Now, to print all enum values you'd just use something like: System.out.println(info); An alternative to using EnumSet would be to use GeneralInformation.values(), but that means you have to create a new array each time you call it, which feels wasteful to me.

2022年2月26日 · You can use name() to print the constant name of the enum: Returns the name of this enum constant, exactly as declared in its enum declaration. For example: String concatenatedNickNames = Arrays.stream(NickNames.values()) .map(NickNames::name) .collect(Collectors.joining(" ")); System.out.println(concatenatedNickNames );

2014年5月14日 · For enumerations, you can obtain an array of all the constants and loop over them very easily using code such as this: System.out.println("name="+value.name()); However, the Sensor class you link to isn't an enumeration, but contains a list of constants.

2024年10月4日 · In Java, Enumerations or Java Enum serve the purpose of representing a group of named constants in a programming language. Java Enums are used when we know all possible values at compile time, such as choices on a …

2024年7月8日 · An easy way to print all enum values in Java is by utilizing the values() method provided by the enum class. This method returns an array containing all the enum constants in the order they are declared.

2024年1月8日 · In this tutorial, we’ll learn about the various ways of implementing toString () on enum s in Java so that we can supply alternate or decorative names. 2. Default Behavior. All enum s implicitly extend the Enum class, so that’s where our enum will inherit its default toString () behavior from: return name; 3. Override toString () on enum Type.

In Java, an enum (short for enumeration) is a type that has a fixed set of constant values. We use the enum keyword to declare enums. For example, SMALL, MEDIUM, LARGE, EXTRALARGE . Here, we have created an enum named Size. It contains fixed values SMALL, MEDIUM, LARGE, and EXTRALARGE.

2016年1月16日 · Sometimes you want to simply print the enums to the console (or display them in a kind of UI). In the example above (Workday) you could simply use the name of the enumeration, although sometimes “TUESDAY” seems like shouting and “Tuesday” would be more preferred.

2025年2月20日 · In this article, we discussed various ways to iterate over an Enum using forEach, Stream, and the for loop in Java. If we need to perform any parallel operations, Stream is a good option. Otherwise, there’s no restriction on which method to use.

2013年9月19日 · %d format specifiers are not compatible with enum types unless used against the ordinal value. To invoke the enum's toString method (which uses the name field) you can use %s instead System.out.printf("%s, %s%n", fred, xx);