Pls help.. Java Expert

1)how do i increase the value of month??
example : 21-3-03 translate to 21-3-03
2)how do i update this value to my database by sql statement??
yup.. thanks in advance!!!

>
I almost felt like lifting a finger to help, just for
a moment, and then I saw that you haven't thanked or
rewarded anyone who replied to your last 5 questions.
Hit and run questioning, so to speak.Good point: http://forum.java.sun.com/thread.jsp?thread=372885&forum=31&message=1582967

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    <<save as CC.java>>
    import java.awt.*;
    import java.awt.event.*;
    import javax.swing.event.*;
    import javax.swing.JApplet;
    import javax.swing.*;
    import javax.swing.border.*;
    import javax.swing.JOptionPane;
    public class CC extends JApplet implements ActionListener,ItemListener
    JPanel pnlPane = new JPanel();
    JPanel pnlChoise = new JPanel();
    JPanel pnlButton2 = new JPanel();
    JPanel pnlRoomDisplay = new JPanel();
    JPanel pnlRoom = new JPanel();
    JPanel pnlDisplay = new JPanel();
    JPanel pnlClear = new JPanel();
    JButton btnDisplay = new JButton("Display");
    JButton btnBookRoom = new JButton("Book Room");
    JButton btnDelBookRoom = new JButton("Delete Booking");
    JButton btnDelRoom = new JButton("Delete Room");
    JButton btnAddNewRoom = new JButton("Add New Room");
    JButton btnClear = new JButton("Clear");
    JButton btnRoomQuery = new JButton("Room Query");
    Rooms []room = new Rooms[11];
    String[] Days = {"Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday", "Sunday"};
    int [][] book = new int[11][7];
    public int R, D;
    JLabel lblRoomName = new JLabel();
    JLabel lblCapacity = new JLabel();
    JLabel lblInternet = new JLabel();
    JLabel lblVideo = new JLabel();
    JLabel lblStatus = new JLabel();
    JComboBox cDays= new JComboBox(Days);
    JComboBox cRooms = new JComboBox();
    JTextField txtRoomName1 = new JTextField();
    JTextField txtCapacity1 = new JTextField();
    JCheckBox chkInternet = new JCheckBox("Internet Connection");
    JCheckBox chkVideo = new JCheckBox("Video Conferencing");
    JTextArea txtDisplay = new JTextArea("*****Rooms Detail*****" + "\n",12,30);
    public void init()
    pnlPane.add(pnlChoise);
    pnlPane.add(pnlButton2);
    pnlPane.add(pnlRoomDisplay);
    pnlPane.add(pnlRoom);
    pnlPane.add(pnlDisplay);
    pnlPane.add(pnlClear);
    pnlPane.setBorder(new TitledBorder(new BevelBorder(BevelBorder.RAISED),"Room Booking System"));
    setContentPane(pnlPane);
    AddChoisePanel();
    AddButton2Panel();
    AddRoomDisplayPanel();
    AddRoomPanel();
    AddDisplayAreaPanel();
    AddClearPanel();
    public void AddChoisePanel()
    pnlChoise.setLayout(new GridLayout(1,3,5,5));
    room[0]=new Rooms("Barrington","15","No","Yes");
    room[1]=new Rooms("Carlton","25","Yes","No");
    room[2]=new Rooms("Debyshire","35","No","No");
    room[3]=new Rooms("Edwards","30","Yes","Yes");
    room[4]=new Rooms("Farley","70","Yes","No");
    room[5]=new Rooms("Goodwin","80","Yes","Yes");
    room[6]=new Rooms("Harlow","90","No","Yes");
    room[7]=new Rooms("IlFord","85","No","No");
    for (int i=0; i<8; i++)
    cRooms.addItem(room.rName);
    pnlChoise.add(cRooms);
    pnlChoise.add(cDays);
    pnlChoise.add(btnRoomQuery);
    btnRoomQuery.addActionListener(this);
    cRooms.addItemListener(this);
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    pnlButton2.setLayout(new GridLayout(1,2,5,5));
    pnlButton2.add(btnBookRoom);
    pnlButton2.add(btnDelBookRoom);
    btnDelBookRoom.addActionListener(this);
    btnBookRoom.addActionListener(this);
    public void AddRoomDisplayPanel()
    pnlRoomDisplay.setLayout(new GridLayout(6,2,5,2));
    pnlRoomDisplay.add(new JLabel("Room Name" ));
    pnlRoomDisplay.add(lblRoomName);
    pnlRoomDisplay.add(new JLabel("Room Capacity"));
    pnlRoomDisplay.add(lblCapacity);
    pnlRoomDisplay.add(new JLabel("Internet Connection"));
    pnlRoomDisplay.add(lblInternet);
    pnlRoomDisplay.add(new JLabel("Video Conferencing"));
    pnlRoomDisplay.add(lblVideo);
    pnlRoomDisplay.add(new JLabel("Room Status"));
    pnlRoomDisplay.add(lblStatus);
    pnlRoomDisplay.setBorder(new TitledBorder(new BevelBorder(BevelBorder.LOWERED),"Rooms Detail"));
    pnlRoomDisplay.add(btnDelRoom);
    btnDelRoom.addActionListener(this);
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    pnlRoom.setLayout(new GridLayout(6,2,2,2));
    pnlRoom.setBorder(new TitledBorder(new BevelBorder(BevelBorder.LOWERED),"Add New Rooms"));
    pnlRoom.add(new Label("Room Name"));
    pnlRoom.add(txtRoomName1);
    pnlRoom.add(new Label("Capacity"));
    pnlRoom.add(txtCapacity1);
    pnlRoom.add(chkInternet);
    pnlRoom.add(new Label(""));
    pnlRoom.add(chkVideo);
    pnlRoom.add(new Label(""));
    pnlRoom.add(new Label(""));
    pnlRoom.add(new Label(""));
