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When would you use a static factory method?
A static factory method is a public static method on the object that returns a new instance of the object. These type of methods share the same benefits as the traditional factory method design pattern. This is especially useful for value objects that don’t have a separate interface and implementation class.
Are factory methods static?
The constructors are marked private, so they cannot be called except from inside the class, and the factory method is marked as static so that it can be called without first having an object.
Which of the following options is a disadvantage of using a static factory method instead of constructor while implementing the Factory pattern?
The main disadvantage of providing only static factory methods is that classes without public or protected constructors cannot be subclassed.
Why factory method is better than constructor?
The factory method is a smart way to create objects in Java and provides several advantages over the traditional approach of creating objects using constructors in Java. It can also improve the quality of code by making the code more readable, less coupled, and improves performance by caching.
How are static factory methods used in Stackify?
A static factory method is a public static method on the object that returns a new instance of the object. These type of methods share the same benefits as the traditional factory method design pattern. This is especially useful for value objects that don’t have a separate interface and implementation class.
How are static factory methods used in Constructors?
Static factory methods can encapsulate all the logic required for pre-constructing fully initialized instances, so they can be used for moving this additional logic out of constructors. This prevents constructors from performing further tasks, others than just initializing fields.
Do you need IntelliSense for static factory methods?
No code comments or IntelliSense needed. The key elements to implement this pattern are simple: the factory method must be public, static, and return an instance of the class in which it is defined.
Which is an example of a static method in JDK?
Quite possibly the most representative example of static factory methods in the JDK is the Collections class. This is a non-instantiable class that implements only static methods. Many of these are factory methods that also return collections, after applying to the supplied collection some type of algorithm.