java enum valueof

voidMain (string[] args) {9 /**Ten * Values of the Test enumeration () One * A */ -String s = color.getvalue (0). GetDesc (); -System.out.println ("Gets the value:" +s); the - - - /** + * Test enumeration of valueof, the value inside can be the name of the enumeration constant that you define - * Where the valueof method converts the name of a string to an enumeration i

Reference 55049192This explains why an enumeration class cannot be inherited: it has inherited the parent enum class, and its parent implements the serializable interface, which means that all enum classes implement serializationThe Enum class also cannot be inherited for the following reasons:The public enum class nam

In programming languages, we are exposed to enum types, and we usually have poor enumerations to implement some limitations. Java is no exception. The enumeration type in Java is enum, and this article provides some more in-depth analysis of enumerations.What is an enumEnum is an attribute introduced from

difference in order of the two enumeration values. Of course, the premise is that two enumeration values must belong to the same enumeration class, otherwise a classcastexception () exception will be thrown. (Visible source code)Color.RED.compareTo (Color.Blue); return result-1(3) The values () method: A static method that returns an array that contains all the enumeration values.Color[] Colors=color.values ();for (Color c:colors) {System.out.print (c+ ",");}//return Result: Red,blue,black Yell

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 of program parameters. Enumerations have the following characteristics: The levels of enumerations and classes and interfaces in Java are the same. Enumerations, like classes, have their own prop

Objective In daily programming, there are often such "datasets," whose values are stable in the program, and the elements in the dataset are finite. For example, from Monday to Sunday, seven data elements constitute a week of "data sets", Four seasons of four data elements constitute the "dataset". How do you better use these "datasets" in Java? So the enumeration came in handy. An enumeration is actually a type, like int, char, which restricts inpu

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 "not playing as usual! 　　 The

The enum enum type of Java finally appeared in j2se1.5. Before thought it was just a chicken, dispensable. After all these years, without it, don't everyone have a good one? Today, "Thinking in Java" 4th edition, there is a sentence "sometimes precisely because of it, you can" elegant and clean "to solve the problem. E

When I recently discussed the issue with my colleagues, my colleague suddenly mentioned why the constant values defined in Java do not take the ENMU enumeration type and are defined by the public final static type. We used to be defined in this way, rarely using the enum definition, so also did not pay attention to, in the face of the problem, it is still a little unclear why there is such a definition. If

The java keyword enum does not recognize other solutions. The java keyword enum does not. The myeclipse java project copied from someone else opened a large film marked with red. After careful reading, it turned out that the enum

The ValueOf () method is used to return the value of the native number object for a given parameter, which can be a native data type, string, and so on.This method is a static method. The method can receive two parameters one is a string, and the other is the cardinality.GrammarThe method has the following syntax formats:Staticinteger valueOf(int i)staticinteger valueOf