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Category Archives: Technical
J2EE Frequently Asked Questions
1. What is an Application Server? An application server is a program that handles all application operations between users and an organization’s backend business applications or databases. An application server is software that doesn’t do regular stuff like sell your stocks or let you write documents. A server’s users aren’t people; the server’s users are other applications. Application servers provide services to distributed applications. These services include security, data integrity, and resource management (making sure there’s enough memory to go around). These … More ->
Juniper Routers Tutorial
Juniper Networks Router Design The central design principle of the Juniper Networks platform centers on a separation of the control and forwarding planes within the router. The Routing Engine and the Packet Forwarding Engine, respectively, represent these planes. Routing Engine Overview The Routing Engine in a Juniper Networks router is the central location for control of the system responsible for: • Storing the JUNOS software & Performing software upgrades • Monitoring and configuring the router. • … More ->
Oracle PL/SQL Frequently Asked Questions
Source: http://www.orafaq.com Oracle PL/SQL FAQ Topics · What is PL/SQL and what is it used for? · Should one use PL/SQL or Java to code procedures and triggers? · How can one see if somebody modified any code? · How can one search PL/SQL code for a string/key value? · How can one keep a history of PL/SQL code changes? · How can I protect my PL/SQL source code? · Can one print to the screen from PL/SQL? · Can … More ->
Servlets FAQ
TABLE OF CONTENTS How does the performance of JSP pages compare with that of servlets? How does it compare with Perl scripts? What’s a better approach for enabling thread-safe servlets and JSPs? SingleThreadModel Interface or Synchronization? How can I further optimize my servlets? How do I set my CLASSPATH for servlets? Why doesn’t my servlet work inside a <SERVLET> tag? How do I fully shut down the server? My browser says “the server returned an invalid or unrecognized response” — … More ->
JSP Frequently Asked Questions
Can a JSP page instantiate a serialized bean? It’s similar to communication between Servlet and Applet. I’m also suffering for that. In applet, there is no problem when posting a request to JSP. But in case of getting a response of JSP, “java.io.StreamCorruptedException” occurs if I use ObjectInputStream. It’s fine, however, if I use InputStreamReader. Confer the sample below. /** applet */ // Get URLConnection String urlStr = “http://www.webtrack.co.kr/jsp/appletproxy.jsp”; URL serverURL = new URL(urlStr); URLConnection uc = serverURL.openConnection(); uc.setDoOutput(true); // … More ->