I don't recall how that particular folder got there, but I have discovered I can create a folder with the desired name on my desktop and then successfully copy it to my external disk with no problem. But I cannot create the folder on the external disk in give it the desired name (I get the error message), nor can I change an existing folder name on the external disk to that name.
This is not the world's worst problem, but if anyone has any comments about this, I'd appreciate them.Strange...when I create a folder on my desktop with that exact name I can change the 4 to a 6 perfectly fine. Are you able to change the name to other things?
Are you able to create new files on the disk, or are you only able to copy files to it via the finder? -
I'm trying to combine 4 of the same image into a 4x4 tile. For some reason when I call drawImage() it only paints 1 of the tiles. I've found that if i move the 1 image at all, the rest is off-screen. The image itself is 34x34 pixels and the panel I'm trying to draw it on is at least 10 times larger. Here is a snip-it of my code if anyone could please look over it and give me any advice or tell me what I'm doing wrong I'd greatly appreciate it.
public void paint(Graphics g) {
int size = 34;
int grassx, grassy;
grassx = size * 7;
grassy = size * 0;
int spritex, spritey;
spritex = sprite.intFromDouble(spriteDimensions.getWidth());
spritey = sprite.intFromDouble(spriteDimensions.getHeight());
g.drawImage(img,0,0,size,size,grassx,grassy,grassx + size,grassy + size,
null);
g.drawImage(img,size,0,size,size,grassx,grassy,grassx + size,grassy +
size,null);
g.drawImage(img,0,size,size,size,grassx,grassy,grassx + size,grassy + size,null);
g.drawImage(img,size,size,size,size,grassx,grassy,grassx + size,grassy + size,null);
g.drawImage(sprite.getCharacters(),0,0,size,size,spritex,spritey, spritex+size,spritey + size,null);
}img is an Image created by ImageIO.read(new File(location.toURI()))The code only visibly draws the image at 0,0 and the sprite that is also located at 0,0.
Any help anyone can give me would be very appreciated.& i also look at your fifth till eighth parameter.
they are same... you can simplify your code by creating sub image first, instead of croping them each time you need them.
fortunately, u are using BufferedImage that already support subimage.
BufferedImage img = ImageIO.read(new File(location.toURI()));
Image cropedImg = img.subImage(grassx, grassy, size, size); // here, 3rd & 4th are width & height.
g.drawImage(cropedImg, 0, 0, this); // lot simpler...
g.drawImage(cropedImg, 0, size, this);
g.drawImage(cropedImg, size, 0, this);
g.drawImage(cropedImg, size, size, this); -
Why doesn't this update work? Can't I sum up two select count(*) in such a subquery?
Thanks
update sales T
set T.field2 = ((select count(*)
from sales t
where t.field1 = trunc(sysdate)) + (select count((*)
from sales t2
where t2.field2 is null));
I get
ERROR at line 4:
ORA-00907: missing right parenthesis
with the * under the +
In other words I want to run
update sales set field = ((select count(*) ..... ) + (select count(*) ..... ))
Edited by: Mark1970 on 26-mar-2010 1.37
Edited by: Mark1970 on 26-mar-2010 1.38My problem is to undestand why I got a syntax error about parenthesis.Because you cannot perform arithmatic operation with a value coming from a subquery in a SET clause of UPDATE
SQL> update emp
2 set sal=(select 1 from dual)+1;
set sal=(select 1 from dual)+1
ERROR at line 2:
ORA-00933: SQL command not properly ended
SQL> select sal from emp
2 where deptno=(select 10 from dual)+10;
SAL
800
2975
3000
1100
3000
SQL> select deptno,sal from emp
2 where deptno=(select 10 from dual)+10;
DEPTNO SAL
20 800
20 2975
20 3000
20 1100
20 3000Try such few examples..
Twinkle -
Iphone 3g - why doesn't it work?
I purchased a new pair of Nike running shoes excited to link up the sensor and get started using with my iphone 3G. However, I find out the Nike Plus only works with an iphone 3GS. I'm now going to have to return the Nike Sensor for a refund instead of having to upgrade to another Iphone model. Is there anyway around this? Why doesn't it work with the Iphone 3G? What makes the operating system in the 3GS different so it works?
