undefined behavior - Java list.contains returning false, should be true -


this question has answer here:

okay, trying conditional checks , noticed returned false.... i'm missing?

int test = 1;  int[] testing= {1,3};  system.out.println(arrays.aslist(testing).contains(test) );  //false???

arrays.aslist generic method generic type variable used in vararg parameter. primitive types don't work generics.

therefore, after 

arrays.aslist(testing)

the list returned contains single element, array of type int.

your test pass if testing declared integer[].


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