Szkolenie Preparation for the Oracle Certified Java Associate (OCJA) Examination

Fundamental Object-Oriented Concepts

• Primitives (integer, floating point, boolean, and character), enumeration types, and objects.
• Concrete classes, abstract classes, and interfaces, and how inheritance applies to them.
• Class compositions, and associations (including multiplicity: (one-to-one, one-to-many, and many-to-many), and association navigation.
• Information hiding (using private attributes and methods), encapsulation, and exposing object functionality using public methods; and describe the JavaBeans conventions for setter and getter methods.
• Polymorphism as it applies to classes and interfaces, and describe and apply the "program to an interface" principle.

UML Representation of Object-Oriented Concepts

• UML representation of classes, (including attributes and operations, abstract classes, and interfaces), the UML representation of inheritance (both implementation and interface), and the UML representation of class member visibility modifiers (-/private and +/public).
• UML representation of class associations, compositions, association multiplicity indicators, and association navigation indicators.

Java Implementation of Object-Oriented Concepts

• Using primitives, enumeration types, and object references.
• Declaring concrete classes, abstract classes, and interfaces.
• Implementing simple class associations, code that implements multiplicity using arrays.
• Using polymorphism for both classes and interfaces.

Section 4: Algorithm Design and Implementation

• The three fundamental types of statements: assignment, conditional, and iteration.
• Declaring variables in any of the following scopes: instance variable, method parameter, and local variable.
• Conditional statements (if and switch), iteration statements (for, for-each, while, and do-while), assignment statements, and break and continue statements.
• Method parameters, the return type, and the return statement.
• Assignment operators (limited to: =, ++, -=), arithmetic operators (limited to: +, -, *, /, %, ++, --), relational operators (limited to: <, <+=, >, >=, ==, !=), logical operators (limited to: !, &&, ||) .
• The concatenation operator (+), and the following methods from class String: charAt, indexOf, trim, substring, replace, length, startsWith, and endsWith.

Java Development Fundamentals

• Import and package statements.
• Use of the "javac" command (including the command-line options: -d and -classpath), and the "java" command (including the command-line options: -classpath, -D and -version).
• The Java packages: java.awt, javax.swing, java.io, java.net, java.util.

Java Platforms and Integration Technologies

• The three Java platforms: J2SE, J2ME, and J2EE.
• RMI.
• JDBC, SQL, and RDBMS technologies.
• JNDI, messaging, and JMS technologies.

Client Technologies

• Creating thin-clients using HTML and JavaScript and the related deployment issues and solutions.
• Creating clients using J2ME midlets.
• Creating fat-clients using Applets.
• Creating fat-clients using Swing.

Server Technologies

• EJB, servlets, JSP, JMS, JNDI, SMTP, JAX-RPC, Web Services (including SOAP, UDDI, WSDL, and XML), and JavaMail.
• Servlet and JSP support for HTML thin-clients.
• EJB session, entity and message-driven beans.
• J2EE server-side technologies, web-tier, business-tier, and EIS tier.