2.1. When to Use Enumeration We can use Enumeration when we want to iterate over the elements of any legacy collection classes in a fail-safe manner. 2.2. Enumeration Example We can get the Enumeration object by
4、linked[lɪŋkt] v. 连接;串联(link 的过去分词) linked list : 链表 LinkedList 5、enumeration [ɪ,njuːmə’reɪʃən] n. 列举;[数] 计算;细目 6、concurrent [kən’kʌr(ə)nt] adj. 并发的;一致的;同时发生的;并存的 7、modification[,mɒdɪfɪ’keɪʃ(...
容器相关的操作及其源码分析 说明 1、本文是基于JDK 7 分析的。JDK 8 待我工作了得好好研究下。Lambda、Stream。 2、本文会贴出大量的官方注释文档,强迫自己...
This is the common base class of all Java language enumeration types. Float The Float class wraps a value of primitive type float in an object. InheritableThreadLocal<T> This class extends ThreadLocal to provide inheritance of values from parent thread to child thread: when a child thread is...
在Java编程中,经常会遇到需要判断某个值是否存在于一个固定的集合中的情况。为了解决这个问题,Java提供了枚举(Enumeration)类型。枚举类型是一种特殊的数据类型,用于表示一个固定的集合(也称为枚举常量)。 在本文中,我们将介绍如何使用Java枚举类型来判断一个值是否存在于一个枚举常量集合中,并提供相应的代码示例。
原文:docs.oracle.com/javase/tutorial/reallybigindex.html关闭 原文:docs.oracle.com/javase/tutorial/jndi/ldap/close.html正常的垃圾回收会在不再使用时删除 Context实例。被垃圾回收的Context实例使用的连…
enum (enumeration) 枚举enumerators 枚举成员、枚举器equal 相等equality 相等性equality operator 等号操作符error log 错误日志 (for database)escape code 转义码escape character 转义符、转义字符exclusive lock 排它锁 (for database)explicit transaction 显式事务 (for database)...
Whereas a class can inherit from only one superclass, a class canimplementas many interfaces as it chooses to. Using the examples from the previous discussion, theHashTableEnumeratorandVectorEnumeratorclasses both implement anEnumerationinterface that's specific to the characteristics of theHashTableand...
ArrayList:是新版本,线程不安全的,扩容机制为原来的1.5倍,不支持Enumeration迭代器 ArrayList只用:foreach和Iterator或ListIterator 只看,不改:foreach 看,并且删除:从前往后:Iterator 看,并且删除、插入,从前往后,或从后往前:ListIterator 如果需要再细化:
The CRLReason enumeration specifies the reason that a certificate is revoked, as defined in RFC 3280: Internet X.509 Public Key Infrastructure Certificate and CRL Profile. PKIXReason The PKIXReason enumerates the potential PKIX-specific reasons that an X.509 certification path may be invalid accordi...