3/23/2023 0 Comments Java spring devdocs![]() Returns a string describing this Class, including ("The name of class Foo is: "+()) Since: 1.0 See Also: fineClass(byte, int, int), Type (or for void) using a class literal. It is also possible to get the Class object for a named The following example uses a Class object to print the Other members are the classes and interfaces whose declarations areĮnclosed within the top-level class declaration. Will typically record a top-level class as the host of a nest where the The classes and interfaces which belong to a nest, including its host, areĬlass files are generated, for example, a Java compiler Nest host, and enumerates the other nestmates whichīelong to the nest each of them in turn records it as the nest host. The classes and interfaces are known as nestmates. A nest is a set ofĬlasses and interfaces, in the same run-time package, thatĪllow mutual access to their private members. Other methods describe how a class or interface Some methods of class Class expose whether the declaration ofĪ class or interface in Java source code was enclosed withinĪnother declaration. Such as the module returned by getModule(). A fewĬharacteristics are determined by the class loading environment at run time, Most characteristics are derived from the classįile that the class loader passed to the Java Virtual Machine. The methods of class Class expose many characteristics of aĬlass or interface. Object is constructed automatically by the Java Virtual Machine The primitive Java types ( boolean,Ĭlass has no public constructor. That is shared by all arrays with the same element type and number Every array alsoīelongs to a class that is reflected as a Class object An enum type is a kind of class and anĪnnotation type is a kind of interface. It provides declarative support for caching, validation, transactions and formatting.Instances of the class Class represent classes and interfaces It provides powerful abstraction to JavaEE specifications such as JMS, JDBC, JPA and JTA. The Dependency Injection feature of Spring Framework and it support to various frameworks makes the easy development of JavaEE application. The Spring Framework doesn't force the programmer to inherit any class or implement any interface. Spring framework is lightweight because of its POJO implementation. The EJB or Struts application require server to run the application but Spring framework doesn't require server. The Dependency Injection makes easier to test the application. The Spring applications are loosely coupled because of dependency injection. You need to write the code of executing query only. Let's take the example of JdbcTemplate, you don't need to write the code for exception handling, creating connection, creating statement, committing transaction, closing connection etc. It hides the basic steps of these technologies. So there is no need to write too much code. ![]() ![]() Spring framework provides templates for JDBC, Hibernate, JPA etc. They are as follows: 1) Predefined Templates There are many advantages of Spring Framework. makes the code loosely coupled so easy to maintain.We provide metadata to the IOC container either by XML file or annotation. In Spring framework, IOC container is responsible to inject the dependency. ![]() In such case, there is no need to modify the code if our logic is moved to new environment. Thus, IOC makes the code loosely coupled. Let's understand this with the following code: They make the code easier to test and maintain. These are the design patterns that are used to remove dependency from the programming code. Inversion Of Control (IOC) and Dependency Injection Let's understand the IOC and Dependency Injection first. We will learn these modules in next page. The Spring framework comprises several modules such as IOC, AOP, DAO, Context, ORM, WEB MVC etc. The framework, in broader sense, can be defined as a structure where we find solution of the various technical problems. It can be thought of as a framework of frameworks because it provides support to various frameworks such as Struts, Hibernate, Tapestry, EJB, JSF, etc. It is helpful for beginners and experienced persons. Spring framework makes the easy development of JavaEE application. This spring tutorial provides in-depth concepts of Spring Framework with simplified examples. ![]()
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