    pnlRoom.add(btnAddNewRoom);
    btnAddNewRoom.addActionListener(this);
    public void AddDisplayAreaPanel()
    pnlDisplay.setLayout(new GridLayout(1,1));
    //pnlDisplay.setBorder(new TitledBorder(new BevelBorder(BevelBorder.LOWERED),"Rooms Detail"));
    Border pnlDisplayBorder = BorderFactory.createTitledBorder("Rooms Detail");
    pnlDisplay.setBorder(pnlDisplayBorder);
    pnlDisplay.add(txtDisplay);
    public void AddClearPanel()
    pnlClear.setLayout(new GridLayout(1,1));
    pnlClear.add(btnClear);
    btnClear.addActionListener(this);
    public void actionPerformed(ActionEvent event)
    //to call RoomQuery function
    if (event.getSource() == btnRoomQuery){
    AddRoomQuery(); }
    else
    //to call DeleteBookRoom function
    if (event.getSource() == btnDelBookRoom){
    AddDeleteBookRoom(); }
    else
         //to call DeleteRoom function
    if (event.getSource() == btnDelRoom){
              AddDeleteRoom(); }     
         else
         //to call AddNewRoom function
         if (event.getSource() == btnAddNewRoom){
                   AddNewRoom(); }
              else
              //to call ClearTextArea function
                   if (event.getSource() == btnClear){
                   AddClearTextArea(); }
              else
                   //to call BookRoom function
                   if (event.getSource() == btnBookRoom){
                        AddBookRoom(); }
    public void AddRoomQuery()
    R= (int) cRooms.getSelectedIndex();
    D = (int) cDays.getSelectedIndex();
    JOptionPane.showMessageDialog(null, R + " " + D);
    txtDisplay.setText(" *************** Room Status For "+ Days[D] + " *************** " + "\n");
    txtDisplay.append("Rooms" + "\t\t " + " Status");
    for (int t=0; t< (int) cRooms.getItemCount(); t++)
    {  JOptionPane.showMessageDialog(null," is" + cRooms.getItemCount());
    if (book[t][D]==0)
    txtDisplay.append("\n" + ">>" + room[t].rName);
    txtDisplay.append("\t\t " + " Room is Available");
    else
         if (book[t][D]==1)
    txtDisplay.append("\n" + ">>" + room[t].rName);
         txtDisplay.append("\t\t " + " Room Booked");
    JOptionPane.showMessageDialog(null, "end " );
    public void AddDeleteBookRoom()
    R = (int) cRooms.getSelectedIndex();
    D = (int) cDays.getSelectedIndex();
    if(book[R][D] == 1)
    txtDisplay.setText("*****Rooms Detail*****" + "\n" + "Room is Available" + "\n");
    book[R][D] = 0;
    else
    txtDisplay.setText("*****Rooms Detail*****" + "\n" + "Room Available"+ "\n");
         book[R][D] = 0;
    public void AddDeleteRoom()
    R = (int) cRooms.getSelectedIndex();
    D = (int) cDays.getSelectedIndex();
    JOptionPane.showMessageDialog(null,"Room selected index " + R);
    int intCount =(int) cRooms.getSelectedIndex();
    if (intCount != -1)
    if(book[R][D] == 0 )
    JOptionPane.showMessageDialog(null,"Room "+room[intCount].rName + " had Deleted");
    cRooms.removeItemAt(intCount);
    int i;
    for( i=intCount;i< cRooms.getItemCount();i++)
    JOptionPane.showMessageDialog(null,"Room "+room[i+1].rName + "to");      
    room[i]=new Rooms(room[i+1]);
    JOptionPane.showMessageDialog(null,"Room "+ room[i].rName );
    //cRooms.getSelectedIndex());
    // intCount--;
    else
    if(book[R][D] == 1 )
    JOptionPane.showMessageDialog(null,"Room "+room[intCount].rName+" Can Not be Delete");
    else
    JOptionPane.showMessageDialog(null,"Select A Room To be Delete ");
    public void AddNewRoom()
    JOptionPane.showMessageDialog(null,"Add new room");
    public void AddClearTextArea()
    txtDisplay.setText("*****Rooms Detail*****" + "\n");
    public void AddBookRoom()
    R= (int) cRooms.getSelectedIndex();
    D = (int) cDays.getSelectedIndex();
    if(book[R][D] == 0)
    txtDisplay.setText("*****Rooms Detail*****" + "\n" + "Room is Booked" + "\n");
    book[R][D] = 1;
    else
    txtDisplay.setText("*****Rooms Detail*****" + "\n" + "Room Not Available"+ "\n");
         book[R][D] = 1;
    public void itemStateChanged(ItemEvent itv)
    if( itv.getSource() == cRooms )
    R = (int) cRooms.getSelectedIndex();
    lblRoomName.setText(room[R].rName);
    lblCapacity.setText(room[R].rCapacity);
    lblInternet.setText(room[R].rInternet);
    lblVideo.setText(room[R].rVideo);
    // lblStatus.setText(room[R].rStatus);
    <<save as Rooms.java>>
    public class Rooms
    String rName;
    String rCapacity;
    String rInternet;
    String rVideo;
    // String rStatus;
    Rooms(String a, String b, String c, String d)//, String e)
    rName = a;
    rCapacity = b;
    rInternet = c;
    rVideo = d;
    // rStatus = e;
    Rooms(Rooms r)
    rName = r.rName;
    rCapacity = r.rCapacity;
    rInternet = r.rInternet;
    rVideo = r.rVideo;
    // rStatus = r.e;
    <<saves as CC.html>>
    <html>
    <body>
    <Applet code = CC.class
    width = 600
         height = 510>
    </Applet>
    </body>
    </html>

