in my project have some errors please rectify my errors to help me

{type Exception report

message

descriptionThe server encountered an internal error () that prevented it from fulfilling this request.

exception org.apache.jasper.JasperException: PWC6033: Error in Javac compilation for JSP

PWC6199: Generated servlet error: package org.jfree.ui does not exist

PWC6199: Generated servlet error: package org.jfree.chart does not exist

PWC6199: Generated servlet error: package org.jfree.chart does not exist

PWC6199: Generated servlet error: package org.jfree.chart.plot does not exist

PWC6199: Generated servlet error: package org.jfree.chart does not exist

PWC6199: Generated servlet error: package org.jfree.chart does not exist

PWC6199: Generated servlet error: package org.jfree.chart does not exist

PWC6199: Generated servlet error: package org.jfree.data does not exist

PWC6199: Generated servlet error: package org.jfree.data.jdbc does not exist

PWC6197: An error occurred at line: 23 in the jsp file: /JobsChart.jsp PWC6199: Generated servlet error: cannot find symbol symbol: class JDBCCategoryDataset location: class org.apache.jsp.JobsChart_jsp

PWC6197: An error occurred at line: 23 in the jsp file: /JobsChart.jsp PWC6199: Generated servlet error: cannot find symbol symbol: class JDBCCategoryDataset location: class org.apache.jsp.JobsChart_jsp

PWC6197: An error occurred at line: 23 in the jsp file: /JobsChart.jsp PWC6199: Generated servlet error: cannot find symbol symbol: class JFreeChart location: class org.apache.jsp.JobsChart_jsp

PWC6197: An error occurred at line: 23 in the jsp file: /JobsChart.jsp PWC6199: Generated servlet error: cannot find symbol symbol: variable PlotOrientation location: class org.apache.jsp.JobsChart_jsp

PWC6197: An error occurred at line: 23 in the jsp file: /JobsChart.jsp PWC6199: Generated servlet error: cannot find symbol symbol: variable ChartFactory location: class org.apache.jsp.JobsChart_jsp

PWC6197: An error occurred at line: 23 in the jsp file: /JobsChart.jsp PWC6199: Generated servlet error: cannot find symbol symbol: class ChartPanel location: class org.apache.jsp.JobsChart_jsp

PWC6197: An error occurred at line: 23 in the jsp file: /JobsChart.jsp PWC6199: Generated servlet error: cannot find symbol symbol: class ChartPanel location: class org.apache.jsp.JobsChart_jsp

PWC6197: An error occurred at line: 23 in the jsp file: /JobsChart.jsp PWC6199: Generated servlet error: cannot find symbol symbol: class ApplicationFrame location: class org.apache.jsp.JobsChart_jsp

PWC6197: An error occurred at line: 23 in the jsp file: /JobsChart.jsp PWC6199: Generated servlet error: cannot find symbol symbol: class ApplicationFrame location: class org.apache.jsp.JobsChart_jsp

PWC6197: An error occurred at line: 23 in the jsp file: /JobsChart.jsp PWC6199: Generated servlet error: cannot find symbol symbol: variable ChartUtilities location: class org.apache.jsp.JobsChart_jsp

note The full stack traces of the exception and its root causes are available in the GlassFish Server Open Source Edition 3.1.1 logs.}

i got these errors in my project please rectify

strong text