Question

I created a A5 report in ireport and use in java application.
I change A5 to A4 format on runtime and View Page but when print Page output be A5 format.

following code:

        JasperDesign _des = JRXmlLoader.load("report1.jrxml");

        _des.setPageHeight(842);
        _des.setPageWidth(595);

        JasperReport _rep = JasperCompileManager.compileReport(_des);

        JasperPrint jasperPrint = JasperFillManager.fillReport(_rep, params, _data);

        JRViewer_com = new JRViewer(jasperPrint);

Answer 1

There must be something missing in your code that is not supplied in your question. When I created an example and ran it it works. The only change I made was I used the static method JasperViewer.viewReport(jasperPrint, true); to view the report.

public static void main(String[] args) throws JRException {
    File file = new File("C:\\Test\\src\\report1.jrxml");
    System.out.println("file = "+file.exists());
    JasperDesign _des = JRXmlLoader.load(file);

    _des.setPageHeight(842);
    _des.setPageWidth(595);

    JasperReport _rep = JasperCompileManager.compileReport(_des);
    JasperPrint jasperPrint = JasperFillManager.fillReport(_rep, new HashMap<String, Object>());
    JasperViewer.viewReport(jasperPrint, true);
}

If you could provide a small single java class that is runnable and reproduces the issue, I may be able to help more.