com.jrefinery.chart.demo
Class JFreeChartServletDemo
java.lang.Object
|
+--javax.servlet.GenericServlet
|
+--javax.servlet.http.HttpServlet
|
+--com.jrefinery.chart.demo.JFreeChartServletDemo
- All Implemented Interfaces:
- java.io.Serializable, javax.servlet.Servlet, javax.servlet.ServletConfig
- public class JFreeChartServletDemo
- extends javax.servlet.http.HttpServlet
A servlet demonstration, contributed by Wolfgang Irler.
- Author:
- WI
- See Also:
- Serialized Form
Method Summary |
CategoryDataset |
createCategoryDataset()
Creates and returns a sample category dataset for the demo charts. |
protected JFreeChart |
createChart(int type,
int initGradColor,
int finalGradColor)
Returns a chart. |
HighLowDataset |
createHighLowDataset()
Creates and returns a sample high-low dataset for the demo. |
XYDataset |
createTestXYDataset()
Creates and returns a XYDataset for the demo charts. |
void |
doGet(javax.servlet.http.HttpServletRequest request,
javax.servlet.http.HttpServletResponse response)
Basic servlet method, answers requests fromt the browser. |
protected java.awt.Color |
getColor(int color)
Utility method to return a color. |
void |
init(javax.servlet.ServletConfig config)
Override init() to set up data used by invocations of this servlet. |
Methods inherited from class javax.servlet.http.HttpServlet |
doDelete, doHead, doOptions, doPost, doPut, doTrace, getLastModified, service, service |
Methods inherited from class javax.servlet.GenericServlet |
destroy, getInitParameter, getInitParameterNames, getServletConfig, getServletContext, getServletInfo, getServletName, init, log, log |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
JFreeChartServletDemo
public JFreeChartServletDemo()
getColor
protected java.awt.Color getColor(int color)
- Utility method to return a color. Corresponds to the color selection in the
HTML form.
- Parameters:
color
- the color index.- Returns:
- a color.
createCategoryDataset
public CategoryDataset createCategoryDataset()
- Creates and returns a sample category dataset for the demo charts.
- Returns:
- a sample category dataset.
createTestXYDataset
public XYDataset createTestXYDataset()
- Creates and returns a XYDataset for the demo charts.
- Returns:
- a sample XY dateset.
createHighLowDataset
public HighLowDataset createHighLowDataset()
- Creates and returns a sample high-low dataset for the demo. Added by Andrzej Porebski.
- Returns:
- a sample high low dataset.
createChart
protected JFreeChart createChart(int type,
int initGradColor,
int finalGradColor)
- Returns a chart.
- Parameters:
type
- the chart type.initGradColor
- the first color for the gradient.finalGradColor
- the final color for the gradient.- Returns:
- the chart.
init
public void init(javax.servlet.ServletConfig config)
throws javax.servlet.ServletException
- Override init() to set up data used by invocations of this servlet.
- Overrides:
init
in class javax.servlet.GenericServlet
- Parameters:
config
- configuration info.- Throws:
javax.servlet.ServletException
- if there is a problem.
doGet
public void doGet(javax.servlet.http.HttpServletRequest request,
javax.servlet.http.HttpServletResponse response)
throws javax.servlet.ServletException,
java.io.IOException
- Basic servlet method, answers requests fromt the browser.
- Overrides:
doGet
in class javax.servlet.http.HttpServlet
- Parameters:
request
- HTTPServletRequestresponse
- HTTPServletResponse- Throws:
javax.servlet.ServletException
- if there is a servlet problem.java.io.IOException
- if there is an I/O problem.