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The meaning of the keyword void in java

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Release: 2024-05-01 18:16:06
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The void keyword in Java indicates that a method does not return any value. It is used to define the return value type of the method. Features: 1. The void method does not use the return statement to return a value; 2. It can access and modify local variables; 3. It is suitable for auxiliary methods or handler methods that do not need to return a value.

The meaning of the keyword void in java

The meaning of the keyword void in Java

In Java, the void keyword indicates that a method does not return anything value. It is mainly used to define the return value type of a method.

Usage

The void keyword is placed before the return value type of the method declaration. For example:

<code class="java">public void printMessage() {
    System.out.println("Hello World!");
}</code>
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Features

  • void methods do not require a return statement to explicitly return any value.
  • void methods can access and modify local variables declared in the method.
  • The void keyword is useful for helper methods or handler methods that do not want to return any value.

Example

The following code example shows the use of a void method:

<code class="java">public class Main {
    public static void main(String[] args) {
        printMessage();
    }

    public static void printMessage() {
        System.out.println("Hello from void method!");
    }
}</code>
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Output:

<code>Hello from void method!</code>
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