How can I get a String representing name of the color (and not the awt RGB code) from an instance of the Color class?
For example I have
Color black=Color.BLACK;
and I want to get the string "Black".
I know this should be possible using Java reflection, but I'm not very familiar with it. Thank you.
Color class has only few non-static fields which are
name | type
----------+---------------
value | int
frgbvalue | float[]
fvalue | float[]
falpha | float
cs | java.awt.color.ColorSpace
and none of this fields store color name. Also it doesn't have any method which would check if color you are using is equal to one of its predefined ones and stored in static references like
public final static Color black = new Color(0, 0, 0);
public final static Color BLACK = black;
But nothing stops you from implementing your own method which will do it for you. Such method can look like
public static Optional<String> colorName(Color c) {
for (Field f : Color.class.getDeclaredFields()) {
//we want to test only fields of type Color
if (f.getType().equals(Color.class))
try {
if (f.get(null).equals(c))
return Optional.of(f.getName().toLowerCase());
} catch (IllegalArgumentException | IllegalAccessException e) {
// shouldn't not be thrown, but just in case print its stacktrace
e.printStackTrace();
}
}
return Optional.empty();
}
Usage example
System.out.println(colorName(Color.BLACK).orElse("no name found"));
System.out.println(colorName(new Color(10, 20, 30)).orElse("no name found"));
System.out.println(colorName(null).orElse("no name found"));
Output:
black
no name found
no name found
You can use predefined map <Color, String> to insert some predfined colors on it and then use it to get the name
HashMap<Color,String> hm = new HashMap <Color,String>();
hm.put(Color.BLACK,"Black");
.
.
.
hm.get(Color.BLACK)
