As we can see from the above example, we use the enum name to access the constant values. Also, we can create variables of enum types. For example, Size pizzaSize; Here, pizzaSize is a variable of the Size type. It can only be assigned with 4 values. pizzaSize = Size.SMALL; pizza...
As we delve deeper into the topic, we will shed light on the specifics of Java enums, particularly focusing on enums with values. Let’s embark on this exciting journey into the realm of Java enum and see how it plays a crucial role in the broader field of software engineering. Delving...
By default,enums don’t require constructordefinitions and their default values are always the string used in the declaration. Though, you can give define your own constructors to initialize the state of enum types. For example, we can addangleattribute to direction. All directions have some an...
Creategetter methodsso we can access any of the values assigned to a particular enum constant Create areverse lookupmethod so we can get the enum constant from any given enum value assigned to it 2. Example of Enum with Multiple Values In the given example, we are creating an enumAccountSta...
Example: package com.explainjava; public enum Color { RED (1), GREEN (2), BLUE (3); private final int value; Color(int value) { this.value = value; } public static Color valueOf(int value) { for (Color color : values()) { ...
Enum is introduced in Java 5 version, Before Java 5 was introduced, we have to write our constants to handle enum functionality as follows. Enum can have a string of values or an integer only. publicclassMonthsConstants{publicstaticfinalStringJAN="1";publicstaticfinalStringFEB="2";..}public...
for(SexEnum sexEnum : SexEnum.values()){ if(StringUtils.equals(code, sexEnum.getCode())){ return sexEnum; } } return null; } 1. 2. 3. 4. 5. 6. 7. 8. 以这种方案实现时,需要在每个枚举类中都定义类似上述结构的方法。当项目中的枚举类较多时,显得代码冗余。
publicclassEnumExample{publicstaticvoidmain(String[]args){Season[]seasons=Season.values();for(Seasonseason:seasons){System.out.println(season);}}} 1. 2. 3. 4. 5. 6. 7. 8. 9. 上面的代码中,我们首先调用Season.values()方法获取Season枚举类型中的所有值,然后使用for循环遍历这些值并输出。运行这...
};publicstatichr.test.Color[] values();//实现Enum类的抽象方法publicstaticcom.dxz.enumtest.Color valueOf(java.lang.String arg0); } 下面我们就详细介绍enum定义的枚举类的特征及其用法。(后面均用Color举例) 1、Color枚举类就是class,而且是一个不可以被继承的final类。其枚举值(RED,BLUE...)都是Color...
Interfaces can define multiple methods that enums must implement, ensuring they adhere to a specific contract. Lets expand our example with an interface `Shape` that requires enums to provide a method to calculate area: ```java public interface Shape { ...