enumeration class

Today, in the work of the problem, to render all the enumeration elements on the foreground page, but the foreground page uses velocity, so you need to put the enumeration elements in the map, and then render in the foreground. It is not possible to

I. concept in some cases, the objects of a class are limited and fixed. For example, a seasonal class has only four objects. Such instances are finite and fixed classes, it is called an enumeration class in Java. Manual Implementation of enumeration

3.7 Enum TypesIn addition to the numerical data and text data we introduced before, in the real world, often encounter such a kind of data: a single choice of answer can only be a, B, C, D four one of the options; the color of the traffic lights can

Java Training, Android training, iOS training,. NET training, look forward to communicating with you! JDK1.5 new Features:Why new features are present:New technologies are emerging to address old problems, and the Java language improves developer

3.7 Enum TypesIn addition to the numerical data and text data we introduced before, in the real world, often encounter such a kind of data: a single choice of answer can only be a, B, C, D four one of the options; the color of the traffic lights can

Java JDK1.5 New features – Enumerations I. Enumeration definition Definition: An enumeration is a special class defined using an enum declaration, but it does not inherit from the Java.lang.Object class, which inherits from the Java.lang.enum class,

1. Enhanced for Loopthe reason for introducing an enhanced for loop : In previous versions of JDK5, iterating over the elements in an array or collection requires first getting the length of the array or the iterator of the collection, which is

What is an enumeration typeIf you define a class to complete enterprise employee information, employee information includes information such as name, age, and position (three roles for the worker, manager, and Boss), complete with the following code:

1. The role of static import: Simplify writingStatic import can act on all static members of a classStatic import Format: import static package name. Class NameThings to keep in mind when importing statically:1. If a statically imported member has

The previous chapter, customizing the enumeration class, is super troublesome.So, Java gives an enumeration class: Class Enum>　　Precautions Defining enum classes to use the keyword enum All enum classes are subclasses of enum The

1, Reflection (class loading overview and loading time) A: Overview of loading classes When a program wants to use a class, if the class has not yet been loaded into memory, the system initializes the class by loading,

Enumerate classes How to customize enum classesCustom enumeration classes required before JDK1.5JDK 1.5 New enum keyword is used to define enum classesIf the enumeration has only one member, it can be implemented as a singleton patternEnumerates

An explanation of the enumeration types in Java:Simple example: Public enum color{ red,blue,black,yellow,green } Complex examples (with custom construction methods and types) Public enumenumtest {FRANK ("The given name of me"), LIU ("The

If the object of a class is finite and fixed, such as the seasonal class, it has only 4 objects, such as a finite and fixed class, which we have in Javais called an enumeration class.The enumeration class is new to Java 5, which uses the enum

Java Enumeration Classes(2009-01-13 11:37:01)reproduced Tags: java enum enumeration it Category: Programming 1. Create one of the simplest enumeration typesCreating an enumeration type to use the enum keyword

Enum class1 PackageCom.yeepay.sxf.euma;2 /**3 * Enumeration that represents the week4 * @authorSXF5 *6 */7 Public enumWeek {8 Monday,9 Tuesday,Ten Wednesday, One Thursday, A Friday, - Saturday, - Sunday, the -}View CodeTest class1

Example: public enum EnumTest {        FRANK("The given name of me"),        LIU("The family name of me");        private String context;        private String getContext(){        return this.context;        }  

Example:public enum Enumtest {FRANK ("The given name of Me"), LIU ("The family name of Me");     Private String context;     Private String GetContext () {return this.context;     } Private Enumtest (String context) {This.context = context; public

The enumeration type is a new feature of the JDK5.0. Sun introduced a new keyword enum to define an enumeration class. The following is a definition of a typical enumeration type: Java code public enum color{Red,blue,black,yellow,green} Obviously,

In actual programming, there are often such "datasets", whose values are stable in the program, and the elements in the "dataset" are limited.For example, from Monday to Sunday, seven data elements formed the "data set" of the week, with four data