How to use Singleton design pattern in your Java project?
Singleton pattern is also commonly known as the creational pattern by many Java programmers. It works on decoupling the object in java from the implementation part. Singleton can be used by itself or many singleton design patterns can be used at once depending on the project. The singleton design pattern when used many of them together at a time can be really complex. But it does restrict the instance of the class so you can only use a single instance when using this design pattern.
Use of Singleton Pattern in Java
The use of singleton design pattern in java occurs when the instance of the class must be available for different and many objects created in the class. It is also used for logging into the log file to see the logs available in the file. It fetches the log manager details to get it. They are mainly used for global configuration in Java project. It makes tight coupling in Java so that the singleton pattern is hard for the access for testing it. Singleton pattern can be used on online shopping carts that are coded and programmed in Java programming language. It’s best to use the singleton pattern design in your java project especially when working with only one instance. Whenever the project in Java includes only single instance the use of singleton design pattern is the best choice for your java project.
Approaches for Singleton Design Pattern
There are different approaches to using the singleton design pattern in Java. Such as The private static variables, private static methods, as well as private constructors. The design pattern uses the constructors and set them to be private to the class. All of the approaches are different but ends up resulting in restricting the use of instance to be only of a single instance of the class.
Although Singleton design pattern in Java is known as to be the easiest design pattern to use and to implement in Java. It provides the best and easiest ways to create an object in java. A single Object class can be created using this design pattern. The class is created with the use of constructor which is private and contains a single static instance of that class. This design prevents the object created to have its duplicated property since it allows only single instance. It allows the objects to have access to the instance with use of this pattern. Class handling the instantiations process in this design pattern can even make changes in the process.
