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In this compliant solution, a constant PI is declared and initialized to 3.14. Thereafter, it is referenced in the code whenever the value of ? of π is needed.
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private static final double PI = 3.14;
double area(double radius) {
return 4.0 * PI * radius * radius;
}
double volume(double radius) {
return 4.0/3.0 * PI * radius * radius * radius;
}
double greatCircleCircumference(double radius) {
return 2 * PI * radius;
}
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This technique reduces clutter and promotes maintainability. If a more precise approximation of the value of ? of π is required, the programmer can simply redefine the constant.
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