Sun Certified Java Programmer 310-065-Lesson 4-Object Orientation-Part 1 (How classes extend other classes but implement other interfaces) | Java courses

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Title: Sun Certified Java Programmer 310-065-Lesson 4-Object Orientation-Part 1  (How classes extend other classes but implement other interfaces)

Duration:  18 minutes

Summary: In this video, we continue our discussion of questions that cover "declaration and Access Control". We start with questions that talk about classes and interfaces. We looked at how classes extend other classes, but implement other interfaces. Then we talked about incorrect variable declarations. When declaring variables, we start the name of the variable with a letter, an underscore, or a dollar sign. We cannot start with a number or a pound sign. The other questions cover enums. Every enum comes with a static values() method that returns an array of the enum's values, in the order in which they are declared in the enum.

Methodology of the development of example: Good coding standard and simplified design to prepare for the Java programmer certification exam CX-310-065.

Technology Used: Java - Core Concepts.

Keywords: Sun Certified Java Programmer, class, interface, implements, extends, enum, values().