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That depends on the level of the project. You can create a single page application with a single
System.out.println("Ticket booked!");
or you can create an entire application for keeping the ticket records, user records and other transport means information and so on. But first, come up with a basic algorithm and the code that you've tried; atleast the algorithm. Asking a one-liner question doesn't help you or us.
The sh*t I complain about
It's like there ain't a cloud in the sky and it's raining out - Eminem
~! Firewall !~
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Greetings, everything in this code works except when the i input the weight and height the result is not shown in the textbox (v_text).. please help me
package bmicalculator;
import static com.sun.corba.se.impl.orbutil.CorbaResourceUtil.getText;
import java.lang.*;
import java.awt.Color;
import java.awt.Font;
import java.awt.GridLayout;
import java.awt.event.*;
import java.io.*;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.PrintWriter;
import java.io.IOException;
import javax.swing.*;
import javax.swing.event.*;
import javax.swing.JPanel;
import javax.swing.JFileChooser;
import java.awt.Container;
import java.beans.PropertyChangeListener;
import java.beans.PropertyChangeEvent;
public class BMICalculator extends JFrame implements ActionListener, PropertyChangeListener
{
JPanel p_format;
JPanel p_text;
JLabel f_name;
JLabel height;
JLabel weight;
JTextField n_text;
JFormattedTextField h_text;
JFormattedTextField w_text;
JFormattedTextField v_text;
JTextField r_text;
JTextArea a_text;
JButton v_bmi;
JButton result;
JButton r_done;
JButton r_save;
JButton r_reset;
JButton f_open;
JFileChooser chooser = new JFileChooser();
String Height, Weight;
double BMI;
static String output = "Results";
static int jopIcon = JOptionPane.QUESTION_MESSAGE;
boolean bFlag = true;
Font font;
static int f_size = 16;
static int style = Font.PLAIN;
static String font_name = " Harrington ";
double number1;
double number2;
public BMICalculator (String s)
{
super(s);
font = new Font(font_name, style, f_size);
getContentPane().setLayout(new GridLayout(1,2));
p_format = new JPanel();
p_text = new JPanel();
p_text.setLayout(null);
f_name = new JLabel(" Name: ");
f_name.setSize(120,60);
f_name.setLocation(30, 30);
f_name.setForeground(Color.DARK_GRAY);
n_text = new JTextField(40);
n_text.setSize(120,60);
n_text.setLocation(70,30);
height = new JLabel(" Height(meter) : ");
height.setSize(90, 60);
height.setLocation(30,60 );
height.setForeground(Color.RED);
h_text = new JFormattedTextField();
h_text.setColumns(10);
h_text.setLocation(70, 60);
h_text.setValue(new Double(number1));
h_text.addPropertyChangeListener("value", this);
weight = new JLabel(" Weight(kilogram): ");
weight.setSize(90, 60);
weight.setLocation(30, 90);
weight.setForeground(Color.RED);
w_text = new JFormattedTextField( );
w_text.setColumns(10);
w_text.setLocation(70, 90);
w_text.setValue(new Double(number2));
w_text.addPropertyChangeListener("value", this);
v_bmi = new JButton("Your BMI: ");
v_bmi.setSize(90, 60);
v_bmi.setLocation(30,190);
v_bmi.setForeground(Color.BLUE);
v_bmi.addPropertyChangeListener("value", this);
v_bmi.addActionListener(this);
v_text = new JFormattedTextField( );
v_text.setColumns(10);
v_text.setLocation(70, 190);
v_text.setValue(BMI);
v_text.addPropertyChangeListener("value", this);
result = new JButton("Your level: ");
result.setSize(60, 60);
result.setLocation(30,250);
result.setForeground(Color.BLUE);
result.addActionListener(this);
r_text = new JTextField(45);
r_text.setSize(90, 60);
r_text.setLocation(70, 250);
r_text.addActionListener(this);
a_text = new JTextArea(30,45);
a_text.setSize(200,200);
a_text.setLocation(30, 300);
r_done = new JButton(" Done! ");
r_done.setSize(120,30);
