Class ExceptionHandler


  • public final class ExceptionHandler
    extends Object
    An ExceptionHandler represents a single handler covering a single instruction. It simply tells us what kind of exception to catch and where to dispatch the exception to. ExceptionHandlers are immutable. It is quite legal to save a reference to an exception handler and use it in any other context. We also treat arrays of ExceptionHandlers as immutable. Therefore the following code can be used to build an exception handler table that specifies two handlers covering an entire block of code:
     
       ExceptionHandler[] hs = {
         new ExceptionHandler(110, "Ljava.lang.NullPointerException;"),
         new ExceptionHandler(220, "Ljava.io.IOException;");
       };
       for (int i = 0; i < 100; i++) {
         handlers[i] = hs;
       }
     
    • Constructor Detail

      • ExceptionHandler

        public ExceptionHandler​(int handler,
                                String catchClass)
        Parameters:
        handler - the label for the handler code
        catchClass - the type of exception that should be caught (in JVM format), or null if all exceptions should be caught (as with 'finally')
    • Method Detail

      • getHandler

        public int getHandler()
        Returns:
        the label of the handler code
      • getCatchClass

        public String getCatchClass()
        Returns:
        the type of exceptions to be caught, or null if all exceptions should be caught
      • hashCode

        public int hashCode()
        Overrides:
        hashCode in class Object