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Explain the new Features of JDBC 2.0 Core API?
Explain the new Features of JDBC 2.0 Core API? The JDBC 2.0 API includes the complete JDBC API, which includes both core and Optional Package API, and provides inductrial-strength database computing capabilities. New Features in JDBC 2.0 Core API: Scrollable result sets- using new methods in the Res... 2013-02-26, 1925👍, 0💬

Is it possible to share an HttpSession between a JSP and EJB? What happens when I change a value in the HttpSession from inside
Is it possible to share an HttpSession between a JSP and EJB? What happens when I change a value in the HttpSession from inside an EJB? You can pass the HttpSession as parameter to an EJB method, only if all objects in session are serializable. This has to be consider as "passed-by-value", that mean... 2013-07-27, 1924👍, 0💬

What are different types of inner classes?
What are different types of inner classes? Nested top-level classes, Member classes, Local classes, Anonymous classes Nested top-level classes- If you declare a class within a class and specify the static modifier, the compiler treats the class just like any other top-level class. Any class outside ... 2013-05-13, 1923👍, 0💬

What is difference between custom JSP tags and beans?
What is difference between custom JSP tags and beans? Custom JSP tag is a tag you defined. You define how a tag, its attributes and its body are interpreted, and then group your tags into collections called tag libraries that can be used in any number of JSP files. To use custom JSP tags, you need t... 2013-07-04, 1920👍, 0💬

What does Perl do if you try to exploit the execve(2) race involving setuid scripts?
What does Perl do if you try to exploit the execve(2) race involving setuid scripts? Sends mail to root and exits. It has been said that all programs advance to the point of being able to automatically read mail. While not quite at that point (well, without having a module loaded), Perl does at leas... 2013-09-02, 1919👍, 0💬

What happens when you return a reference to a private variable?
What happens when you return a reference to a private variable? Perl keeps track of your variables, whether dynamic or otherwise, and doesn't free things before you're done using them. 2013-08-27, 1917👍, 0💬

What is Rational Suite?
I found your website in a Google search, after having visited another link in that search, IBM, which had an entire website devoted to Rational Suite. Essentially, all I wanted to know was who the vendor/developer of this software was and what the software did and hopefully get some detailed descrip... 2019-07-20, 1916👍, 0💬

How to read from a pipeline with Perl
How to read from a pipeline with Perl Example 1: To run the date command from a Perl program, and read the output of the command, all you need are a few lines of code like this: open(DATE, "date|"); $theDate = &lt;DATE&gt;; close(DATE); The open() function runs the external date command, the... 2013-09-05, 1916👍, 0💬

What is a Throughput Collector?
What is a Throughput Collector? The throughput collector is a generational collector similar to the default collector but with multiple threads used to do the minor collection. The major collections are essentially the same as with the default collector. By default on a host with N CPUs, the through... 2013-03-25, 1916👍, 0💬

Advantages of migrating to VB.NET ?
Advantages of migrating to VB.NET ? Visual Basic .NET has many new and improved language features — such as inheritance, interfaces, and overloading that make it a powerful object-oriented programming language. As a Visual Basic developer, you can now create multithreaded, scalable applications u... 2013-10-03, 1915👍, 0💬

Can an unreachable object become reachable again?
Can an unreachable object become reachable again? An unreachable object may become reachable again. This can happen when the object's finalize() method is invoked and the object performs an operation which causes it to become accessible to reachable objects. 2013-01-28, 1915👍, 0💬

How are this () and super () used with constructors?
How are this () and super () used with constructors? this() is used to invoke a constructor of the same class. super() is used to invoke a superclass constructor. 2012-12-26, 1911👍, 0💬

I have heard that some operating systems dont actually allocate...
I've heard that some operating systems don't actually allocate malloc'ed memory until the program tries to use it. Is this legal? It's hard to say. The Standard doesn't say that systems can act this way, but it doesn't explicitly say that they can't, either. (Such a ``deferred failure'' implementati... 2016-04-21, 1908👍, 0💬

ASP.NET interview questions only (1)
ASP.NET interview questions only (1) 1. Describe the difference between a Thread and a Process? 2. What is a Windows Service and how does its lifecycle differ from a .standard. EXE? 3. What is the maximum amount of memory any single process on Windows can address? Is this different than the maximum ... 2014-01-07, 1908👍, 0💬

What is the output of the following Perl program?
What is the output of the following Perl program? 1 $p1 = "prog1.java"; 2 $p1 =~ s/(.*)\.java/$1.cpp/; 3 print "$p1\n"; prog1.cpp 2013-08-30, 1905👍, 0💬

What is the difference between Debug.Write and Trace.Write? When should each be used?
What is the difference between Debug.Write and Trace.Write? When should each be used? Answer1: The Debug.Write call won’t be compiled when the DEBUG symbol is not defined (when doing a release build). Trace.Write calls will be compiled. Debug.Write is for information you want only in debug builds... 2014-02-24, 1902👍, 0💬

How to open and read data files with Perl
How to open and read data files with Perl Data files are opened in Perl using the open() function. When you open a data file, all you have to do is specify (a) a file handle and (b) the name of the file you want to read from. As an example, suppose you need to read some data from a file named "check... 2013-08-22, 1902👍, 0💬

Can you inherit a COM class in a .NET application?
Can you inherit a COM class in a .NET application? The .NET Framework extends the COM model for reusability by adding implementation inheritance. Managed types can derive directly or indirectly from a COM coclass; more specifically, they can derive from the runtime callable wrapper generated by the ... 2014-12-10, 1900👍, 0💬

How can I shut off the warning: possible pointer alignment problem ...
How can I shut off the ``warning: possible pointer alignment problem'' message which lint gives me for each call to malloc? A modern lint shouldn't be complaining about this. Once upon a time, lint did not and could not know that malloc ``returns a pointer to space suitably aligned for storage of an... 2016-06-03, 1896👍, 0💬

How do I send e-mail from a Perl/CGI program on a Unix system?
How do I send e-mail from a Perl/CGI program on a Unix system? Sending e-mail from a Perl/CGI program on a Unix computer system is usually pretty simple. Most Perl programs directly invoke the Unix sendmail program. We'll go through a quick example here. Assuming that you've already have e-mail info... 2013-09-04, 1894👍, 0💬

Interview question
Have you ever worked without salary? 2020-02-20, 1893👍, 0💬

How do I sort a hash by the hash key?
How do I sort a hash by the hash key? Suppose we have a class of five students. Their names are kim, al, rocky, chrisy, and jane. Here's a test program that prints the contents of the grades hash, sorted by student name: #!/usr/bin/perl -w %grades = ( kim => 96, al => 63, rocky => 87, chrisy => 96, ... 2013-09-03, 1892👍, 0💬

What are scalar data and scalar variables?
What are scalar data and scalar variables? Perl has a flexible concept of data types. Scalar means a single thing, like a number or string. So the Java concept of int, float, double and string equals to Perl's scalar in concept and the numbers and strings are exchangeable. Scalar variable is a Perl ... 2013-08-28, 1890👍, 0💬

Which of the following operators has the highest precedence?
Which of the following operators has the highest precedence? * Pre Increment (++x) * Shift bits left: &lt;&lt; * Bitwise Or: | * Post Increment (x++) Shift bits left 2014-03-19, 1886👍, 0💬

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.NET C C++ CSS DBA General HTML Java JavaScript JSP JUnit MySQL Networking Oracle Perl Perl PHP PL/SQL RSS Software QA SQL Server Struts Unix Windows XHTML XML