stackl.java

Java编程思想 第九课 全源码

//: c09:StackL.java
// From 'Thinking in Java, 2nd ed.' by Bruce Eckel
// www.BruceEckel.com. See copyright notice in CopyRight.txt.
// Making a stack from a LinkedList.
import java.util.*;
import com.bruceeckel.util.*;

public class StackL {
  private static LinkedList list = new LinkedList();

  public void push(Object v) {
    list.addFirst(v);
    //print();
  }
  /*public static void print(){
  *	Object[] al = list.toArray();
  * System.out.println(al);
  }*/
  public Object top() { return list.getFirst(); }
  public Object pop() { 
    return list.removeFirst(); 
  }
  public static void main(String[] args) {
    StackL stack = new StackL();
    for(int i = 0; i < 10; i++)
      stack.push(Collections2.countries.next());

//    Arrays2.print(list);
		System.out.println(stack.list);
    //System.out.println(stack.top());
    //System.out.println(stack.top());
    System.out.println(stack.pop());
    System.out.println(stack.pop());
    System.out.println(stack.pop());
    System.out.println(stack.list);
  }
} ///:~