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This noncompliant code example declares a vararg method using Object. It accepts an arbitrary mix of parameters of any object type. Although Legitimate uses of such declarations have legitimate uses are rare (see exception below), those uses rarely arise.

ReturnType function(Object... args) { }

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This noncompliant code example declares a vararg method using a generic type parameter. It accepts a variable number of parameters that are all of the same object type. Again, although legitimate uses of such declarations have legitimate uses, those uses rarely ariseare rare.

<T> ReturnType function(T... args) { }

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Retrofitting old methods containing final array parameters with generically-typed varargs is not always a good idea. For example, given a method that does not accept an argument of a particular type, it could be possible to override the compile-time checking --- through the use of generic varargs parameters --- so that the method would compile cleanly rather than correctly causing a compile-time error.\[[Bloch 2008|AA. Bibliography#Bloch 08]\]. 

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DCL09-EX1: Varargs signatures using Object and imprecise generic types are only acceptable when the body of the method both uses no casts or auto-boxing, and also compiles without error. Consider the following example, which operates correctly for all object types and type-checks successfully.

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