    The important thing is to put the related functionality in the class Room and not everywhere in the class CC.
    The types of the data member in the class Room are also very important to reflect exactly what they should store.
    Here I post a new version of your files as example of how we can improve your version. It does not implement all the functionality you will need but it is a first step.
    Serge
    import java.awt.*;
    import java.awt.event.*;
    import javax.swing.event.*;
    import javax.swing.JApplet;
    import javax.swing.*;
    import javax.swing.border.*;
    import javax.swing.JOptionPane;
    import java.util.LinkedList;
    public class CC extends JApplet implements ActionListener, ItemListener {
        JPanel pnlPane = new JPanel();
        JPanel pnlChoise = new JPanel();
        JPanel pnlButton2 = new JPanel();
        JPanel pnlRoomDisplay = new JPanel();
        JPanel pnlRoom = new JPanel();
        JPanel pnlDisplay = new JPanel();
        JPanel pnlClear = new JPanel();
        JButton btnDisplay = new JButton("Display");
        JButton btnBookRoom = new JButton("Book Room");
        JButton btnDelBookRoom = new JButton("Delete Booking");
        JButton btnDelRoom = new JButton("Delete Room");
        JButton btnAddNewRoom = new JButton("Add New Room");
        JButton btnClear = new JButton("Clear");
        JButton btnRoomQuery = new JButton("Room Query");
        LinkedList roomList = new LinkedList();
        String[] Days = {"Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday", "Sunday"};
        public int R, D;
        JLabel lblRoomName = new JLabel();
        JLabel lblCapacity = new JLabel();
        JLabel lblInternet = new JLabel();
        JLabel lblVideo = new JLabel();
        JLabel lblStatus = new JLabel();
        JComboBox cDays = new JComboBox(Days);
        JComboBox cRooms = new JComboBox();
        JTextField txtRoomName1 = new JTextField();
        JTextField txtCapacity1 = new JTextField();
        JCheckBox chkInternet = new JCheckBox("Internet Connection");
        JCheckBox chkVideo = new JCheckBox("Video Conferencing");
        JTextArea txtDisplay = new JTextArea("*****Rooms Detail*****" + "\n", 12, 30);
        public void init() {
            pnlPane.add(pnlChoise);
            pnlPane.add(pnlButton2);
            pnlPane.add(pnlRoomDisplay);
            pnlPane.add(pnlRoom);
            pnlPane.add(pnlDisplay);
            pnlPane.add(pnlClear);
            pnlPane.setBorder(new TitledBorder(new BevelBorder(BevelBorder.RAISED), "Room Booking System"));
            setContentPane(pnlPane);
            AddChoisePanel();
            AddButton2Panel();
            AddRoomDisplayPanel();
            AddRoomPanel();
            AddDisplayAreaPanel();
            AddClearPanel();
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            pnlChoise.setLayout(new GridLayout(1, 3, 5, 5));
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            room[0] = new Room("Barrington", "15", false, true);
            room[1] = new Room("Carlton", "25", true, false);
            room[2] = new Room("Debyshire", "35", false, false);
            room[3] = new Room("Edwards", "30", true, true);
            room[4] = new Room("Farley", "70", true, false);
            room[5] = new Room("Goodwin", "80", true, true);
            room[6] = new Room("Harlow", "90", false, true);
            room[7] = new Room("IlFord", "85", false, false);
            for (int i = 0; i < 8; i++) {
                cRooms.addItem(room.getName());
    roomList.add(room[i]);
    pnlChoise.add(cRooms);
    pnlChoise.add(cDays);
    pnlChoise.add(btnRoomQuery);
    btnRoomQuery.addActionListener(this);
    cRooms.addItemListener(this);
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    pnlButton2.setLayout(new GridLayout(1, 2, 5, 5));
    pnlButton2.add(btnBookRoom);
    pnlButton2.add(btnDelBookRoom);
    btnDelBookRoom.addActionListener(this);
    btnBookRoom.addActionListener(this);
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    pnlRoomDisplay.setLayout(new GridLayout(6, 2, 5, 2));
    pnlRoomDisplay.add(new JLabel("Room Name"));
    pnlRoomDisplay.add(lblRoomName);
    pnlRoomDisplay.add(new JLabel("Room Capacity"));
    pnlRoomDisplay.add(lblCapacity);
    pnlRoomDisplay.add(new JLabel("Internet Connection"));
    pnlRoomDisplay.add(lblInternet);
    pnlRoomDisplay.add(new JLabel("Video Conferencing"));
    pnlRoomDisplay.add(lblVideo);
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    pnlRoomDisplay.add(lblStatus);
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    btnDelRoom.addActionListener(this);
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    pnlRoom.add(new Label(""));
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    btnAddNewRoom.addActionListener(this);
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    btnClear.addActionListener(this);
