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Java Spring Framework (Spring Boot (Definition (is a new way to create…

- - - - Maven
      - Gradle
    - - UNIX cURL
      - Spring Tool Suite (STS)
- - - - registry of different beans and their dependencies
      - read bean definitions and access them using the bean factory
      - has only six methods
      - The BeanFactory interface
        
        implements
        
        XmlBeanFactory class
        
        XmlWebApplicationContext
        
        BeanFactory
        
        A BeanFactory is like a factory class that contains a collection of beans
        
        instantiates the bean whenever asked for by clients
    - - adds more enterprise-specific functionality
        
        the ability to resolve textual messages from a properties file
        
        the ability to publish application events to interested event listeners
      - includes all functionality of the BeanFactory container
      - implementations
        
        ClassPathXmlApplicationContext
        
        WebXmlApplicationContext
        
        FileSystemXmlApplicationContext
    - - Create Bean
        
        Using Static Factory Method
        
        Using Instance Factory Method
        
        Using Constructor
      - Bean Naming
      - Bean Instantiation Mode (bean scopes)
        
        Request
        
        Session
        
        Prototype
        
        Global-session
        
        Singleton (default)
        
        Thread
      - Bean Autowiring
        
        byType
        
        constructor
        
        byName
        
        autodetect
        
        no (default)
      - Setting Bean Inheritance
      - Bean Lifecycle
        
        Types of bean life cycle events
        
        Post initialization callback methods
        
        Pre destruction callback methods
        
        *Aware interfaces for specific behavior
        
        Custom init() and destroy() methods in bean configuration file
        
        InitializingBean and DisposableBean callback interfaces
        
        PostConstruct and PreDestroy annotations
        
        Lifecycle stages
        
        use: calling the post-init method
        
        destroy
        
        initialize
  - - - Modules make no assumptions about what other systems do but rely on their contracts
      - Every module can focus on what it is designed for
      - Decoupling of the execution of a certain task from implementation
      - Replacing modules has no side effect on other modules
    - - Dependency Lookup / Service Locator (SL) Pattern
      - Dependency Injection (DI) Pattern
        
        used to create instances of objects that other objects rely on without knowing at compile time which class will be used to provide that functionality
        
        types
        
        Setter Dependency Injection
        
        Interface Dependency Injection
        
        Constructor Dependency Injection
      - Factory Pattern