As evidence too there is a hack which gets it working as well:
http://mymojo.ca/index.php/2009/12/31/weekend-project-nike-and-iphone-3g-part-1/ -
I recently bought a lightning to 30 pin adapter for my new iPad so that I could continue to use my 30 pin to VGA cord, but when I plug the VGA cord into it it says it is not supported. They are all apple products, so why doesn't it work?
If it is a lightning to 30 pin adaptor, and you have a 7th Generation Nano it has to fit the Nano.
This is lightning to 30 pin adapter: http://www.bestbuy.com/site/Apple%26%23174%3B---Lightning-to-30-Pin-Adapter/6651 936.p?id=1218803450821&skuId=6651936#tab=overview
Is this what you bought?
You need to contact Sony and see if they model you have is compatible with the docking adapter. It may not be. -
I've got a serial number for Contribute but it won't activate on one of our computers. Right now we have to use the 30 day trial. Why doesn't it work? Marianne Stanton, The Inquirer and Mirror, Nantucket, MA: Sign in: [email protected]
Here's the serial number I have and have used on other machines:
< Removed by Moderator >
"This serial number is not valid for this product."
OS 10.7.5
Contribute 6.5
Greg Derr
<Removed by Moderator> -
Functions in a For Loop defining objects from an Array. . .Why Won't This Work?!
I'm trying to put these functions into a Loop to conserve
space. Why won't this work?
.Yeah, sly one is right. You can not have the "i" inside the
onRollOver function, what you have to do is: As the movieClip class
is dynamic you can create a property of the movieClip which stores
the value if the "i". And then, inside the onRollOver function, you
have to make reference to that property.
for (i=0; i<2; i++) {
this.regArray
.iterator = i;
this.regArray.onRollOver = function () {
showRegion(regArray[this.iterator]);
this.regArray
.onRollOut = function () {
hideRegion(regArray[this.iterator]); -
Why doesn't LightScribe work with my Snow Leopard?
Why doesn't LightScribe work with my Snow Leopard? It downloaded and is in my printer folder, but won't open.
Are you really still running 10.6.3? If you are you should run the combo update as many issues were resolved within the updates themselves.
Mac OS X 10.6.8 Update Combo v1.1 -
Why doesn't flash work during panorama pictures
why doesn't flash work during panorama pictures
HI..
Try troubleshooting the Flash plugin ..
Quit Safari.
Open System Preferences > Flash Player then select the Storage tab. Click: Delete All
Now uninstall the Flash plugin then reinstall new > Troubleshoot Flash Player | Mac OS
Very important to uninstall the currently installed Flash plugin before reinstalling.
Launch Safari From your Safari menu bar click Safari > Empty Cache
Now try a video.
BTW... if you have the ClickToFlash extension installed, that can prevent Flash based video from streaming. It can also be installed as a plugin in /Library/Internet-Plug-Ins.
And check to see if Safari is running in 32 bit mode. Right or control click the Safari icon in your Applications folder then click Get Info. If the box next to: Open in 32 bit mode is selected, deselect, quit then relaunch Safari. -
Suddenly, I cannot sync my Boselink with iPhone. Iphone 4s says Bose sound...not connected. I JUST updated software to iOS 6.1.3. Why isn't this working? I can not play pandora on my Bose.
They are absolutely now paired after doing all you said, as I reset both the Bose Link and the Iphone. Now we have a pair, but no sound on the speaker or the iphone when they are connected. I know they are connected b/c the iphone says they are in the blue tooth setting AND the Bose has a solid blue tooth light on.
Now what? This is beyond frustrating and only happened when I UPDATED ios!
Thank you! -
Why doesn't this i phone (5c) give me automatic audible notice of an e mail ? audible
Why doesn't this i phone (5c( give me automatic audible notice of an email ?
Michele,
Launch Settings / Notifications Center. There you can alter how the system notifies you. Then scroll down to Mail and adjust its specific notification type.
Also make sure that the Alert sound is turned up in the Sounds portion of Settings.
-Alan
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