Web Reference: An enum type is a special data type that enables for a variable to be a set of predefined constants. The variable must be equal to one of the values that have been predefined for it. In this tutorial, we’ll learn what Java enums are, what problems they solve, and how some of their design patterns can be used in practice. Java 5 first introduced the enum keyword. It denotes a special type of class that always extends the java.lang.Enum class. For the official documentation on usage, we can head over to the documentation. Constan... W3Schools offers free online tutorials, references and exercises in all the major languages of the web. Covering popular subjects like HTML, CSS, JavaScript, Python, SQL, Java, and many, many more.
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Java Tutorial 20 Enums And Net Worth 2026: Salary, Income & Wealth Net Worth & Biography
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Last Updated: April 7, 2026
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