Learn Spring for Android Application Development

Singleton scope

The default scope is always a singleton. This is a bean definition of the Spring IoC container that returns a single object instance in every object initialization. Here's a piece of code for the singleton scope:

<!-- A bean example with singleton scope --><bean id = "..." class = "..." scope = "singleton"/><!-- You can remove the scope for the singleton --><bean id = "..." class = "..."/>

Let's take a look at an example of a singleton scope.

Create a Spring project in the IDE. To do this, create two kt files and a bean XML configuration file under the src folder. 

Here's a piece of the code of CreateUserGreeting.kt:

class UserGreeting {    private var globalGreeting: String? = "Sasuke Uchiha"    fun setGreeting(greeting: ...