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This noncompliant code example throws undeclared checked exceptions. The undeclaredThrow() method takes a Throwable argument and invokes a function that will throw the argument without declaring it. Although undeclaredThrow() catches any exceptions the function declares that it might throw, it nevertheless throws the argument it is given without regard to whether the argument is one of the declared exceptions. This noncompliant code example also violates ERR07-J. Do not throw RuntimeException, Exception, or Throwable. However, because of exception ERR08-EX1EX0, it does not violate ERR08-J. Do not catch NullPointerException or any of its ancestors.
Any checked exception thrown by the default constructor of java.lang.Class.newInstance() is propagated to the caller even though Class.newInstance() declares that it throws only InstantiationException and IllegalAccessException. This noncompliant code example demonstrates one way to use Class.newInstance() to throw arbitrary checked and unchecked exceptions:
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