Java™ How to Program, Seventh Edition

13.10. Chained Exceptions

Sometimes a catch block catches one exception type, then throws a new exception of a different type to indicate that a program-specific exception occurred. In earlier Java versions, there was no mechanism to wrap the original exception information with the new exception’s information to provide a complete stack trace showing where the original problem occurred in the program. This made debugging such problems particularly difficult. Chained exceptions enable an exception object to maintain the complete stack-trace information. Figure 13.8 demonstrates chained exceptions.

Figure 13.8. Chained exceptions.

1 // Fig. 13.8: UsingChainedExceptions.java 2 // Demonstrating chained exceptions. 3 4 public class UsingChainedExceptions ...