Methods must not throw RuntimeException or Exception. Handling these exceptions requires catching RuntimeException, which is disallowed by rule ERR14-J. Do not catch RuntimeExceptionNullPointerException. Moreover, throwing a RuntimeException can lead to subtle errors, for example, a caller cannot examine the exception to determine why it was thrown, and consequently cannot attempt recovery.
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A calling method must violate also rule ERR14-J. Do not catch RuntimeExceptionNullPointerException to determine if the RuntimeException was thrown.
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ERR11-J. Restore prior object state on method failure 06. Exceptional Behavior (ERR) ERR14-J. Do not catch RuntimeExceptionNullPointerException