check if enum contains value

Java hidden box operation-enum and hidden box operation enum Enum, which is an enumeration type, has a similar type in each programming language. Because it is rarely used, every time I see enum, it will be daunting, because its syntax is really

/** * Determine whether the given object is an array: * Either an object array or a primitive array. @param obj the object to check */ Public Static Boolean IsArray (Object obj) { returnnull && obj.getclass (). IsArray (

What is an enumeration? Enumerations are new features introduced by JDK5. In some cases, the objects of a class are fixed and can be defined as enumerations. In practice, enumeration types can also be used as a specification to guarantee the safety

Blog (http://blog.csdn.net/livelylittlefish) Post the notes prepared by the author (@ Xiaoyu) on the relevant research and study content. You are welcome to correct them!   1. macro definition   # Define aspect_ratio 1.653 The macro definition

Enum class (msdn) Posted on ottox read (92) Comments (0 ){Open_link ('HTTP: // www.cnblogs.com/ottox/admin/editposts.aspx? Postid = 1402424 ')} "Rel =" nofollow "href =" http://writeblog.csdn.net/# "> edit {Addtowz( 1402424); Return false;} "Href ="

When the newly written Windows Service transmits data to the Web end, the data is empty or the service exception occurs. Check the cause carefully. The original data passed contains an enumerated field. By default, the basic type of each element in

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

Http://blog.sina.com.cn/s/blog_429fe72e010006u3.html[SerializableAttribute] [AttributeUsageAttribute (Attributetargets.enum, inherited = False)] [ComVisibleAttribute (True)]public class Flagsattribute:attributeBit fields are typically used for lists

The operation of an enum usually involves a bitwise operation (and, or, XOR), often using the FlagsAttribute custom attribute definition. Guidelines for FlagsAttribute and enums: FlagsAttribute Custom attributes are used for enumerations only when

Skills | design The operation of an enum usually involves a bitwise operation (and, or, XOR), often using the FlagsAttribute custom attribute definition. Guidelines for FlagsAttribute and enums:FlagsAttribute Custom attributes are used for