Java 实例 - 获取链表的元素

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以下实例演示了使用 top() 和 pop() 方法来获取链表的元素：

/*
 author by itshubao.com
 Main.java
 */

import java.util.*;

public class Main {
   private LinkedList list = new LinkedList();
   public void push(Object v) {
      list.addFirst(v);
   }
   public Object top() {
      return list.getFirst();
   }
   public Object pop() {
      return list.removeFirst();
   }
   public static void main(String[] args) {
      Main stack = new Main();
      for (int i = 30; i < 40; i++)
         stack.push(new Integer(i));
      System.out.println(stack.top());
      System.out.println(stack.pop());
      System.out.println(stack.pop());
      System.out.println(stack.pop());
   }
}

以上代码运行输出结果为：

39
39
38
37