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Handling null in Java

Java Topic / Java tutorial An exception is an abnormal condition that arises in a code sequence at run time. An exception is a run-time error. Most of these run-time errors could be prevented by doing proper input validation as shown in 151, but in cases where we can not prevent effectively we can use the exception handling mechanism provided by Java.

"Units of Measurement API specifies one or more JavaTM packages for the programmatic handling of physical quantities and their expression as numbers of units."

Quick guide on where to use Assertion in Java with code example. Assertion in java is fairly underused feature but if used carefully can complement both Unit Testing and Exception handling. Since Assertion sits on code its gets more expose than unit testing and can test your function with more real data than one or two test data.

"The Maven Archiver is mainly used by plugins to handle packaging. The version numbers referenced in the Since column on this page are the version of the Maven Archiver component - not for any specific plugin. To see which version of Maven Archiver a plugin uses, go to the site for that plugin. "

JSP Tutorial - Javatpoint website provides you a complete JSP tutorial with practical programming examples and easy steps using this beginner's tutorial containing basic to advanced knowledge of Java JSP Technology including Form Data, HTTP Request Header, Response Header, Scripting elements, Directive elements, Custom tags, Cookies Handling and Session Tracking.

"Executing external processes from Java is a well-known problem area. It is inheriently platform dependent and requires the developer to know and test for platform specific behaviors, for example using cmd.exe on Windows or limited buffer sizes causing deadlocks. The JRE support for this is very limited, albeit better with the new Java SE 1.5 ProcessBuilder class. Reliably executing external processes can also require knowledge of the environment variables before or after the command is executed. In J2SE 1.1-1.4 there is not support for this, since the method, System.getenv(), for retriving environment variables is deprecated. There are currently several different libraries that for their own purposes have implemented frameworks around Runtime.exec() to handle the various issues outlined above. The proposed project should aim at coordinating and learning from these initatives to create and maintain a simple, reusable and well-tested package. Since some of the more problematic platforms are not readily available, it is my hope that the broad Apache community can be a great help."

When developing a mobile application, you need not focus on the limitations or capabilities of different browsers, as Trinidad enables you to develop applications that function properly on different browser types. The Trinidad renderer ensures that the target browser can consume contents correctly. It handles the variations in both browser implementations of HTML, JavaScript, CSS, DOM, XMLHttpRequest and system performance. For example, if a browser does not support XMLHttpRequest and is incapable of posting a partial page request to a server, support for AJAX enables the application to revert automatically to a full page submit so that the same page functions whether the browser supports XMLHttpRequest or not. Furthermore, if the target browser does no support JavaScript Trinidad will automatically render contents that work on HTML by removing all dependencies on JavaScript.

FTP Server written in pure Java. Supports AUTH SSL (Explicit SSL), it is firewall friendly (handles the CCC command), has virtual home directories with individual read/write access, anoymous support and many more

Shrinkwrap provides a simple mechanism to assemble archives like JARs, WARs, and EARs with a friendly, fluent API. JavaArchive archive = ShrinkWrap.create(JavaArchive.class,"archive.jar")    .addClasses(MyClass.class,MyOtherClass.class)    .addResource("mystuff.properties"); From there you may deploy directly into any supported integration container like JBoss EmbeddedAS, GlassFish v3 Embedded, Jetty, or OpenEJB.  Or perhaps you'd like to export the archive to a file or exploded directory structure.  Maybe you'd prefer to serialize it over the network to a remote host.  The possibilities are limitless. To boot, ShrinkWrap is the supported deployment mechanism of the Arquillian project, and together we render the testing of true enterprise components amiable as a puppy.  Where Java EE brought a POJO programming model to application development, we've brought it to testing.  You handle your business logic; we'll do the rest. To foster community participation, the majority of documentation and examples are available through our Wiki. Releases are available either via our Downloads section, or through the JBoss Maven Repository, which we recommend is configured in ${userHomeDir}/.m2/settings.xml:

Java Topic / Java tutorial The best way to handle exception is by preventing it. Since exception causes abnormal termination of programs and they consume lot of resources compared the to the normal code execution.

I think many people have the same feeling (of course including me)