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    //to call DeleteRoom function
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    AddDeleteRoom();
    } else {
    //to call AddNewRoom function
    if (event.getSource() == btnAddNewRoom) {
    AddNewRoom();
    } else {
    //to call ClearTextArea function
    if (event.getSource() == btnClear) {
    AddClearTextArea();
    } else {
    //to call BookRoom function
    if (event.getSource() == btnBookRoom) {
    AddBookRoom();
    public void AddRoomQuery() {
    R = (int) cRooms.getSelectedIndex();
    D = (int) cDays.getSelectedIndex();
    // JOptionPane.showMessageDialog(null, R + " " + D);
    txtDisplay.setText(" *************** Room Status For " + Days[D] + " *************** " + "\n");
    txtDisplay.append("Rooms" + "\t\t " + " Status");
    Room aRoom = (Room)roomList.get(R);
    for (int t = 0; t < (int) cRooms.getItemCount(); t++) {
    // JOptionPane.showMessageDialog(null, " is" + cRooms.getItemCount());
    aRoom = (Room)roomList.get(t);
    txtDisplay.append("\n" + ">>" + aRoom.getName());
    if (aRoom.isBooked(D)) {
    txtDisplay.append("\t\t " + " Room Booked");
    } else {
    txtDisplay.append("\t\t " + " Room is Available");
    // JOptionPane.showMessageDialog(null, "end ");
    public void AddDeleteBookRoom() {
    R = (int) cRooms.getSelectedIndex();
    D = (int) cDays.getSelectedIndex();
    Room aRoom = (Room)roomList.get(R);
    aRoom.checkOut(D);
    txtDisplay.setText("*****Rooms Detail*****" + "\n" + "Room is Available" + "\n");
    public void AddDeleteRoom() {
    R = (int) cRooms.getSelectedIndex();
    D = (int) cDays.getSelectedIndex();
    // JOptionPane.showMessageDialog(null, "Room selected index " + R);
    int intCount = (int) cRooms.getSelectedIndex();
    Room aRoom = (Room)roomList.get(R);
    if (intCount != -1) {
    if (aRoom.isBooked() == false) {
    JOptionPane.showMessageDialog(null, "Room " + ((Room)roomList.get(intCount)).getName() + " had Deleted");
    cRooms.removeItemAt(intCount);
    roomList.remove(intCount);
    } else {
    JOptionPane.showMessageDialog(null, "Room " + ((Room)roomList.get(intCount)).getName() + " Can Not be Delete");
    } else {
    JOptionPane.showMessageDialog(null, "Select A Room To be Delete ");
    public void AddNewRoom() {
    String rName = txtRoomName1.getText();
    String rCapacity = txtCapacity1.getText();
    boolean rInternet = chkInternet.isSelected();
    boolean rVideo = chkVideo.isSelected();
    Room nRoom = new Room(rName,rCapacity,rInternet,rVideo);
    cRooms.addItem(rName);
    int i = cRooms.getItemCount();
    roomList.add(nRoom);
    public void AddClearTextArea() {
    txtDisplay.setText("*****Rooms Detail*****" + "\n");
    public void AddBookRoom() {
    R = (int) cRooms.getSelectedIndex();
    D = (int) cDays.getSelectedIndex();
    Room aRoom = (Room)roomList.get(R);
    if (aRoom.reserve(D) == 0) {
    txtDisplay.setText("*****Rooms Detail*****" + "\n" + "Room is Booked" + "\n");
    } else {
    txtDisplay.setText("*****Rooms Detail*****" + "\n" + "Room Not Available" + "\n");
    public void itemStateChanged(ItemEvent itv) {
    if (itv.getSource() == cRooms) {
    R = (int) cRooms.getSelectedIndex();
    Room aRoom = (Room)roomList.get(R);
    lblRoomName.setText(aRoom.getName());
    lblCapacity.setText(String.valueOf(aRoom.getCapacity()));
    lblInternet.setText(aRoom.getInternet());
    lblVideo.setText(aRoom.getVideo());
    // lblStatus.setText(aRoom.rStatus);
    public class Room {
    public final String YES = "Yes";
    public final String NO = "No";
    private String rName = null;
    private int rCapacity = 0;
    private boolean rInternet = false;
    private boolean rVideo = false;
    private boolean [] booked = { false, false, false, false, false, false, false };
    Room(String name, String capacity, boolean hasInternet, boolean hasVideo)
    rName = new String(name);
    rCapacity = Integer.parseInt(capacity);
    rInternet = hasInternet;
    rVideo = hasVideo;
    public int reserve(int day) {
    if (booked[day] == true)
    return -1;
    booked[day] = true;
    return 0;
    public void checkOut(int day) {
    booked[day] = false;
    public boolean isBooked() {
    for (int i = 0; i < booked.length; i++)
    if (booked[i] == true)
    return true;
    return false;
    public boolean isBooked(int day) {
    return booked[day];
    public String getName() {
    return rName;
    public int getCapacity() {
    return rCapacity;
    public String getInternet() {
    if (rInternet == false)
    return NO;
    return YES;
    public String getVideo() {
    if (rVideo == false)
    return NO;
    return YES;
    public boolean matchCriterias(boolean hasInternet, boolean hasVideo) {
    if ((hasInternet == rInternet) && (hasVideo == rVideo))
    return true;
    return false;

