Read in file for constants #java

Question

I want to read in a datafile that has several constants for my program (e.g. MAXARRAYSIZE).
I then want these constants to be accessible anywhere in my program by typing som

Answer 1

Use a static bloc in ConstantsClassName class.

public class ConstantsClassName{
    public static final  String MAXARRAYSIZE;
    static{
        // read your file and store the data in;
        MAXARRAYSIZE = valueRetrievedFromFile;
    }
}

MAXARRAYSIZE should be MAX_ARRAY_SIZE if you follow Java conventions for constants declaration.