About chart ?

[SOYHU]

How i can develop the below chart by plot x and y axis as string(not number)values?

 

i would like to display string(not number) value on y axis, i fetch string column from database for plotting the graph, while i was running the report the error message be generated as below:

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ÂCompiling to file... C:YHU2.jasperE-commerce_Reporttest_graph.jasper -> C:YHU2.jasperE-commerce_Reporttest_graph.java

Errors compiling C:YHU2.jasperE-commerce_Reporttest_graph.jasper.

net.sf.jasperreports.engine.JRException:ÂErrorsÂwereÂencounteredÂwhenÂcompilingÂreportÂexpressionsÂclassÂfile: 1.ÂsoyhucolumnÂcannotÂbeÂresolved ÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂvalueÂ=Â(java.lang.Comparable)(soyhucolumn); ÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂ<-----------> 2.ÂCannotÂcastÂfromÂStringÂtoÂNumber ÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂvalueÂ=Â(java.lang.Number)(((java.lang.String)field_NAME.getValue())); ÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂ<----------------------------------------------------------->

 

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please advise me

Thanks in advanced.