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    Hello freinds,,
    I am in deep need..can anyone pls help me...
    I want to run my java programs on linux server.. Below are the steps I went thru to install jdk
    *** Download and copy j2sdk-1_3_1_10-linux-i586.rpm.bin to /usr/local/src.
    % su -
    # cd /usr/local/src
    # chmod +x j2sdk-1_3_1_10-linux-i586.rpm.bin
    # ./j2sdk-1_3_1_10-linux-i586.rpm.bin
    # rpm -ivh j2sdk-1_3_1_10-linux-i586.rpm
    Now test Java:
    # /usr/java/jdk1.3.1_10/bin/java -version
    Set the PATH environent variable.
    PATH="$PATH:/usr/java/jdk1.3.1_10/bin:."
    export PATH
    I went thru all above commands uninterruptedly.. Then I copied the folder containing programs in jdk1.3.1_10/bin folder
    Now when I am trying to complile or run an existing class it's gving following error message :
    java: command not found
    OR
    javac: command not found
    Can any one pls tell me where I am going wrong???
    Thanks in advance..

    From your query i understand you've installed java at "/usr/java/jdk1.3.1_10" location on your Linux box. I've a couple of queries -
    when u try to run "/usr/java/jdk1.3.1_10/bin/java -version" what do u see. Do u see the Java version information displayed on your screen ?
    and when you try export -ing the PATH variable with the following location added "/usr/java/jdk1.3.1_10/bin" and in the same shell type "which java" what do you see ? You should be seeing "/usr/java/jdk1.3.1_10/bin/java"
    If the above works then make changes to your profile file in order to ensure changes are saved for subsequent sessions.

