Enumeration Java Example In this tutorial we will discuss about Java Enumeration. The Java programming language contains the enum keyword, which represents a special data type that enables for a variable to belong to a set of predefined constants. The variable must be equal to one of the values...
在Java 8之前,我们通常使用while循环和这两个方法来遍历Enumeration,示例如下: importjava.util.Enumeration;importjava.util.Vector;publicclassEnumerationExample{publicstaticvoidmain(String[]args){Vector<String>vector=newVector<>();vector.add("Apple");vector.add("Banana");vector.add("Orange");Enumeration<...
We use the enum keyword to define an enumeration in Java. It is a good programming practice to name the constants with uppercase letters. Simple exampleWe have a simple code example with an enumeration. Main.java enum Day { MONDAY, TUESDAY, WEDNESDAY, THURSDAY, FRIDAY, SATURDAY, SUNDAY } ...
Example 4 importjava.io.*;importjava.util.*;/** * The only element which is serialized is an ordinal identifier. Thus, * any enumeration values added in the future must be constructed AFTER the * already existing objects, otherwise serialization will be broken. * * Java 1.4 (old) */publ...
What is the difference between enum and constants in Java? An enum can, just like a class , have attributes and methods. The only difference isthat enum constants are public , static and final(unchangeable - cannot be overridden). An enum cannot be used to create objects, and it cannot ...
Enumeration Sets in JavaEnumeration sets are implemented as classes in the Java toolkit. Each of the values listed for a particular enumeration set is represented as a field of the corresponding class in the Java toolkit. Some examples are listed in the following table....
Example 1 Here, we are defining anenumnamedcolorswith the three constantsRED,GREENandBLUE, we are not initializing them with any value. Thus, constant will have values0,1and2. usingSystem;usingSystem.Text;namespaceTest{classProgram{//declaring enumenumcolors { RED, GREEN, BLUE };staticvoidMai...
For example, to print all elements of a Vector<E> v: for (Enumeration<E> e = v.elements(); e.hasMoreElements();) System.out.println(e.nextElement()); Methods are provided to enumerate through the elements of a vector, the keys of a hashtable, and the values in a hashtable. ...
For example, to print all elements of a Vector<E> v: for (Enumeration<E> e = v.elements(); e.hasMoreElements();) System.out.println(e.nextElement()); Methods are provided to enumerate through the elements of a vector, the keys of a hashtable, and the values in a hashtable. ...
All mapping rules used in Java class mapping apply to the Java enumeration. Example Java source code enum MyEnumeration { } UML model Example of Enumeration Related Pages:Activity AllFilter:Off No activities foundNo Magic, Inc. Copyright © 1998 – 2025 No Magic, Incorporated, a Dassault ...