Bar chart in jsp

Hi,
I want to develop bar charts using JSP.
Can you please tell me the simplest way so that I can develop bar charts.
Thanks

If you want, you could draw the charts using the HTML5 canvas tag with some JavaScript to draw the chart on the canvas. Though if I remember correctly, to get this to work in IE6, you need to include the excanvas script on your page; not sure about IE7 and IE8.
I make no claims as to whether this is a good approach for what you are doing, but it's another option.

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Hi Everyone,
I have never worked with charts earlier. I created one demo for generating a bar chart using a java class. I am using awt classes here. Chart was rendered successfully on running this java class. My problem is i want to integrate this class with a JSP, by involving servlets. I tried to do it many a times now but yet not successfull.
My requirement is, on the hit of 'generate chart' in one jsp, bar chart should be rendered.
Can somebody plz help???
Thanks in advance

Has no update on the problem mentioned. However, you can try elegantj charts. It creates customized, dynamic charts in few minutes.
Link: www.elegantjcharts.com

How to display bar charts in jsp

I need bar charts for web application.
I search alot but I didn't find any solution.
From where I can find the content for same?

You're right I did read about Cewolf. Here's how
You can simply define a chart by including a chart tag into your JSP like this:
<cewolf:chart
id="XYChart"
type="xy"
title="XYChart"
<cewolf:gradient>
<cewolf:point x="0" y="0" color="#FFFFFF"/>
<cewolf:point x="0" y="300" color="#C8C8C8"/>
</cewolf:gradient>
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Hi..Is it possible to create a servlet that processes data from database and display the values as Bar Charts in jsp pages. If its possible, is there any examples on how to achieve that?

I don't get it. You already know what needs to be done to solve your problem, the only thing you are missing is the HOW. That's the easy part, if only you break down what you have to know:
1) how do I show an image on a website (this is a basic HTML question actually, not actually related to servlets/JSPs directly)
2) how do I fetch the path from a database (JDBC question) so that I can use this path to link to my image on disc
So what is preventing you from figuring out how to do these two simple tasks? Some clever google searches should give you all the information you need in no time.
by the way: are you sure that you need to store these paths in the database? Is this part of some file upload component?

Displaying BAR chart using JSPChart , Sysbase database, Jrun server

I would like to explain my requirements to you.
1. I will be displaying a Exponential bar chart. The length of bar chart is obatined from Sybase database.
2. This chart should be dynamically created depending on the value on the database and x -axis is exponential.
This will be displayed on a HTML page.
Hope this is clear. Basically, I want to show the database values using a chart on a Web Page.
Can this be done, if so, pl give me further info if possible.
I have downloaded JSP chart from
http://www.javaside.com/asp/menu_fr.asp?page=jspChart.shtml
Pl reply ASAP.
Thanks in advance

Serious fraud allegations leveled against Elansoft, in the web pages: http://www.manero.org/weblog/archives/000083.html
or
http://archives.real-time.com/pipermail/cocoon-users/2003-March/031298.html .
If the charges were not true, Elansoft might have angrily denied. Instead, Elansoft closed US office and ran from the law. If Elansoft continue to evade the laws, what kind of legal protection buyers could get from the legal system?
These are credible charges, because, it is impossible to believe Agileblox could get more votes than OpenOffice (which has been downloaded by millions of users) and more votes than SVG-technology itself (which has support of tens of thousands of die hard developers, and many companies building products around the technology).
In the news release, Pravin Raju, CEO, said Agileblox rated higher than products from Sun, Oracle and Macromedia:
http://www.blonnet.com/bline/2002/10/11/stories/2002101101590900.htm
The CEO may be ignorant enough to know, that all those products are well known and financially successful. There were hundreds of news article published in respected technology journals about each one of them. There are many developer groups (Ex: user-groups and discussion forums) about each of them. Each of these forums patronized by thousands of developers each month.
Is there any detailed product review for Agileblox out there? How about any freelance discussion? May be too stupid to participate in technical debate? What about, at least one use case presentation from a �real- happy customer? The crooks committed fraud. Pravin Raju, CEO of Elansoft, shamelessly claimed his product had rated higher than many respected products. What a moron?
Look at Agileblox documentation and flowchart. Does the flowchart make any sense, or look like work of a software guy? Does Elansoft know any thing about product development? Why they have not able to release any upgrade to Agileblox for so long? Who developed Aileblox? Are they still working at Elansoft?
P.S: Please send any information and names of the players of the Award scam to: [email protected]

Displaying graphical representation of data in hash tables as bar chart?