r_done.setLocation(30, 350);
r_done.setForeground(Color.BLACK);
r_done.addActionListener(this);
r_save = new JButton(" Save ");
r_save.setSize(120,30);
r_save.setLocation(60, 350);
r_save.setForeground(Color.MAGENTA);
r_save.addActionListener(this);
r_reset = new JButton(" Reset ");
r_reset.setSize(120,30);
r_reset.setLocation(90, 350);
r_reset.setForeground(Color.RED);
r_reset.addActionListener(this);
f_open = new JButton(" Open ");
f_open.setSize(120,30);
f_open.setLocation(120, 350);
f_open.setForeground(Color.BLUE);
f_open.addActionListener(this);
JScrollPane textScrollPane=new JScrollPane(a_text);
textScrollPane.setSize(300,300);
textScrollPane.setLocation(30,300);
p_format.setBackground(Color.PINK);
p_format.add(f_name);
p_format.add(n_text);
p_format.add(height);
p_format.add(h_text);
p_format.add(weight);
p_format.add(w_text);
p_format.add(v_bmi);
p_format.add(v_text);
p_format.add(result);
p_format.add(r_text);
p_format.add(a_text);
p_format.add(r_done);
p_format.add(r_save);
p_format.add(r_reset);
p_format.add(f_open);
p_format.add(textScrollPane);
getContentPane().add(p_format);
}
public static void main(String args[])
{
BMICalculator k=new BMICalculator("SHARIMAH SAKKA Project");
k.setSize(550, 700);
k.show();
k.setVisible(true);
k.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
}
void BMIResult()
{
Height = height.getText();
Weight = weight.getText();
number1 = Double.parseDouble(Height);
number2 = Double.parseDouble(Weight);
BMICalculate(number1, number2);
}
public void BMICalculate(double number1, double number2)
{
try
{
number1 = (double) ((Number)h_text.getValue());
number2 = (double) ((Number)w_text.getValue());
BMI = (number2 / ((number1) * (number1)));
}
catch (NumberFormatException nfe)
{
output += "\n\n Whoa! Input error: must enter valid integers";
jopIcon = JOptionPane.ERROR_MESSAGE;
}
}
void saveToFile()
{
if (chooser.showSaveDialog(null) == JFileChooser.APPROVE_OPTION)
{
File saveFile = chooser.getSelectedFile();
try
{
PrintWriter out = new PrintWriter (new FileWriter(saveFile));
out.print (a_text.getText());
out.close();
}
catch (IOException e)
{
JOptionPane.showMessageDialog(null, "Could not save the file " + e.getMessage());
}
}
}
void loadFromFile()
{
if (chooser.showOpenDialog(null) == JFileChooser.APPROVE_OPTION)
{
File loadFile = chooser.getSelectedFile();
try
{
BufferedReader in = new BufferedReader (new FileReader(loadFile));
a_text.setText("");
String nextLine = in.readLine();
while (nextLine != null)
{
a_text.append(nextLine + "\n");
nextLine = in.readLine();
}
in.close();
}
catch (IOException ie)
{
JOptionPane.showMessageDialog(null, "Could not load the file " + ie.getMessage());
}
}
}
@Override
public void actionPerformed(ActionEvent x)
{
if(x.getSource()==v_bmi)
{
v_text.setValue(new Double(BMI));
}
if(x.getSource()==result)
{
r_text.getText();
if (BMI >= 29)
{
r_text.setText(" High Risk zone(UnHealthy).Please start losing weight!It's a MUST!!! ");
}
else if (BMI <= 25 || BMI < 28.9)
{
r_text.setText(" Moderate Risk zone.Please start going on diet and lose some weight! ");
}
else if (BMI <= 18.5 || BMI < 24.9)
{
r_text.setText(" Low Risk zone(Healthy).Hopefully you can maintain this way! ");
}
else if (BMI < 18.4)
{
r_text.setText(" Need to start eating more. Too skinny and unhealthy for your body. ");
}
}
if(x.getSource()==r_done)
{
String s= "Name: " + n_text.getText()+ "\n"+"Height: " + h_text.getText()+"\n"+"Weight: " + w_text.getText()+"\n"+"BMI: " + v_text.getText()+"\n"+"Result: " + r_text.getText();
a_text.setText(s);
}
if(x.getSource()==r_reset)
{
String s=n_text.getText() +h_text.getText()+w_text.getText()+ v_text.getText()+r_text.getText();
n_text.setText(null);
h_text.setText(null);
w_text.setText(null);
v_text.setText(null);
r_text.setText(null);
a_text.setText(null);
}
if(x.getSource()==r_save)
{
saveToFile();
}
if(x.getSource()== f_open)
