Enumeration接口定义 Enumeration接口与Iterator接口用法比较 一. 1.Enumeration接口定义 public interface Enumeration<E>实现 Enumeration 接口的对象,它生成一系列元素,一次生成一个.连续调用 nextElement 方法将返回一系列的连续元素. 例如,要输出 Vector<E> v 的所有元素,可使用以下方法: for (Enumeration<E> e = v.elements();
enumeration(枚举)是JDK1.5引入的新特性,放在java.lang包中. 1.枚举类方法介绍 package com.enums; public class TestEnum { public static void main(String[] args) { Season season = Season.autumn; System.out.println(season);//autumn System.out.println(season.compareTo(Season.au
Understanding the RelationshipType Enumeration [AX 2012] 3 out of 3 rated this helpful - Rate this topic Updated: January 28, 2012 Applies To: Microsoft Dynamics AX 2012 R2, Microsoft Dynamics AX 2012 Feature Pack, Microsoft Dynamics AX 2012 When you
If you want a data type that enumerates discrete values you should use a restriction of the schema type xsd:string, enumerating all the values as you would in a Java enum type. <xsd:simpleType name="IXLType"> <xsd:restriction base="
当用foreach遍历Collection时,如果对Collection有Add或者Remove操作时,会发生以下运行时错误: "Collection was modified; enumeration operation may not execute." 如下所示: [c-sharp] view plaincopy List<string> list = new List<string>(); for (int i = 0; i < 10; i++)
Implicit conversion from enumeration type 'enum CGImageAlphaInfo' to different enumeration type 'CGB 分类: iOS开发2013-11-28 15:55 745人阅读 评论(0) 收藏 举报 CGImageAlphaInfoCGContextRefCGBitmapContextCreatCGBitmapInfokCGBitmapByteOrderDe 在使用xcode5 sdk iOS7环境,创建
今天在使用foreach循环遍历list集合时,出现Collection was modified; enumeration operation may not execute.这个错误,查了半天才发现是当想要修改list集合时,不能使用foreach,因为foreach是取只读的,在取的时候数据不能变(包括修改,删除,添加等),所以只能用for循环.
Interface Enumeration<E> hasMoreElements() boolean hasMoreElements() 仅当此枚举对象包含至少一个以上元素为真:否则为假. nextElement() E nextElement() 此枚举的下一个元素. Throws:NoSunchException - if no more elements exist.