从数组创建向量

//来自 nowjava

//package com.nowjava;

import java.util.*;


public class Main {

    public static void main(String[] argv) {

        Object[] array = new String[] { "1", "abc", "level", null,

                "nowjava.com", "asdf 123" };

        System.out.println(createVector(array));

    }


    public static Vector createVector(Object[] array) {

        return appendInto(new Vector(), array);

    }


    public static Vector createVector(Enumeration e) {

        Vector result = new Vector();/* 来 自 时 代 J a v a 公 众 号*/

        while (e.hasMoreElements())

            result.addElement(e.nextElement());

        return result;

    }


    public static Vector appendInto(Vector v, Object[] array) {

        appendInto(v, array, array.length);

        return v;

    }


    public static Vector appendInto(Vector v, Object[] array, int quantity) {

        v.ensureCapacity(v.size() + quantity);

        for (int i = 0; i < quantity; i++) {

            v.addElement(array[i]);

        }


        return v;

    }