PDF image rendering in java swing

Question

I am using JPedal free version jar to render PDF in my java swing program. The normal PDF is getting rendered properly but while rendering the PDF image(Image file converted to PDF file) the quality drops considerably(not readable at all).

Example code :

public OpenViewer() {

    //create and initialise JPedal viewer component
    final Viewer myViewer =new Viewer();
    myViewer.setupViewer();

    //code to open when required
    final File file=null; //example is commented out below
    final InputStream stream = null;

    //open the stream or File
    try {
       file = new File("/Users/markee/Desktop/myfile.pdf"); // This PDF is converted from tiff 

    } catch (Exception e) {
        e.printStackTrace();
    }



    if(file!=null) {
        myViewer.executeCommand(Commands.OPENFILE, new Object[]{file});
    }



}