The "destructive" algorithms contained in this class, that is, the algorithms that modify the collection on which they operate, are specified to throw UnsupportedOperationException if the collection does not support the appropriate mutation primitive(s), such as the set method. These algorithms may,...
The Collections utility class consists exclusively of static methods that operate on or return collections. It contains polymorphic algorithms that operate on collections, "wrappers", which return a new collection backed by a specified collection, Some useful method in Collections class: Let's take th...
In the following table, boldface type indicates a method that may be useful in NAS 4.0 applications. Method Description createDataConn( ) Creates a new data connection object and opens a connection to a database or data source. createDataConnSet( ) Creates a collection used to dynamically ...
after viewing, the controller would communicate with the business logic, which would then get in touch with the Java POJO class to retrieve the data. The phrase "business logic" describes the comprehensive collection of guidelines that specify how data will be handled ...
Interface IRelationshipClassCollection All Superinterfaces: Serializable public interfaceIRelationshipClassCollection extendsSerializable Provides access to members that return the memory relationship classes defined for standalone tables or layers in ArcMap. ...
java.util Contains the collections framework, legacy collection classes, event model, date and time facilities, internationalization, and miscellaneous utility classes (a string tokenizer, a random-number generator, and a bit array). java.util.concurrent Utility classes commonly useful in concurrent prog...
java.net 为实现网络应用程序提供类。 java.rmi.server 提供支持服务器端 RMI 的类和接口。 java.security 为安全框架提供类和接口。 java.sql 提供使用 JavaTM 编程语言访问并处理存储在数据源(通常是一个关系数据库)中的数据的 API。 java.util 包含collection 框架、遗留的 collection 类、事件模型、日期...
该方法用于哈希查找,重写了equals方法一般都要重写hashCode方法。这个方法在一些具有哈希功能的Collection中用到。 一般必须满足obj1.equals(obj2)==true。可以推出obj1.hash- Code()==obj2.hashCode(),但是hashCode相等不一定就满足equals。不过为了提高效率,应该尽量使上面两个条件接近等价。7.wait方法 ...
Java.Time.Zone Java.Util Java.Util.Concurrent Java.Util.Concurrent.Atomic Java.Util.Concurrent.Locks Java.Util.Functions Java.Util.Jar Java.Util.Logging Java.Util.Prefs Java.Util.RandomGenerators Java.Util.Regex Java.Util.Streams Java.Util.Streams ...
Java内部类(Inner Class)详解 简单的说,内部(inner)类指那些类定义代码被置于其它类定义中的类;而对于一般的、类定义代码不嵌套在其它类定义中的类,称为顶层(top-level)类。对于一个内部类,包含其定义代码的类称为它的外部(outer)类。 1Static member class(静态成员类)...