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Top Ten Errors Java Programmers Make - Web Development. Many programmers, particularly when first introduced to Java, have Top Ten Errors Java Programmers Make New to Java? We'll help you get started with our revised beginner's tutorial , or our free online textbook. Get the latest Java books h t t p : / /w w w . j a v a c o f f e e b r e a k . c o m / Menu Learning Java Articles Author Profiles Lessons FAQ's Books Newsletter Tutorials Talk Java! Using Java Applets JavaBeans Servlets Resources Discuss Java Looking for Java resources? Check out the Java Coffee Break directory ! Top Ten Errors Java Programmers Make (How to spot them. How to fix/prevent them.) By David Reilly Whether you program regularly in Java, and know it like the back of your hand, or whether you're new to the language or a casual programmer, you'll make mistakes. It's natural, it's human, and guess what? You'll more than likely make the same mistakes that others do, over and over again. Here's my top ten list of errors that we all seem to make at one time or another, how to spot them, and how to fix them. 10. Accessing non-static member variables from static methods (such as main) problems with accessing member variables from their main method. The method signature for main is marked static - meaning that we don't need to create an instance of the class to invoke the main method. For example, a Java Virtual Machine (JVM) could call the class MyApplication like this :- MyApplication.main ( command_line_args ); This means, however, that there isn't an instance of MyApplication - it doesn't have any member variables to access! Take for example the following application, which will generate a compiler error message. public class StaticDemo { public String my_member_variable = "somedata";

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Online portal of Internet Technology Architecture and Development: Web Design Is The Skill Of Creating Presentations Of Content. Web Design Is A Kind Of Graphic Design Intended For Development And Styling Of Objects Of The Internet's Information Environment To Provide Them With High-end Consumer Features And Aesthetic Qualities.

Website about Software Developers - Technologies. * J2EE: EJB, JSP, Servlets, JSF, JSTL, JCA, JMS, JTA, JNDI, JDBC, JMX, RMI, etc. * Frameworks: Struts, Hibernate, JPA, iBATIS, JBoss AOP, Spring, JSF, AJAX, GWT, YUI, Flex/Flash, JUnit, and Jakarta common libraries. * Integration: Web Services on Axis and WebMethods; as well as the Web Service Standards such as SOAP, WSDL and UDDI. * Also experience with .NET and other major Microsoft technologies. Languages: * JAVA: J2SE, J2EE, EJB, JSP, Servlets, JDBC, JFC/Swing, Networking, Beans, RMI, CORBA, Security, etc. * C/C++: MFC, DBLIB, Internet Services, DAO, ODBC, DLL; gcc, ANSI C, POSIX, STD, TCP Socket, etc. * HTML, DHTML, JavaScript, ActionScript, PHP, Perl, XML, XSLT. * Visual Basic, C#. * As well as Fortran, Turbo Pascal and Assembler. * UML: Enterprise Architect, Rational Rose, Together, Magic Draw, etc. EIS, Servers, databases: * Application Servers: JBoss, WebSphere, WebLogic, Tomcat and Oracle Application Server; * Web Servers: Apache HTTP web server and MS IIS. * SAP/R3 * ORACLE: PL/SQL, Pro*C/C++, Oracle Developer, Inter Media/Text, Replication, Oracle AS, OCI, DBA. * MySQL: DBA, Clustering * MSSQL: Transact-SQL, DBLIB, DBA * DB2 UDB: SQL PL, DBA * Also MS Access, Sybase, Oracle Power Object and Clipper..