java - The var args parameters should be last in parameter list -

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• why varargs should last in method signature? 6 answers

public void test(int... integers, string str) { // error    ...   } 

error:

the variable argument type int of method test must last parameter.

public void test(string str, int... integers) {} 

it works well. there reason this?

well, consider method signature:

public void test(int... integers, float val, float val2) 

now, when invoke method:

test(2, 3, 4, 5, 6, 7); 

how compiler decide when stop adding arguments int... type parameter? remember, arguments evaluated left-to-right in java. why var-args should @ end. so, compiler can first assign fixed parameters, , rest of arguments, go var-args.