Can we use class name as return type?

When a method uses a class name as its return type, such as pop does, the class of the type of the returned object must be either a subclass of or the exact class of the return type. However, an Object is not necessarily a Number — it could be a String or another type. You also can use interface names as return types.

Why do we use return type?

In computer programming, the return type (or result type) defines and constrains the data type of the value returned from a subroutine or method. In many programming languages (especially statically-typed programming languages such as C, C++, Java) the return type must be explicitly specified when declaring a function.

What is class return type?

Every Method has a return type whether it is void, int, double, string or any other datatype. The getReturnType() method of Method class returns a Class object that represent the return type, declared in method at time of creating the method.

What is the use of return type 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).

When method name and class name is same it is called?

Having two or more methods named the same in the same class is called overloading.

What are the types and write briefly on each types of return?

There are three types of returns which are filed for the purpose of income tax- Original Return, Revised Return and Belated Return. Any individual who is of or below 60 years of age and earns a total income of 2.5 lakhs or above in a given financial year is liable to file an income tax return.

What is the return type of class for name () method?

The forName() method of Java Class class returns the Class object associated with the class or interface with the given name in the parameter as String.

What is the role of return statement?

A return statement ends the execution of a function, and returns control to the calling function. Execution resumes in the calling function at the point immediately following the call. A return statement can return a value to the calling function.

What does only return mean in Java?

In Java, return is a reserved keyword i.e, we can’t use it as an identifier. It is used to exit from a method, with or without a value. Usage of return keyword as there exist two ways as listed below as follows: Case 1: Methods returning a value.

When to use a class name as the return type?

When a method uses a class name as its return type, the class of the type of the returned object must be either a subclass of, or the exact class of, the return type. Suppose that you have a class hierarchy in which ImaginaryNumber is a subclass of java.lang.Number, which is in turn a subclass of Object, as illustrated below.

What is return type in Java with example?

Java Object Oriented Programming Programming. 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 i nt, float, double, a reference type or void type (returns nothing).

What is a return type in C++?

A return type may be a primitive type like int, float, double, a reference type or void type(returns nothing). There are a few important things to understand about returning the values The type of data returned by a method must be compatible with the return type specified by the method.

How to get the class of an object with no instance?

The .class syntax allows to obtain a Class if the type of object is available, but there is no instance. Also, the easiest way to get a class for a primitive type. It just like Class object = SomeClass.class; The above statement will return the object of that particular class and will put it in Class Variable.