Without a return value return works a lot like break in a loop and simply exits the code in question.
What does an empty return do in Java?
Return in a void function is used to escape the control flow before the natural end of a function. As such, it needs to be a valid statement. Going out of your way to explicitly forbid it as the final statement in a function serves no purpose except to break existing code.
What does a blank return statement do?
It will end the current function without any return value. you can only use it in void functions.
What is empty return?
It means it will return None . … In this particular case it means the code will go no further if the object has the attribute ‘moved_away’ , without the return any code below would be evaluated even if the if statement evaluated to True.
What does a return statement do in Java?
A return statement causes the program control to transfer back to the caller of a method. Every method in Java is declared with a return type and it is mandatory for all java methods. A return type may be a primitive type like int, float, double, a reference type or void type(returns nothing).
How do you return an empty object in Java?
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.
Can we 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.
How do you return an empty array in Java?
Return an Empty Array Using new int in Java
To return an empty array from a function, we can create a new array with a zero size. In the example below, we create a function returnEmptyArray() that returns an array of int . We return new int that is an empty array of int .
How do you return an empty string in Java?
isEmpty() String method checks whether a String is empty or not. This method returns true if the given string is empty, else it returns false. The isEmpty() method of String class is included in java string since JDK 1.6. In other words, you can say that this method returns true if the length of the string is 0.
What does void mean in Java?
Void: It is a keyword and used to specify that a method doesn’t return anything. As main() method doesn’t return anything, its return type is void. As soon as the main() method terminates, the java program terminates too.
What is difference between return 0 and return1?
return 0: A return 0 means that the program will execute successfully and did what it was intended to do. return 1: A return 1 means that there is some error while executing the program and it is not performing what it was intended to do.