Show what is written by the following segment of code, given that item1, item2, and item3 are int variables, and stack is an object that fits our abstract description of a stack. Assume that you can store and retrieve variables of type int on stack. Show the results step by step based on the code

item1 = 3;

item2 =4;

item3 = 7;

stack.push(item2);

stack.push(item1*2);

stack.push(item2 + item3);

item2 = stack.top();

stack.push (item1*item3);

stack.push(item1);

stack.push(3);

item1 = stack.top();

stack.pop();

System.out.println(item1 + " " + item2 + " " + item3);

while (!stack.isEmpty())

{ item1 = stack.top();

stack.pop();

System.out.println(item1);

}