Technology Questions

ALV is Application List viewer. Sap provides a set of ALV (ABAP LIST VIEWER) function modules which can be put into use to embellish the output of a report. This set of ALV functions is used to enhance the readability and functionality of any report output. Cases arise in sap when the output of a report contains columns extending more than 255 characters in length. In such cases, this set of ALV functions can help choose selected columns and arrange the different columns from a report output and also save different variants for report display. This is a very efficient tool for dynamically sorting and arranging the columns from a report output. The report output can contain up to 90 columns in the display with the wide array of display options.

Security/penetration testing is testing how well the system is protected against unauthorized internal or external access, or willful damage. This type of testing usually requires sophisticated testing techniques.

There will always be a default constructor in every class 

Querystring is used to send data from one page to another with URL.But it can store only some minimum amount of data.Most browsers allow a limit of 255 characters on URL length

An abnormal situation during execution of a CICS command is called an exceptional condition:

1. Handle Condition Command: It is used to transfer control to the procedure label specified if the exceptional condition specified occurs.

2. Ignore Condition Command: It causes no action to be taken if the condition specified occurs in the program. That is control will be returned to the next instruction following the command which encountered the exceptional condition.

3. No Handle Option: This option can be specified in any CICS command and it will cause no action to be taken for any exceptional condition occurring during execution of this command.

4. RESP Option: This option can be specified in any CICS command. If the RESP option is specified in a command, CICS places a response code at a completion of the command. The application program can check this code, then proceed to the next processing.

Call transaction

The synchronized keyword indicates that a method can be accessed by only one thread at a time

With the help of RTTI, We can get the information about the data type at the runtime.