  • "Exception in thread "main" java.lang.NumberFormatException"error..pls help

    Hi,
    I'm trying to run a program I've written but keeping getting this error:
    Exception in thread "main" java.lang.NumberFormatException: empty String
    at sun.misc.FloatingDecimal.readJavaFormatString(FloatingDecimal.java:994)
    at java.lang.Double.parseDouble(Double.java:482)
    at data.newLineToRead(data.java:21)
    at data.data(data.java:34)
    at train.main(train.java:86)
    I'm not quite sure where I'm going wrong.I've included the data class and train class.Could someone pls help me.
    Thanks a lot.
    Data Class:
    import java.io.*;
    import java.util.*;
    public class data{
            private static parameter par;
            private static double[][] x=new double[par.n()][par.D()];
            public static double[] t=new double[par.n()];
            public static void newLineToRead(String LineToRead,int n){
            int d=0;
            String stringToRead=new String();
                    for(int i=0;i<=LineToRead.length();i++){
                            StringTokenizer str = new StringTokenizer (stringToRead,"/t");
                            String[] strtemp = new String[str.countTokens()];
                                    while (str.hasMoreTokens()){
                                    x[n][d++] = Double.parseDouble(str.nextToken());
                                    d++;
                                    System.out.println(x[n][d++]);
                            stringToRead=new String();
                    t[n]=Double.parseDouble(stringToRead);
                    x[n][par.d()]=1.0;
            public static void data() throws IOException{
            DataInputStream in=null;
                    try{
                            in=new DataInputStream(new FileInputStream(par.f()));
                            for(int n=0;n<par.n();n++){
                            String LineToRead=in.readLine();
                                    if(LineToRead.length()==0){
                                            System.out.println("Remove empty lines");
                                    else{
                                            newLineToRead(LineToRead,n);
                    }finally{if(in!=null){in.close();}}
            public static double x(int n,int d){return x[n][d];}
            public static double t(int n){return t[n];}
    }Train Class
    import java.io.*;
    import java.util.*;
    public class train{
             private static parameter       par;
             private static data            dat;
             private static model           mod;
             private static response        resp;
             private static void error(String msg){
                    System.out.println(msg);
                    System.exit(1);
             private static void check(){
                if(par.f().length()==0)
                    error("No filename of input vectors!");
                if(par.n()==0)
                    error("No number of input vectors!");
                if(par.d()==0)
                    error("No number of input variables!");
                if(par.d()>par.D())
                    error("Dimension is larger than 100!");
              private static void usage(){
                System.out.println("Non-default parameters==========================");
                System.out.println("-f filename of input vectors");
                System.out.println("-n number of input vectors");
                System.out.println("-d number of input variables");
                System.out.println("Default parameters==========================");
                System.out.println("-R regularisation constant (must be positive and the default value is 0.0)");
                System.out.println("-S epsilon criterion for stopping a learning process (default value is 0.001)");
                System.out.println("-C maximum learning cycle (default value is 10000)");
                      public static void main(String[] argv){
                            if(argv.length==0){
                                    System.out.println("Command line is <Java [-cp path] train parameters>");
                                    usage();
                                    System.exit(1);
                            if(argv.length==1 && argv[0].equals("help")==true){
                                    usage();
                                    System.exit(1);
                            par.nin(0); par.din(0); par.Rin(0.0); par.Cin(10000); par.Sin(0.001);
    for(int i=0;i<argv.length;i++){
                                            if(argv.equals("-f")==true){
    if((i+1)==argv.length)
    error("miss the para");
    par.fin(argv[i+1]);
    i++;
    else if(argv[i].equals("-d")==true){
    if((i+1)==argv.length)
    error("miss the para");
    par.din(Integer.parseInt(argv[i+1]));
    i++;
    else if(argv[i].equals("-n")==true){
    if((i+1)==argv.length)
    error("miss the para");
    par.nin(Integer.parseInt(argv[i+1]));
    i++;
    else if(argv[i].equals("-S")==true){
    if((i+1)==argv.length)
    error("miss the para");
    par.Sin(Integer.parseInt(argv[i+1]));
    i++;
    else if(argv[i].equals("-C")==true){
    if((i+1)==argv.length)
    error("miss the para");
    par.Cin(Integer.parseInt(argv[i+1]));
    i++;
    else if(argv[i].equals("-R")==true){
    if((i+1)==argv.length)
    error("miss the para");
    par.Rin(Double.parseDouble(argv[i+1]));
    i++;
    else error("Unkown token");
    check();
    try {
    dat.data();
    }catch(IOException e) { System.err.println(e.toString()); }
    try {
    mod.model();
    }catch(IOException e) { System.err.println(e.toString()); }
    try {
    resp.record();
    }catch(IOException e){ System.err.println(e.toString()); }

    String stringToRead=new String();
                    for(int i=0;i<=LineToRead.length();i++){
                            StringTokenizer str = new StringTokenizer (stringToRead,"/t");
                            String[] strtemp = new String[str.countTokens()];
                                    while (str.hasMoreTokens()){
                                    x[n][d++] = Double.parseDouble(str.nextToken());
                                    d++;
                                    System.out.println(x[n][d++]);
                            stringToRead=new String();
                    t[n]=Double.parseDouble(stringToRead);
                    x[n][par.d()]=1.0;
            }Not sure exactly what you are trying to do above but...
    You are setting your String to an empty String with "new String()" and then parsing that empty String. Eventually, you are trying to parse a double from that empty String:
    t[n]=Double.parseDouble(stringToRead);Also, I cannot think of a reason to ever use "new String()" when you could just use:
    String myString = "";

