Reference: https://g.co/kgs/G9Ezjv5 이펙티브 자바 조슈아 블로치의 책 www.google.com https://docs.oracle.com/javase/8/docs/api/java/util/Stack.html#push-E- Stack (Java Platform SE 8 ) The Stack class represents a last-in-first-out (LIFO) stack of objects. It extends class Vector with five operations that allow a vector to be treated as a stack. The usual push and pop operations are provided, as well as a metho..
