public class MyFixedToken implements TokenType {

    private final String tokenIdentifier;
    private final int fractionDigits;

    public MyFixedToken(String tokenIdentifier, int fractionDigits) {
        this.tokenIdentifier = tokenIdentifier;
        this.fractionDigits = fractionDigits;
    }

    @Override
    public int getFractionDigits() {
        return fractionDigits;
    }

    @NotNull
    @Override
    public Class<?> getTokenClass() {
        return this.getClass();
    }

    @NotNull
    @Override
    public String getTokenIdentifier() {
        return tokenIdentifier;
    }

    @NotNull
    @Override
    public BigDecimal getDisplayTokenSize() {
        return BigDecimal.ONE.scaleByPowerOfTen(-fractionDigits);
    }

    @Override
    public boolean equals(Object obj) {
        MyFixedToken other = null;
        if(obj instanceof MyFixedToken) {
            other = (MyFixedToken) obj;
            if(this.tokenIdentifier.equals(other.getTokenIdentifier()))
                return true;
        }
        return false;
    }
}