Java Enumeration Type understanding

Enum Format Understanding

The format of an enum can be seen as a class keyword

The definition format for class is as follows:

public class abc{

}

The enum is defined in the following format:

public enum ABC {

}

where Enum is referenced

An enum can be defined individually as an enumeration class

Can also be a field of a class

Used to verify the type of behavior, not in these categories, will be an error

The problem found

If you call return in the case statement, the compiler complains that the default statement is missing, and the validation finds and descriptions do not match. 19.3 knots

When validating the mysteries of values, the error "Cannot run Program" JAVAP ": CreateProcess error=2" 19.4 knots

Private random Rand = new random (+); Rand.nextint (values (). length) does not understand

Although the enum is a fairly short class, you will find in this chapter that it eliminates a lot of duplicated code. Don't understand section 19.6

class<? Extends food> kind 19.7 knots

Java Enumeration Type understanding