I want to be able to display results in my hash table as a bar chart i don't know how to do it could someone help me I've looked through tutorials couldn't find any information that actually helped.
In my program it doesnt allow matching the capital and small letters
so for instance if I already have Mike it allows for me to input mike in again so there are 2 Mikes.
I also want to do a simple user interface the tutorial for it is not simple to understand could any one tell me how to create a simple user interface like putting a button into a place wher i want it to be.
im not asking anyone to do it for me i just want people to show me how to do it
thank you
Edited by: Tek_Hedef on Dec 1, 2007 4:30 AM

Thanks for the ideas pal but I did have a go at it but my bit of code is making it crash but i removed it now so here's what I have so far
import java.io.*;
import java.util.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.event.*;
class StudentDetails extends JFrame implements ActionListener
 private JTextField StudentNameTxt, StudentMarkTxt;
 private JButton DeleteStudentDetailsBtn, DisplayAllStudentsBtn, SearchStudentBtn, FailedStudentsBtn, PassedStudentsBtn, DistinctionStudentsBtn, AddStudentDetailsBtn, ExitBtn;
 private JPanel DisplayStudentDetailsPnl;
 private JLabel StudentNameLbl, StudentMarkLbl;
 private JTextArea DisplayResultsTxt;
 private Hashtable StudentDetailsTbl;
 private String StudentName, StudentMark;
 public static void main(String[] args)
 StudentDetails frame = new StudentDetails();
 frame.setSize(600,600);
 frame.createGUI();
 frame.setVisible(true);
 public void display(JPanel DisplayStudentDetailsPnl)
 Graphics paper = DisplayStudentDetailsPnl.getGraphics();
 paper.setColor(Color.white);
 paper.fillRect(0, 0, 500, 500);
 paper.setColor(new Color((int)(Math.random()*255),(int)(Math.random()*255),(int)(Math.random()*255) ));
 private void createGUI()
 setDefaultCloseOperation(EXIT_ON_CLOSE);
 Container window = getContentPane();
 window.setLayout(new FlowLayout());
 StudentDetailsTbl = new Hashtable();
 StudentNameLbl = new JLabel("Student Name");
 window.add(StudentNameLbl);
 StudentNameTxt = new JTextField(15);
 window.add(StudentNameTxt);
 StudentMarkLbl = new JLabel("Student Mark");
 window.add(StudentMarkLbl);
 StudentMarkTxt = new JTextField(3);
 window.add(StudentMarkTxt);
 AddStudentDetailsBtn = new JButton("Add Student and Mark");
 window.add(AddStudentDetailsBtn);
 AddStudentDetailsBtn.addActionListener(this);
 DeleteStudentDetailsBtn = new JButton("Delete Student");
 window.add(DeleteStudentDetailsBtn);
 DeleteStudentDetailsBtn.addActionListener(this);
 DisplayAllStudentsBtn = new JButton("Display all Students and Marks");
 window.add(DisplayAllStudentsBtn);
 DisplayAllStudentsBtn.addActionListener(this);
 SearchStudentBtn = new JButton("Search Student");
 window.add(SearchStudentBtn);
 SearchStudentBtn.addActionListener(this);
 FailedStudentsBtn = new JButton("Students which Failed");
 window.add(FailedStudentsBtn);
 FailedStudentsBtn.addActionListener(this);
 PassedStudentsBtn = new JButton("Students which Passed");
 window.add(PassedStudentsBtn);
 PassedStudentsBtn.addActionListener(this);
 DistinctionStudentsBtn = new JButton("Students with Distinction");
 window.add(DistinctionStudentsBtn);
 DistinctionStudentsBtn.addActionListener(this);
 ExitBtn = new JButton("Exit");
 window.add(ExitBtn);
 ExitBtn.addActionListener(this);
 DisplayResultsTxt = new JTextArea();
 DisplayResultsTxt.setPreferredSize(new Dimension(200, 200));
 DisplayResultsTxt.setBackground(Color.white);
 window.add(DisplayResultsTxt);
 DisplayResultsTxt.enable(false);
 public void actionPerformed (ActionEvent e)
 if (e.getSource()== AddStudentDetailsBtn)
 StudentName = StudentNameTxt.getText();
 StudentMark = StudentMarkTxt.getText();
 DisplayResultsTxt.setText("");
 StudentDetailsTbl.put(StudentName, StudentMark);
 Enumeration enumStudentName = StudentDetailsTbl.keys();
 Enumeration enumStudentMark = StudentDetailsTbl.elements();
 String[] keys = (String[]) StudentDetailsTbl.keySet().toArray(new String[0]);
 Arrays.sort(keys);
 for (String key : keys)
 DisplayResultsTxt.append(key + " : " + StudentDetailsTbl.get(key)+ "\n");
 StudentNameTxt.setText("");
 StudentMarkTxt.setText("");
 if (e.getSource() == DeleteStudentDetailsBtn )
 if (StudentDetailsTbl.containsKey(StudentNameTxt.getText().trim()))
 DisplayResultsTxt.setText("");
 String txt = StudentNameTxt.getText();
 Enumeration enumStudentName = StudentDetailsTbl.keys() ;
 String currentelement = (String)enumStudentName.nextElement();
 StudentDetailsTbl.remove(txt);
 DisplayResultsTxt.append(txt + " has been deleted");
 if (e.getSource() == SearchStudentBtn)
 if (StudentDetailsTbl.containsKey(StudentNameTxt.getText().trim()))
 String txt = StudentNameTxt.getText();
 String result;
 DisplayResultsTxt.setText("");
 Enumeration enumStudentName = StudentDetailsTbl.keys();
 Enumeration enumStudentMark = StudentDetailsTbl.elements();
 while (enumStudentName.hasMoreElements())
 String currentelement = (String)enumStudentName.nextElement();
 result = (StudentDetailsTbl.get(currentelement).toString());
 if (txt.equals(currentelement))
 DisplayResultsTxt.append(currentelement + " " + result);
 else JOptionPane.showMessageDialog(null, "Student Name could not be identified");
 if (e.getSource() == DisplayAllStudentsBtn)
 DisplayResultsTxt.setText("");
 Enumeration enumStudentName = StudentDetailsTbl.keys();
 Enumeration enumStudentMark = StudentDetailsTbl.elements();
 while (enumStudentName.hasMoreElements())
 DisplayResultsTxt.append(enumStudentName.nextElement()+ " " + enumStudentMark.nextElement()+ "\n");
 if (e.getSource() == PassedStudentsBtn)
 DisplayResultsTxt.setText("");
 Enumeration enumStudentName = StudentDetailsTbl.keys();
 Enumeration enumStudentMark = StudentDetailsTbl.elements();
 while (enumStudentName.hasMoreElements())
 int Mark = Integer.parseInt((String)enumStudentMark.nextElement());
 String Name = (String)enumStudentName.nextElement();
 if (Mark >=40)
 DisplayResultsTxt.append(Name + " " + Mark + "\n");
 if (e.getSource() == FailedStudentsBtn)
 DisplayResultsTxt.setText("");
 Enumeration enumStudentName = StudentDetailsTbl.keys();
 Enumeration enumStudentMark = StudentDetailsTbl.elements();
 while (enumStudentName.hasMoreElements())
 int Mark = Integer.parseInt((String)enumStudentMark.nextElement());
 String Name = (String)enumStudentName.nextElement();
 if (Mark <40)
 DisplayResultsTxt.append(Name + " " + Mark + "\n");
 if (e.getSource() == DistinctionStudentsBtn)
 DisplayResultsTxt.setText("");
 Enumeration enumStudentName = StudentDetailsTbl.keys();
 Enumeration enumStudentMark = StudentDetailsTbl.elements();
 while (enumStudentName.hasMoreElements())
 int Mark = Integer.parseInt((String)enumStudentMark.nextElement());
 String Name = (String)enumStudentName.nextElement();
 if (Mark >=75)
 DisplayResultsTxt.append(Name + " " + Mark + "\n");
}

