WebA switch statement transfers control to one of several statements or expressions, depending on the value of its selector expression. In earlier releases, the selector …
enum和switch case结合使用 - 简书
Web4 nov. 2024 · 11. 说明: 1 switch语句中expression支持的类型为: byte,short,int,char,String, 枚举, 但是不支持表达式 如 num>0. 2 switch语句可以有多个case语句, 但是每个case后面要有一个比较值和冒号. 3 switch语句遇到break会终止语句. 每个case的语句后break为可选, 如果没有break,会造成穿透效果 ... Web8 feb. 2024 · Java enums are more powerful than C/C++ enums. In Java, we can also add variables, methods, and constructors to it. The main objective of enum is to define our own data types (Enumerated Data Types). Declaration of enum in Java: Enum declaration can be done outside a Class or inside a Class but not inside a Method. Java. do you need a comma before the word too
Java Enums Enum Types - Code Leaks
Web25 oct. 2024 · In these cases, you would want to use an enum to store data. Enums are declared using the “ enum ” type. Here’s the syntax of the “ enum ” keyword: enum name { VALUE1, VALUE2, VALUE3 } Let’s break down this syntax: enum tells our program we want to declare an enumeration. name is the name of our enum. VALUE1, VALUE2, … WebThere are some predefined methods in enum classes that are readily available for use. 1. Java Enum ordinal () The ordinal () method returns the position of an enum constant. For example, ordinal (SMALL) // returns 0. 2. Enum compareTo () The compareTo () method compares the enum constants based on their ordinal value. Web11 apr. 2024 · 实际上在使用关键字enum创建枚举类型并编译后，编译器会为我们生成一个相关的类，这个类继承了Java API中的java.lang.Enum类，也就是说通过关键字enum … clean out the fridge gif