Java supports single-line and multi-line comments very similar to C and C++. ![]() These reserved words may not be used as constant or variable or any other identifier names. The following list shows the reserved words in Java. Methods, variables, constructors can be defined inside enums as well. Note − Enums can be declared as their own or inside a class. The above example will produce the following result − Output ![]() This would make sure that it would not allow anyone to order any size other than small, medium, or large. With the use of enums it is possible to reduce the number of bugs in your code.įor example, if we consider an application for a fresh juice shop, it would be possible to restrict the glass size to small, medium, and large. The values in this enumerated list are called enums. Enums restrict a variable to have one of only a few predefined values. Java EnumsĮnums were introduced in Java 5.0. We will look into how to declare, construct, and initialize in the upcoming chapters. However, an array itself is an object on the heap. ![]()
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