Como somar valor moeda em java?

package br.com.danieldias.moneyTest;

import javax.money.CurrencyUnit;
import javax.money.Monetary;
import javax.money.MonetaryAmount;

import org.javamoney.moneta.Money;

public class Main {
    public static void main(String[] args) {

    CurrencyUnit unit = Monetary.getCurrency("BRL");
    MonetaryAmount amont = Money.of(1.125_65, unit);
    MonetaryAmount amont2 = Money.of(2.025_25, unit);
    MonetaryAmount soma = amont.add(amont2);
    System.out.println(soma);
    }
}

// 1.125,65 + 2.025,25		
	BigDecimal n1 = new BigDecimal("1.125,65".replace(".", "").replace(",", "."));
	BigDecimal n2 = new BigDecimal("2.025,25".replace(".", "").replace(",", "."));		
	BigDecimal soma = n1.add(n2);		
	NumberFormat nF = NumberFormat.getCurrencyInstance();		
	System.out.println(nF.format(Double.valueOf(soma.toString())));