How to return nothing in java?

In Java, a null value can be assigned to an object reference of any type to indicate that it points to nothing. The compiler assigns null to any uninitialized static and instance members of reference type. In the absence of a constructor, the getArticles() and getName() methods will return a null reference.

Can u return nothing in Java?

In Java, what does a return statement followed by nothing do? – Quora. , has extensively studied and applied different languages for more than 15 years. You can only use return without any expression following it in a void method. It serves as an immediate termination point for the method.

How do I return nothing from int?

The correct way to indicate that a function does not return a value is to use the return type “void”. ( This is a way of explicitly saying that the function returns nothing. ) If no return type is given, the compiler will normally assume the function returns an int.

How do you return nothing in a function?

There is no such thing as “returning nothing” in Python. Every function returns some value (unless it raises an exception). If no explicit return statement is used, Python treats it as returning None .

What does empty return mean in Java?

An empty return statement is acceptable within a method with a void return type because it doesn’t return any value. class A { public void message() { System.

Is it OK to return null?

Returning null is usually the best idea if you intend to indicate that no data is available. An empty object implies data has been returned, whereas returning null clearly indicates that nothing has been returned.

What should I return instead of NULL?

you can usually simply return an empty object instead of null , and it will work fine, without special handling. In these cases, there’s usually no need for the caller to explicitly handle the empty case.

Does return type void?

______________ have the return type void. Explanation: Constructor creates an Object and Destructor destroys the object. They are not supposed to return anything, not even void. … Explanation: void fundamental type is used in the cases of a and c.

Which does not return a value?

Void functions are created and used just like value-returning functions except they do not return a value after the function executes.

What is return in Java?

Java return keyword is used to complete the execution of a method. The return followed by the appropriate value that is returned to the caller. This value depends on the method return type like int method always return an integer value.

Does a function have to return something?

NO, a function does not always have to have an explicit return statement. If the function doesn’t need to provide any results to the calling point, then the return is not needed.

Is return the same as return None?

Yes, they are all the same. We can review the interpreted machine code to confirm that that they’re all doing the exact same thing. They each return the same singleton None — There is no functional difference.

What happens when a function doesn’t have a return statement?

If no return statement appears in a function definition, control automatically returns to the calling function after the last statement of the called function is executed. In this case, the return value of the called function is undefined. … If a return value isn’t required, declare the function to have void return type.

How do I fix a missing return in Java?

In order to solve the missing return statement error, we simply need to add the return statement to the method just like to the one we did in case one. So, we will return the some value of the same type which we used before the name like as: public static String checkNumber( int number) {

What is the return type () method?

A method returns to the code that invoked it when it completes all the statements in the method, reaches a return statement, or throws an exception, whichever occurs first. You declare a method’s return type in its method declaration. Within the body of the method, you use the return statement to return the value.

What is Java 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++.