[jboss-user] [Javassist] - ClassCastException when modifiying JOptionPane behaviour

Telcontar Thorongil [https://community.jboss.org/people/telcontarvi] created the discussion "ClassCastException when modifiying JOptionPane behaviour" To view the discussion, visit: https://community.jboss.org/message/725909#725909 -------------------------------------------------------------- I'm triying to modify the JOptionPane behaviour to log all the user responses. If do it when the class is loaded with HotsSapper is OK, but i can't do it whith the HotSwapper because the application it's launched by Java Web Start and i haven't be able to open the needed socket. If i try to modify the class before it's loaded i have an ClassCastException throwed by BasicOptionPaneUI. there is the code i use: public class Test2 {     public static void main(String[] args) throws Exception {         ClassPool cp = ClassPool.getDefault();         CtClass cc = cp.get("javax.swing.JOptionPane");         CtMethod[] methods = cc.getMethods();         for (CtMethod method : methods) {             if (method.getName().equals("showConfirmDialog")) {                 if(method.getLongName().equals("javax.swing.JOptionPane.showConfirmDialog(java.awt.Component,java.lang.Object,                               java.lang.String,int,int,javax.swing.Icon)")){                     String after = "System.out.println(\"User answered: \" + $_ );";                     method.insertAfter(after);                 }             }         }         try{             Class c=cc.toClass();             c.newInstance();         }catch(CannotCompileException ex){             ex.printStackTrace();         }         JOptionPane.showConfirmDialog(null,"Yer or Not?");     } } Why is this happening? how can i fix it? -------------------------------------------------------------- Reply to this message by going to Community [https://community.jboss.org/message/725909#725909] Start a new discussion in Javassist at Community [https://community.jboss.org/choose-container!input.jspa?contentType=1&...]