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Thanks...

When you open the default New Tab page - about:newtab - which has the Tiles and a Search Bar, the "focus" is in the Search Bar. You could change a hidden setting to have a blank page when you open a new tab if that's what you want - that will have the "focus" in the Location Bar . URL Bar.
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How can I show a 0% range in the data value label on a bar chart thanks?

I'm not sure what the question is.
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Hello everyone,
I am building a series of graphs and bar charts for my thesis.
I am struggling top fin an option that would allow me to but a "n=number" kind of entry at the end of the chart.
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Cheers,
Tiago

Hello Jerrold
Thank you very much for the help mate!
It might take a little longer to edit all the graphs, but it's a start
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Tiago

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I have the graph start and end points set and scaling by month as I would like but each bar is a day instead of aggregating to a month level. My issue I hope to find a workaround for is if I go to Category Groups and define the grouping
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Hi cybertosis,
If I understand correctly, you want to display all month category label in the X-Axis. You have configure the Scalar Axis, however, it cannot display the requirement format.
In your case, if we want the specific data format, we can configure Number property to set the corresponding Category data format. Please refer to the following steps:
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Please refer to the following screenshot below:
If there are any misunderstanding, please feel free to let me know.
Regards,
Alisa Tang
If you have any feedback on our support, please click
here.
Alisa Tang
TechNet Community Support

Bar chart in jsp

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