Java™ How To Program (Early Objects), Tenth Edition

11.8 Chained Exceptions

Sometimes a method responds to an exception by throwing a different exception type that’s specific to the current application. If a catch block throws a new exception, the original exception’s information and stack trace are lost. Earlier Java versions provided 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. This made debugging such problems particularly difficult. Chained exceptions enable an exception object to maintain the complete stack-trace information from the original exception. Figure 11.7 demonstrates chained exceptions.

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 1   // Fig. 11.7: UsingChainedExceptions.java ...