Java代码获取链表元素的示例分享

实现思路:
    使用getFirst即可获取头部元素
	removeFirst即可获取头部元素同时移除头部元素
	addFirst添加元素

 
import java.util.*;
public class TestClass {
	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) {
	TestClass stack = new TestClass();
	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());
	}
}

-----运行以上代码,将输出以下信息----
39
39
38
37