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Definition and Usage. The void keyword specifies that a method should not have a return value. More Examples. Tip: If you want a method to return a value, you can use a primitive data type (such as int, char, etc.) instead of void, and use the return keyword inside the method: Example.
Sep 22, 2023 · Void Methods in Java. The void method is a method that does not return any value. It is used to perform some action or operation but does not return any data. Syntax: public void methodName (parameter1, parameter2, …) { // body of the method. // do some operations here. // … } Example of Java void Method. Java. import java.io.*; .
Void: the type modifier void states that the main method does not return any value. All parameters to a method are declared inside a prior of parenthesis. Here String args[ ] declares a parameter named args which contains an array of objects of the class type string.
Jan 8, 2024 · Since JDK 1.1, Java provides us with the Void type. Its purpose is simply to represent the void return type as a class and contain a Class<Void> public value. It’s not instantiable as its only constructor is private. Therefore, the only value we can assign to a Void variable is null.
Jan 16, 2020 · 1. What does void mean in Java? In Java, void keyword is used with the method declaration to specify that this particular method is not going to return any value after completing its execution. We cant assign the return type of a void method to any variable because void is not a data type. 2. Example. Let’s see an example of void keyword usage.
java.lang.Void is analogous to java.lang.Integer. Integer is a way of boxing values of the primitive type int . Void is a way of boxing values of the primitive type void .
Aug 21, 2019 · In Java, the void keyword is used to indicate a method that does not return any value. For example: For example: public void doSomething() { // do something // no return }
The Void class is an uninstantiable placeholder class to hold a reference to the Class object representing the Java keyword void.
Sep 13, 2023 · Java.lang.Void class is a placeholder that holds a reference to a class object if it represents a void keyword. It is an uninstantiable placeholder. Well, uninstantiable means that this class has a private constructor and no other constructor that we can access from outside.
Jun 12, 2019 · void is a Java keyword. Used at method declaration and definition to specify that the method does not return any type, the method returns void . It is not a type and there is no void references/pointers as in C/C++.
