Java Reference
In-Depth Information
We'll see example subclasses of this
Plotter
class in upcoming chapters.
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A value class is one used mainly to hold state, rather than logic: a
Person
is a value class, whereas
java.lang.Math
is not. Many classes are somewhere in between.
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30
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Of course these lights wouldn't have remote power-off. But the computers might, for maintenance
purposes.
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For Java folks not that familiar with C/C++, C is the older, non-OO language; C++ is an OO deriv-
ative of C; and Java is in part a portable, more strongly typesafe derivative of C++.
