Void In Java

Void In Java. The Void class is an uninstantiable placeholder class to hold a reference to the Class object representing the Java keyword void. Error: Unresolved compilation problems: The method tellItLikeItIs() is undefined for the type EnumTest.

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For example: See also: Java Programming/Keywords/return. As Java developers, we might have encountered the Void type at some occasion and wondered what was its purpose. Used at method declaration and definition to specify that the method does not return any type, the method returns void.

So far we've only written short programs that have a single class and a single method The Java library includes a Math class that provides common mathematical operations.

Void class is a placeholder which holds a reference to a class object if it represents void keyword.

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Void has some nuances to it that we will discuss in later episodes. Java supports native codes via the Java Native Interface (JNI). Void. public final class Void extends Object.