- What is the full form of JDBC?
- Which methods are used to execute SQL queries?
- What is model in struts2 framework?
- Which type of dependency injection is supported by struts2?
- Which design pattern is used in struts2?
- What is interceptor struts2?
- How can you execute a stored procedure in the database?
- What is JDBC and JDBC drivers?
- What is return type of execute () method in struts2?
- What is the return type of execute update method?
- What are the steps required to execute a query in JDBC?
- What is ActionSupport in struts2?
What is the full form of JDBC?
Java Database Connectivity (JDBC) is an application programming interface (API) for the programming language Java, which defines how a client may access a database.
It is a Java-based data access technology used for Java database connectivity..
Which methods are used to execute SQL queries?
The Statement interface provides three different methods for executing SQL statements: executeQuery , executeUpdate , and execute . The correct method to use is determined by what the SQL statement produces. The method executeQuery is designed for statements that produce a single result set, such as SELECT statements.
What is model in struts2 framework?
A framework tries to automate the common tasks and provides a platform for the users to build applications quickly. … Struts 2 framework implements the Model-View-Controller (MVC) design pattern. In Struts 2 the model, view and controller are implemented by the action, result and FilterDispatcher respectively.
Which type of dependency injection is supported by struts2?
Native Dependency InjectionStruts2 provides support for Dependency injection. You may use DI containers like “Spring” in your Struts2 application, or may use Native Dependency Injection available in Struts2 (XWork2) framework. It’s based on Google’s “guice” (both being made by same person).
Which design pattern is used in struts2?
What design patterns are used in Struts? Struts is based on model 2 MVC (Model-View-Controller) architecture. Struts controller uses the command design pattern and the action classes use the adapter design pattern. The process() method of the RequestProcessor uses the template method design pattern.
What is interceptor struts2?
Interceptor is an object that is invoked at the preprocessing and postprocessing of a request. In Struts 2, interceptor is used to perform operations such as validation, exception handling, internationalization, displaying intermediate result etc.
How can you execute a stored procedure in the database?
To execute a stored procedure Expand the database that you want, expand Programmability, and then expand Stored Procedures. Right-click the user-defined stored procedure that you want and click Execute Stored Procedure.
What is JDBC and JDBC drivers?
A JDBC driver is a software component enabling a Java application to interact with a database. JDBC drivers are analogous to ODBC drivers, ADO.NET data providers, and OLE DB providers. To connect with individual databases, JDBC (the Java Database Connectivity API) requires drivers for each database.
What is return type of execute () method in struts2?
1. Action. Struts 2 actions don’t force you to implement any interface or extends class, it’s only required you to implement an execute() method that returns a string to indicate which result page should return.
What is the return type of execute update method?
When execute returns false, the method getUpdateCount returns an int. If this number is greater than or equal to zero, it indicates the update count returned by the statement. If it is -1, it indicates that there are no more results.
What are the steps required to execute a query in JDBC?
Fundamental Steps in JDBCImport JDBC packages.Load and register the JDBC driver.Open a connection to the database.Create a statement object to perform a query.Execute the statement object and return a query resultset.Process the resultset.Close the resultset and statement objects.Close the connection.
What is ActionSupport in struts2?
by. ActionSupport class implements a no. of interfaces like Action, Validateable, LocaleProvider and Serializable etc. It is more commonly used instead of Action interface.