To ensure a Java class is executable by the Java Virtual Machine (JVM), it must include a specific method signature known as the main method. The correct signature is "public static void main(String[] args)."
This method serves as the entry point for the application, which means that when you run the class, the JVM looks for this method to begin executing the program.
The 'public' keyword allows this method to be accessible from anywhere, which is crucial since the JVM needs to call it from outside the class. 'static' indicates that this method belongs to the class itself rather than an instance of the class. This is important because the JVM does not create an instance of the class to execute the main method; it simply calls it directly. The 'void' return type signifies that this method does not return any value. Lastly, 'String[] args' is used to accept command-line arguments, allowing users to pass strings of input to the program when it is executed.
In contrast, other options, while they might represent methods or functions, do not provide the correct structure that the JVM requires to locate the entry point for execution. For example, an option may suggest alternative method names or incorrect specifications that do not align with the required syntax