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The Java type system, however, treats enumerations as a type separate from integers, and intermixing of enum and integer values is not allowed. In fact, an enum type in Java is actually a special compiler-generated class rather than an arithmetic type, and enum values behave as global pre-generated instances of that class. Enum types can have ...
Switch statements in Java can use byte, short, char, and int (not long) primitive data types or their corresponding wrapper types. Starting with J2SE 5.0, it is possible to use enum types. Starting with Java SE 7, it is possible to use Strings. [2] Other reference types cannot be used in switch statements. Possible values are listed using case ...
enum (added in J2SE 5.0) [4] A Java keyword used to declare an enumerated type. Enumerations extend the base class Enum. extends Used in a class declaration to specify the superclass; used in an interface declaration to specify one or more superinterfaces.
Class, Interface, Enum, Field, Method {@inheritDoc} Copies the description from the overridden method: Overriding Method: 1.4.0 {@link reference} Link to other symbol: Class, Interface, Enum, Field, Method {@linkplain reference} Identical to {@link}, except the link's label is displayed in plain text than code font Class, Interface, Enum, Field ...
This is a list of data types of the Standard Libraries as defined in the ECMA-335 standard. ... System.Enum enumeration mscorlib 2.0.x.x DBNull System System.Object class
Java compilers do not enforce these rules, but failing to follow them may result in confusion and erroneous code. For example, widget.expand() and Widget.expand() imply significantly different behaviours: widget.expand() implies an invocation to method expand() in an instance named widget , whereas Widget.expand() implies an invocation to ...
When an enumeration is used in an ordered list context, we impose some sort of ordering structure requirement on the index set. While we can make the requirements on the ordering quite lax in order to allow for great generality, the most natural and common prerequisite is that the index set be well-ordered. According to this characterization ...
Java enumerations can be public static enum{enumName1,enumName2} and are used like classes. Another way is to make another class that extends java.lang.Enum<E>) and may therefore define constructors, fields, and methods as any other class.