Can a static method return an object?

Can a static method return an object?

Whenever you return values from a static method they are either static nor instance by default, they are just values. But, since you cannot declare variables of a method static if you need to declare the vales returned by a method static you need to invoke it in the class outside the methods.

Can a static method create new instance?

Static method(s) are associated with the class in which they reside i.e. they are called without creating an instance of the class i.e ClassName.

Can we declare static object?

To create a static member(block,variable,method,nested class), precede its declaration with the keyword static. When a member is declared static, it can be accessed before any objects of its class are created, and without reference to any object.

Why do we use static methods?

Example of static Method. static methods are generally used to perform an operation that is not dependent upon instance creation. static methods are also widely used to create utility or helper classes so that they can be obtained without creating a new object of these classes.

Is it possible for a static method to call a non static method?

The only way to call a non-static method from a static method is to have an instance of the class containing the non-static method. By definition, a non-static method is one that is called ON an instance of some class, whereas a static method belongs to the class itself.

How do you use a static method?

If you apply static keyword with any method, it is known as static method.

1. A static method belongs to the class rather than the object of a class.
2. A static method can be invoked without the need for creating an instance of a class.
3. A static method can access static data member and can change the value of it.

How to return an object from static method?

I’ve declared a static method whose return type is class. when I access this method from main method is gives me following error. How can I return the object from this method? A static method or a static variable belongs to a class and not the instance of the class. this is an instance variable which points to the current reference.

When do you need to use static method?

You need static method when you need to provide common functionality to all objects or memory optimization, because if you create a new object for accessing only a single method, it’s memory wasting and increasing overhead in memory management. Thanks for contributing an answer to Software Engineering Stack Exchange!

How is thread safe in a static method?

In your example this is perfectly thread safe. Each thread in your application has its own stack, the int parameter passed into the function is a value type so it is created in each threads stack therefore two threads have different copies of this variable so will not affect eachother.

Can a static variable be used in a static block?

A static method or a static variable belongs to a class and not the instance of the class. this is an instance variable which points to the current reference. Hence this cannot be used within a static block. So, you should rephrase your code something like this,