Subreports in Jasper Reports

Question

I have two tables to be printed in same page. Data for those tables will be supplied from a map from a custom data source. I need to implement it. I googled for implementing

Answer 1

If you have only one detail band and your subreportExpression is something like "SUBREPORT_1.jasper" you can use this to compile several subreports

   JRDesignBand jrBand = (JRDesignBand) jasperDesign.getDetailSection().getBands()[0];
   JRElement[] jrElements = jrBand.getElements();
   for (JRElement jrElement : jrElements) {
       if (jrElement instanceof JRDesignSubreport) {
       JRDesignSubreport subReportDesign = (JRDesignSubreport) jrElement;
       JRExpression jrExpression = subReportDesign.getExpression();
       String file = jrExpression.getText();
       file = file.substring(1, file.length()-8)+".jrxml";
       JasperCompileManager.compileReport(file);
       }
   }