EBoolA.java

import java.util.Locale;

public enum EBoolA {
    FALSE,
    NULL,
    TRUE;

    public static final int fromBool(Boolean b) {
        for (EBoolA mb : values()) {
            StringBuilder sb = new StringBuilder();
            String name = sb.append(b).toString();

            if (mb.name().intern() == name.toUpperCase(Locale.US).intern()) {
                return mb.ordinal() / 2;
            }
        }
        throw new IllegalArgumentException("unknown boolean value: " + b);
    }
}

tongue-in-cheek "answer" to https://stackoverflow.com/questions/3793650/convert-boolean-to-int-in-java