What are static factory methods?

Question

What\'s a \"static factory\" method?

Answer 1

If the constructor of a class is private then you cannot create an object for class from outside of it.

class Test{
 int x, y;
 private Test(){
  .......
  .......
  }
}

We cannot create an object for above class from outside of it. So you cannot access x, y from outside of the class. Then what is the use of this class?
Here is the Answer : FACTORY method.
Add the below method in above class

public static Test getObject(){
  return new Test();
}

So now you can create an object for this class from outside of it. Like the way...

Test t = Test.getObject();

Hence, a static method which returns the object of the class by executing its private constructor is called as FACTORY method
.