{
loadFromFile();
}
}
@Override
public void propertyChange(PropertyChangeEvent x)
{
Object source = x.getSource();
if(source==v_bmi)
{
String b;
b = Double.valueOf(BMI).toString();
v_text.setValue(new Double(b));
}
}
}
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Too much code, so I'm not going to look through all of it.
This caught my attention as "obviously wrong" though: else if (BMI <= 25 || BMI < 28.9) that's really just BMI < 28.9, the other part is redundant. It's probably meant to be >= 25?
But then the logic also doesn't quite work, because clearly there is a gap between 25 and 24.9, a rather large gap at that - if I counted them correctly, there are 28147497671065 doubles that have a value strictly between 24.9 and 25, which implies that almost all of them won't be generated by sensible inputs, but see for example 90kg / 1.90m2.
Also, BMICalculate does some unexpected things, taking nice arguments and then ignoring them and pulling its values from some control.
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which project i will do in third year. Now i am in second year Bs.C IT.......
Please suggest.........
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Anything you can think of that is a) within your skill level, and b) a subject that you understand. If you are really stuck then ask your professor to allocate you something.
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Write a compiler in java.
The difficult we do right away...
...the impossible takes slightly longer.
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Hello...
In my project work I was supposed to automatically login and create a ticket to a support system. here are the steps I planned to follow
1. Get HTML content of login page by using Get method with HttpsURLConnection.
2. Parse HTML content using jSoup library and extract form input elements.
3. Get the names of the attributes of the form and prepare a parameter list with custom data (like user name, Password) and remaining application generated parameters.
4. Now Send a post request to Login page url with the parameter list ( which also will have other paremeters which are not supposed to be changed).
5. After post request successful I receive the HTML content of page which occurs after login via BufferedReader with InputStream Object of HttpsURLConnection.
6. Now I will send a "GET" request to the page which has a Ticket opening form and receive HTML content of the page.
7. Parse HTML content using jSoup library and extract form input elements.
8. Get the names of the attributes and preapare a parameter list (which will have the details of ticket which needs to be updated and submitted to webservice to complete ticket creation) this should be a multipart form data ( I set headers accordingly).
9. Then post it to the ticket creation web service.
10. Process will complete If a ticket gets created.
Currently
I am able to successfully login to the website, get the parameters and set all the attributes and formdata. but I'm stuck with few errors. Currently I'm getting InvalidStateException : Already Connected error.
I am running the code on IntelliJ IDEA 14 Community Edition. Can anyone please help me with this error. and also it would be great if you can correct me if I'm going in wrong direction to get what I'm trying to do here.
Lines - 448 through 453 of the file.
Here is the code.
CompleteProgram.java
Thanks,
Sudhir.
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please how can I develope a web base chat application am a student of computer science that's my project topic design an implementation of webbase chat application pls I need a guide to achieve these....thank you
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What specific help do you need? Have you researched what tutorials there are on this subject?
