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Avoid deprecated Class.newInstance in favor of constructor-based instantiation [SPR-14486] #19055

spring-projects-issues opened this issue Jul 19, 2016 · 0 comments


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@spring-projects-issues spring-projects-issues commented Jul 19, 2016

Juergen Hoeller opened SPR-14486 and commented

As of JDK 9, Class.newInstance() is deprecated in favor of Constructor.newInstance(), with the latter throwing InvocationTargetException instead of simply propagating user exceptions to the caller. Let's use this as an opportunity to revise our remaining use of Class.newInstance(), in particular our remaining use of BeanUtils.instantiate(Class) which is based on it (in contrast to BeanUtils.instantiateClass(Class which explicitly uses the default constructor).

Along the same line, Proxy.getProxyClass and XMLReaderFactory.createXMLReader are in JDK 9 now as well. While we have no immediate replacement for those yet, we seem to be able to keep using them under our conditions (within the same ClassLoader). Those spots need to be marked as @SuppressWarnings("deprecated") though in order for our build to work on JDK 9 (with -Werror).

Issue Links:

  • #17928 Compatibility with merged JDK 9 mainline
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