1. if you push the objects x , y , and z onto an initially empty stack, in what order will three consecutive pop operations remove them from the stack? z, y, x.3. consider the following java statements, assuming that mystack is a class that implements the interfacestackinterface: int n = 4; stackinterface stack = new mystack< > (); while (n > 0){stack. push(n); n--; } // end whileint result = 1; while (! stack.{int integer = mystack. pop(); result = result * integer; } // end whilesystem. out. println("result = " + result); a. what value is displayed when this code execute