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the help I need is a guide on how to achieve these project. I hv gone on research on it but what I see are not straight to my understanding.......please I need your assistance here please
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OK sir.....I was able to design a program that can save,delet'search,add, using the netbeans java jframe.....I want to create a space to accept an individual image or passport how can I achieve that
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If there is no such element which we are looking for,
elementFound=driver.findElement(By.name(locatorValue));
what will return into elementfound
if no such element how can we set elementfound to null
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What happens when you try it?
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Hi,I am trying to write a java code for SMS dictionary.This is my sample input and output.
Sample input:
4//the number of inputs to be given
at
on
good
no
Sample output:
66//maximum occurrence is printed here.
The conversion takes place as follows.
at->28
on->66
good->4663
no->66
This is similar to the way in which messages are typed in a basic series mobile. My code displays the conversion but the output should be the number with maximum occurrence like 66 in the above sample.I get NullPointerException while trying to save the values to a buffer.Thanks in advance.
package sms;
import java.util.Arrays;
import java.util.Scanner;
class done
{
String astring;
int m=0;
String buffer[];
String temp1[];
int temp2[];
int b = 0;
char val2[]={'a','b','c'};
char val3[]={'d','e','f'};
char val4[]={'g','h','i'};
char val5[]={'j','k','l'};
char val6[]={'m','n','o'};
char val7[]={'p','q','r','s'};
char val8[]={'t','u','v'};
char val9[]={'w','x','y','z'};
Scanner in=new Scanner(System.in);
@SuppressWarnings("empty-statement")
void fun()
{
System.out.println("Enter the number of strings");
int num=in.nextInt();
System.out.println("enter the strings");
for(int k=0;k<=num;k++)
{
astring =in.nextLine();
b=astring.length();
char c;
for(int i=0;i<b;i++)
{
c=astring.charAt(i);
if((c==val2[0])||(c==val2[1])||(c==val2[2]))
{
System.out.print("2");
temp1[i] =("2");
}
else if((c==val3[0])||(c==val3[1])||(c==val3[2]))
{
System.out.print("3");
temp1[i] =("3");
}
else if((c==val4[0])||(c==val4[1])||(c==val4[2]))
{
System.out.print("4");
temp1[i] =("4");
}
else if((c==val5[0])||(c==val5[1])||(c==val5[2]))
{
System.out.print("5");
temp1[i] =("5");
}
else if((c==val6[0])||(c==val6[1])||(c==val6[2]))
{
System.out.print("6");
temp1[i] =("6");
}
else if((c==val7[0])||(c==val7[1])||(c==val7[2])||(c==val7[3]))
{
System.out.print("7");
temp1[i] =("7");
}
else if((c==val8[0])||(c==val8[1])||(c==val8[2]))
{
System.out.print("8");
temp1[i] =("8");
}
else if((c==val9[0])||(c==val9[1])||(c==val9[2])||(c==val9[3]))
{
System.out.print("9");
temp1[i] ="9";
}
}
temp2[k]=Integer.parseInt(temp1[k]);
}
}
}
class SMS
{
public static void main(String args[])
{
done obj;
obj = new done();
obj.fun();
}
}
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You forgot to allocate any space to your buffer arrays. You could also make that code much neater by using the numeric value of a letter to decide which number it corresponds to.
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Please can someone help with a good document to learn CORE JAVA part? Also, please can you suggest me with some important concepts to get a very good hold on the core part?
Thanks.
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u can get easy notes for java 
just go to
http://way2java.com/
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How can i get time of sending and receiving messages between computers through time of flight based technique ?
i want the java code for it..
im doing the project called "discover and verification of neighbour position in MANET" ..IF U CAN PLEASE SEND THE JAVA CODE ..
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What does "time of flight" has to do with time APIs in Java?
Anyway, you can work your way around from this Oracle Java developers document[^]. You can get the time before sending the message, and at the time of recieving the message from the network.
The sh*t I complain about
It's like there ain't a cloud in the sky and it's raining out - Eminem
~! Firewall !~
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