  • QUERY CLARIFICATION RQD :  gurus, experts pls help

    Hai,
    I am facing problem in performance of the query. sample scenario i have created here pls help me to solve
    **VEH_MAIN* TABLE (MASTER TABLE)*
    CREATE TABLE VEH_MAIN
       (     VIP_MOT_IND VARCHAR2(10 BYTE),
         VIP_IND NUMBER(10,0)
    Insert into VEH_MAIN (VIP_MOT_IND,VIP_IND) values ('MOT01',1);
    Insert into VEH_MAIN (VIP_MOT_IND,VIP_IND) values ('MOT02',5);
    Insert into VEH_MAIN (VIP_MOT_IND,VIP_IND) values ('M0T03',1);
    Insert into VEH_MAIN (VIP_MOT_IND,VIP_IND) values ('MOT01',2);
    Insert into VEH_MAIN (VIP_MOT_IND,VIP_IND) values ('MOT02',6);
    Insert into VEH_MAIN (VIP_MOT_IND,VIP_IND) values ('MOT01',3);
    Insert into VEH_MAIN (VIP_MOT_IND,VIP_IND) values ('MOT01',4);
    **VEH_ENGINE_SUB* (table for engine subclass)*
      CREATE TABLE VEH_ENG_SUB
       (     ENG_SUBCLASS VARCHAR2(50 BYTE),
         ENG_MOT_IND VARCHAR2(10 BYTE)
    Insert into VEH_ENG_SUB (ENG_SUBCLASS,ENG_MOT_IND) values ('ENGSUB001','MOT01');
    Insert into VEH_ENG_SUB (ENG_SUBCLASS,ENG_MOT_IND) values ('ENGSUB001','MOT02');
    *VEH_ENG_IND( Detail table for engine subclass)*
      CREATE TABLE VEH_ENG_IND
       (     "ENG_SUBCLASS" VARCHAR2(50 BYTE),
         "ENG_IND" VARCHAR2(10 BYTE)
    Insert into VEH_ENG_IND (ENG_SUBCLASS,ENG_IND) values ('ENGSUB001','1');
    Insert into VEH_ENG_IND (ENG_SUBCLASS,ENG_IND) values ('ENGSUB001','2');
    *VEH_AXIS( Master table for Engine Axis)*
    CREATE TABLE VEH_AXIS
       (     ENG_AXIS VARCHAR2(50 BYTE),
         AXIS_MOT_IND VARCHAR2(10 BYTE)
    Insert into VEH_AXIS (ENG_AXIS,AXIS_MOT_IND) values ('ENGAXIS001','MOT01');
    Insert into VEH_AXIS (ENG_AXIS,AXIS_MOT_IND) values ('ENGAXIS002','MOT02');
    *VEH_AXIS_IND( Details table for engine axis)*
    CREATE TABLE VEH_AXIS_IND
       (     ENG_AXIS VARCHAR2(50 BYTE),
         ENG_IND VARCHAR2(10 BYTE)
    Insert into VEH_AXIS_IND (ENG_AXIS,ENG_IND) values ('ENGAXIS001','1');
    Insert into VEH_AXIS_IND (ENG_AXIS,ENG_IND) values ('ENGAXIS001','2');
    Insert into VEH_AXIS_IND (ENG_AXIS,ENG_IND) values ('ENGAXIS001','3');
    Insert into VEH_AXIS_IND (ENG_AXIS,ENG_IND) values ('ENGAXIS001','4');
    Insert into VEH_AXIS_IND (ENG_AXIS,ENG_IND) values ('ENGAXIS002','5');
    Insert into VEH_AXIS_IND (ENG_AXIS,ENG_IND) values ('ENGAXIS002','6');
    Condition 1
    if i select only ENGINE_SUBCLASS='ENGSUB001' then
    SELECT  vip_mot_ind,vip_ind
    FROM veh_main V,
    veh_eng_sub vsub,
    veh_eng_ind  vind
    WHERE (v.vip_mot_ind= vsub.eng_mot_ind
    and   v.vip_ind=vind.eng_ind
    and    vsub.eng_subclass= vind.eng_subclass
    AND vsub.eng_subclass='ENGSUB001' )output is
    MOT01     1
    MOT01     2
    Condition 2:if i select only the Engine Axis='ENGAXIS002' then the
    SELECT  vip_mot_ind,vip_ind
    FROM veh_main V,
    veh_axis  vaxis,
    veh_axis_ind vaind
    WHERE  v.vip_mot_ind= vaxis.axis_mot_ind
    and   v.vip_ind= vaind.eng_ind
    and   vaind.eng_axis= vaxis.eng_axis
    and   vaxis.eng_axis='ENGAXIS002';MOT02     5
    MOT02     6
    Condition 3:
    BOTH ENGINE AXIS AND ENGINE SUBCLASS
    SELECT  vip_mot_ind,vip_ind
    FROM veh_main V,
    veh_eng_sub vsub,
    veh_eng_ind  vind,
    veh_axis  vaxis,
    veh_axis_ind vaind
    WHERE (v.vip_mot_ind= vsub.eng_mot_ind
    and   v.vip_ind=vind.eng_ind
    and    vsub.eng_subclass= vind.eng_subclass
    AND vsub.eng_subclass='ENGSUB001' )
    AND  ( v.vip_mot_ind= vaxis.axis_mot_ind
    and   v.vip_ind= vaind.eng_ind
    and   vaind.eng_axis= vaxis.eng_axis
    and   vaxis.eng_axis='ENGAXIS002');Null values returned. this is correct.
    But the query PERFORMANCE fails in OR CONDITON as below
    Condition 4;
    SELECT  vip_mot_ind,vip_ind
    FROM veh_main V,
    veh_eng_sub vsub,
    veh_eng_ind  vind,
    veh_axis  vaxis,
    veh_axis_ind vaind
    WHERE (v.vip_mot_ind= vsub.eng_mot_ind
    and   v.vip_ind=vind.eng_ind
    and    vsub.eng_subclass= vind.eng_subclass
    AND vsub.eng_subclass='ENGSUB001' )
    OR  ( v.vip_mot_ind= vaxis.axis_mot_ind
    and   v.vip_ind= vaind.eng_ind
    and   vaind.eng_axis= vaxis.eng_axis
    and   vaxis.eng_axis='ENGAXIS002');output
    MOT02     5
    MOT02     5
    MOT02     5
    MOT02     5
    MOT02     6
    MOT02     6
    MOT02     6
    MOT02     6
    MOT01     1
    MOT01     1
    MOT01     1
    MOT01     1
    MOT01     1
    MOT01     1
    MOT01     1
    MOT01     1
    MOT01     1
    MOT01     1
    MOT01     1
    MOT01     1
    MOT01     2
    MOT01     2
    MOT01     2
    MOT01     2
    MOT01     2
    MOT01     2
    MOT01     2
    MOT01     2
    MOT01     2
    MOT01     2
    MOT01     2
    MOT01     2
    This is sample example. when i implement in huge table with partition this scennario takes much time even 2 hours to run.
    i want the output must be as below if i use OR condition like condition 4
    MOT01     1
    MOT01     2
    MOT02     5
    MOT02     6
    Gurus and experts pls help me to solve this problem. Dont give any suggestion like
    SELECT  vip_mot_ind,vip_ind
    FROM veh_main V,
    veh_axis  vaxis,
    veh_axis_ind vaind
    WHERE  v.vip_mot_ind= vaxis.axis_mot_ind
    and   v.vip_ind= vaind.eng_ind
    and   vaind.eng_axis= vaxis.eng_axis
    and   vaxis.eng_axis='ENGAXIS002'
    union
    SELECT  vip_mot_ind,vip_ind
    FROM veh_main V,
    veh_eng_sub vsub,
    veh_eng_ind  vind
    WHERE (v.vip_mot_ind= vsub.eng_mot_ind
    and   v.vip_ind=vind.eng_ind
    and    vsub.eng_subclass= vind.eng_subclass
    AND vsub.eng_subclass='ENGSUB001' )
    }this will give correct result...
    MOT01     1
    MOT01     2
    MOT02     5
    MOT02     6
    but the problem is we cannot implement this in query. because query get framed at runtime there will be so many implement has to be done. other than UNION pls give me more suggesion
    waiting..
    S
    Edited by: A Beginner on Sep 11, 2010 12:51 AM

