rentalproyektor Before you can start building objects

rentalproyektor
Jan 11 07
Before you can start building objects, you need to understand a couple of the
more confusing aspects of object-oriented programming. Remember this
sentence: Classes are templates, and objects are instances.
In Java, when you want to create a new type of object, you can't just make
one. You must first make a blueprint, or template, of the object you want to rentalproyektor
create. From this template, you can make as many objects as you want. Think
of it as a software cookie cutter.
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Objects are known as instances of classes. The template has been used to
create an object, and the object now exists virtually inside the computer. You
can think of an object as the cookie that the cookie cutter creates. If things
seem confusing, don't worry. The next section gets to the process of making
objects, and things should get much clearer.

Suppose you are doing a lot of Web design for rentalproyektor

rentalproyektor
Suppose you are doing a lot of Web design, and you want to look at
different colors to add to your pages. Web browsers let you specify the
background color of pages and the color of active and visited links so that
you can have more control over a page's design. Unfortunately, you can'trentalproyektor
just say that you want something to be green. To specify a color in most
browsers, you need to know the RGB values, or even the hexadecimal
value, of a color. Suppose you want an http://www.greateventsupport.com
applet that enables users to see how
a certain RGB color appears inside their Web browser. It would make
sense to use sliders to select from a range of colors and to have text fields
that let the user enter the components of the color directly (see Figure 2.4).