How can we perform exception handling in JSP?
There are two ways of handling exceptions in JSP. They are: By errorPage and isErrorPage attributes of page directive. By element in web.
What are the different types of errors in JSP?
Exceptions in JSP are of three types: Checked Exception. Runtime Exception. Error Exception.
Can we use try catch in JSP?
If you want to handle errors within the same page and want to take some action instead of firing an error page, you can make use of the try…. catch block.
How can a servlet call a JSP error page?
How can a servlet call a JSP error page? Explanation: The servlet needs to forward the request to the specific error page URL. The exception is passed along as an attribute named “javax. servlet.
Which tag is used for error handling in JSP pages?
Error handling at the page level A JSP page can specify its own default error JSP page from an exception that is occurring within it, through the JSP error tag.
What is tag Library in JSP?
A tag library defines a collection of custom actions. The tags can be used directly by developers in manually coding a JSP page, or automatically by Java development tools. A tag library must be portable between different JSP container implementations.
What is error handling in Java?
Java Exception Handling is a mechanism to handle runtime errors such as ClassNotFoundException, IOException, SQLException, RemoteException, etc. Exception is an unwanted or unexpected event, which occurs during the execution of a program, i.e. at run time, that disrupts the normal flow of the program’s instructions.
How do I debug a JSP file?
Procedure
- In the Project Explorer view, open your JSP file.
- Verify that you are using the Source page of the editor.
- From the JSP file’s context menu in the Project Explorer view, click Debug As> Debug on Server.
- In the Debug view, step through the code and make the necessary changes to the JSP file.
- Save the JSP file.
How is error handling done in JavaScript explain with example?
JavaScript provides error-handling mechanism to catch runtime errors using try-catch-finally block, similar to other languages like Java or C#. try: wrap suspicious code that may throw an error in try block. catch: write code to do something in catch block when an error occurs.
What is Jasper exception in JSP?
The jasper exception might be due to any small mistake we commit in our JSP. Then, the compiler cannot compile the class for Java. So, what can be concluded broadly is JasperException occurs when our JSP can’t be compiled into class file… for example, Yourfile.
How to handle exceptions in JSP?
So handling exceptions is a safer side for the web developer. In JSP, there are two ways to perform exception handling: In this case, you must define and create a page to handle the exceptions, as in the error.jsp page. The pages where may occur exception, define the errorPage attribute of page directive, as in the process.jsp page.
How do I set up an error page in JSP?
Whenever the page throws an exception, the JSP container automatically invokes the error page. Following is an example to specifiy an error page for a main.jsp. To set up an error page, use the <%@ page errorPage = “xxx” %> directive. We will now write one Error Handling JSP ShowError.jsp, which is given below.
How to handle error object in JSP using JSTL tags?
How to handle error object in JSP using JSTL tags? You can make use of JSTL tags to write an error page ShowError.jsp with better structure and more information − Opps… java.lang.RuntimeException: Error condition!!!
How to handle errors within the same page in JavaScript?
If you want to handle errors within the same page and want to take some action instead of firing an error page, you can make use of the try….catch block. Following is a simple example which shows how to use the try…catch block. Let us put the following code in main.jsp −