    create a view v1 with all the joins
    select * from v1 where eng_subclass='ENGSUB001'
    union
    select * from v1 where eng_axis='ENGAXIS002'
    If you really do not like the direct access with union, try this
    select * from v1
    where vsub_PK in (select vsub_PK from v1 where eng_subclass='ENGSUB001' )
    OR vsub_PK in (select vsub_PK from v1 where eng_axis='ENGAXIS002')
    --vsub_PK is the primary key of table vsub                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           

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    Hi Joan,
                   Can u send the stack trace & code line , where u r getting NPE??
    regards
    Sumit

  • Pls help me about Runtime.getRuntime().exec("java...")

    I have two applications. One is Client, the other is Platform.
    In the Platform, there are source files packaged into a library named ZtConfig.jar used by Client. If run Client and Platform, two applications can execute normally.
    But if Client is started by user from platform, there is something wrong.
    I noticed the error difficultly with finally catching exception.
    I was puzzled. It is so strange. Pls help me. I list some codes here.
    In Client where finally exception catched:
    import zt.config;
            try {
              xmlFileUrl = new java.net.URL(
                  "file:///e:/Client/src/config/nsr1000.xml");
            catch (IOException ex1) {
              FileLogger.error(ex1.getMessage());
            FileLogger.info("NSR1000Document.setIEDContent", xmlFileUrl.toString());
            try {
              xmlLoader = new XMLConfigLoader(xmlFileUrl);
            finally {
              FileLogger.error("NSR1000Document.setIEDContent",
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    In the XMLConfigLoader, the constructor is
      public XMLConfigLoader(java.net.URL xmlFileUrl) {
        this.xmlFileUrl = xmlFileUrl;
        configDoc = null;
        builder = null;
        xmlDoc = null;
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      Runtime.getRuntime().exec(
                    "java -jar e:/Client/Client.jar");

    I've got it!
    Briefly, it is because classpath setting was overwritten by JBuilder.
    Firstly, I start Platform from JBuilder. In its messages window. The command is
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    Now, classpath environment variable was changed to be JBPATH. While I start
    Client use Runtime.getRuntime().exec("java -jar Client.jar"), it will not run for classpath changed.
    Then, I configured all packages used by Client into JBuilder libraries, including
    Client.jar. And changed codes Runtime.getRuntime().exec("java -jar Client.jar") to be Runtime.getRuntime().exec("java -Xmx128m zt.client.nsr1000.NSR1000App")
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  • Pls help me about two java virtual machine

    have two applications. One is Client, the other is Platform.
    In the Platform, there are source files packaged into a library named ZtConfig.jar used by Client. If run Client and Platform, two applications can execute normally.
    But if Client is started by user from platform, there is something wrong.
    I noticed the error difficultly with finally catching exception.
    I was puzzled. It is so strange. Pls help me. I list some codes here.
    In Client where finally exception catched:
    import zt.config;
            try {
              xmlFileUrl = new java.net.URL(
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