stacks.java

来自「中文JAVA编程思想第二版,一本很好的JAVA入门书籍!」· Java 代码 · 共 25 行

//: c09:Stacks.java
// From 'Thinking in Java, 2nd ed.' by Bruce Eckel
// www.BruceEckel.com. See copyright notice in CopyRight.txt.
// Demonstration of Stack Class.
import java.util.*;

public class Stacks {
  static String[] months = { 
    "January", "February", "March", "April",
    "May", "June", "July", "August", "September",
    "October", "November", "December" };
  public static void main(String[] args) {
    Stack stk = new Stack();
    for(int i = 0; i < months.length; i++)
      stk.push(months[i] + " ");
    System.out.println("stk = " + stk);
    // Treating a stack as a Vector:
    stk.addElement("The last line");
    System.out.println(
      "element 5 = " + stk.elementAt(5));
    System.out.println("popping elements:");
    while(!stk.empty())
      System.out.println(stk.pop());
  }
} ///:~