Java Programming/Keywords/void. 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++..
Just so, why do we use void in Java?
Void is used when you are creating a class that will not return any value. Java always needs to know what to expect. So if you will get a string after to perform the action you would need to label string, if you expect a number you would label int, double, or whatever type of number will come back .
Beside above, what is the difference between public static void and public void in Java? Public void : Used when you don't have to create an object and have no return. Public static void: Used when you need to create an object in the class itself . Public 'return Type' (Public int, Public String, Public double): This is used when you need to return something.
Thereof, why is main public static void in Java?
Java program's main method has to be declared static because keyword static allows main to be called without creating an object of the class in which the main method is defined. If we omit static keyword before main Java program will successfully compile but it won't execute.
What are void methods?
The void Keyword This method is a void method, which does not return any value. Call to a void method must be a statement i.e. methodRankPoints(255.7);. It is a Java statement which ends with a semicolon as shown in the following example.
Related Question Answers
What do u mean by void?
If you describe a situation or a feeling as a void, you mean that it seems empty because there is nothing interesting or worthwhile about it. Something that is void or null and void is officially considered to have no value or authority. The original elections were declared void by the former military ruler.Is Main a keyword in Java?
Main is not a keyword in Java. When you try to execute a java code using "java" command, the runtime will load the public class that you are trying to execute and then call the main method defined in the class. The runtime knows that "main" is the method to look for as it is designed that way.What is main in Java?
A Java application is a public Java class with a main() method. The main() method is the entry point into the application. The signature of the method is always: public static void main(String[] args) Command-line arguments are passed through the args parameter, which is an array of String s.What is the purpose of void?
Void functions are created and used just like value-returning functions except they do not return a value after the function executes. In lieu of a data type, void functions use the keyword "void." A void function performs a task, and then control returns back to the caller--but, it does not return a value.Is void a keyword in C?
void (C++) When used as a function return type, the void keyword specifies that the function does not return a value. When used for a function's parameter list, void specifies that the function takes no parameters. You cannot declare a variable of type void.Is private a keyword in Java?
private is a Java keyword which declares a member's access as private. That is, the member is only visible within the class, not from any other class (including subclasses). The visibility of private members extends to nested classes.Is void a data type in Java?
void is not a valid type. However, void is a valid keyword used to indicate that a method does not return a value. Contrast that to the Integer JavaDoc: The Integer class wraps a value of the primitive type int in an object.What means public static?
public means that the method is visible and can be called from other objects of other types. static means that the method is associated with the class, not a specific instance (object) of that class. This means that you can call a static method without creating an object of the class.What is a static method?
In Java, a static method is a method that belongs to a class rather than an instance of a class. The method is accessible to every instance of a class, but methods defined in an instance are only able to be accessed by that member of a class.Can we override static method?
Static methods cannot be overridden because they are not dispatched on the object instance at runtime. The compiler decides which method gets called. Static methods can be overloaded (meaning that you can have the same method name for several methods as long as they have different parameter types).What is difference between final and static?
The difference between static and final in java is that static is a keyword in java that is used to define the class member that can be used independently of any object of class whereas final keyword in java is used to declare a constant variable that cannot be overridden and a class that cannot be inherited.Can we override main method?
Well, you can call it just like any other method. In short, main method can be overloaded but cannot be overridden in Java. That's all about overloading and overriding main method in Java. Now you know that its possible to overload main in Java but its not possible to override it, simply because its a static method.Why we Cannot override static method?
Static methods cannot be overridden because method overriding only occurs in the context of dynamic (i.e. runtime) lookup of methods. Static methods (by their name) are looked up statically (i.e. at compile-time). Method overriding happens in the type of subtype polymorphism that exists in languages like Java and C++.What is static in Java?
In Java, a static member is a member of a class that isn't associated with an instance of a class. Instead, the member belongs to the class itself. As a result, you can access the static member without first creating a class instance. The value of a static field is the same across all instances of the class.What is super keyword in Java?
super is a keyword. It is used inside a sub-class method definition to call a method defined in the super class. Private methods of the super-class cannot be called. Only public and protected methods can be called by the super keyword. It is also used by class constructors to invoke constructors of its parent class.What is private static in Java?
"private" is an access specifier. It tells you that the member is only visible inside the class - other classes can't access the private members of a class. "static" means that the variable is a class-level variable; there's only one variable, which is shared by all instances of the class.What is return in Java?
return is a reserved keyword in Java i.e, we can't use it as an identifier. It is used to exit from a method, with or without a value. Methods returning a value : For methods that define a return type, return statement must be immediately followed by return value.What is a void in Java?
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++.What is argument in Java?
Argument vs Parameter in Java. Argument. An argument is a value passed to a function when the function is called. Whenever any function is called during the execution of the program there are some values passed with the function. These values are called arguments. 
