How To Get Return Value From Method In Java

A method that returns the code that called it when it

  • complete all statements in the method,
  • achieve a return statement, or
  • throws an exception (mentioned later),

What happens before Read: how to get return value from method in javaYou declare the return type of a method in its method declaration. In the body of the method, you use the return statement to return the value. Any method declared void returns no value. It does not need to contain a return statement, but it can. In such a case, a return statement can be used to branch out from the control flow block and exit the method and is simply used as follows: If you try to return a value from a method is declared void, you will get a compiler Read More: How to make the shoe not slip Any method that is not declared void must contain a return statement with the corresponding return value, like following: The data type of the return value must match the declared return type of the method; you cannot return an integer value from a method declared to return a boolean. The getArea() method in the Rectangle Rectangle class was discussed in the sections about objects returning an integer: evaluates to. The getArea method returns a primitive type. A method can also return a reference type. For example, in a program to manipulate Bicycle objects, we might have a method like this:

Return a class or interface

If this section confuses you, skip it and come back to it after you’ve completed the lessons on interfaces and inheritance. , the class of the return object type must be a subclass of or the exact class of the return type. Assume that you have a class hierarchy where ImaginaryNumber is a subclass of, which in turn is a subclass of Object, as shown in the following figure. Class Hierarchy for ImaginaryNumberClass hierarchy for ImaginaryNumberNow, assuming that you have a method declared to return a Number: The returnANumber method can return an imaginary Number but not an Object. ImaginaryNumber is a Number because it is a subclass of Number. However, an Object doesn’t have to be a Number – it can be a String or another type. You can override a method and define it to return a subclass of the original method, like this: the return type is allowed to change in the same direction as the subclass.Read more: dead cells entering the zone hibernate conservation | Top Q&A

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