Java tutorial
//package com.java2s; //License from project: Open Source License import android.text.TextUtils; import java.text.NumberFormat; import java.text.ParseException; public class Main { public static double getAmount(String amountStr) { if (TextUtils.isEmpty(amountStr)) return 0; else { if (amountStr.startsWith("+")) amountStr = amountStr.substring(1); try { return NumberFormat.getInstance().parse(amountStr).doubleValue(); } catch (ParseException e) { return 0; } } } }