java - What is the safe way to get the array class name at runtime? -

here example code requires obtaining class name of array unknown @ runtime:

//for calling methods declared similar //  void method(string... values); //for primitive type have other overloads , following  //is generic classes   @suppresswarnings("unchecked") private static <t> void invokevaridic(method m, object host, t... values)      throws illegalaccessexception, illegalargumentexception,      invocationtargetexception, classnotfoundexception{      assert(values.length>0); //we assume users passes @ least 1 value     class<? extends t[]> c = (class<? extends t[]>)              class.forname("[l" + values[0].getclass().getname() + ";");     m.invoke(host, arrays.copyof(values, values.length,c)); } 

since type erasure nature type of values object[], cannot pass m.invoke because requires string[]. since forcing user pass @ least 1 value can use type of values[0] construct new array.

i don't know t[].class is.

i come above code depends on interpretation of array's name in byte code, safe? suggested way t[].class?

you can't sure values in values of type t, because type-erased arrays subject heap pollution, , should prepared deal classcastexception @ point cast. however, can array type particular object convoluted call array.newinstance:

class<?> arrayclass = array.newinstance(values[0].getclass(), 1).getclass();