Methods return values to signify failure or success or, at other times, to update the caller's objects or fields. Security risks can arise if return values are simply ignored or if suitable action is not taken on their receipt. Return values may be ignored intentionally or even unintentionally. For example, when getter methods that return a value are named after an action (such as ProcessBuilder.redirectErrorStream(boolean redirectErrorStream)), a programmer may not realize that a return value is expected. It is important to check the API documentation so that return values are not ignored.
...