public String wagesCalculate(double key) {// 小数保留两位DecimalFormat df = new DecimalFormat("######0.00");// 养老 22% 8%double endowment_company = key * 0.22;double endowment_personal = key * 0.08;// 医疗 6% 1%double medical_company = key * 0.06;double medical_personal = key * 0.01;// 工伤 0.5%double injury_company = key * 0.005;// 住房公积金 7% 7%double fund_company = key * 0.07;double fund_personal = key * 0.07;String fundCompany = df.format(fund_company);String fundPersonal = df.format(fund_personal);// 社保后工资double wages = key - endowment_personal - medical_personal- fund_personal;// 纳税工资，3500起征点double taxes_wages = wages - 3500;double taxes = 0;// 超额累进税率计算个人所得税if (taxes_wages <= 1500) {taxes = taxes_wages * 0.03;} else if (taxes_wages > 1500 && taxes_wages <= 4500) {taxes = taxes_wages * 0.1 - 105;} else if (taxes_wages > 4500 && taxes_wages <= 9000) {taxes = taxes_wages * 0.2 - 555;} else if (taxes_wages > 9000 && taxes_wages <= 35000) {taxes = taxes_wages * 0.25 - 1005;} else if (taxes_wages > 35000 && taxes_wages <= 55000) {taxes = taxes_wages * 0.3 - 2775;} else if (taxes_wages > 55000 && taxes_wages <= 80000) {taxes = taxes_wages * 0.35 - 5505;} else if (taxes_wages > 80000) {taxes = taxes_wages * 0.45 - 13505;}// 实际工资double actual_wages = wages - taxes;String returnStr = "                     公司                     个人"+ System.getProperty("line.separator") + "养老：    "+ endowment_company + "    " + endowment_personal+ System.getProperty("line.separator") + "医疗：    "+ medical_company + "    " + medical_personal+ System.getProperty("line.separator") + "工伤：    "+ injury_company + System.getProperty("line.separator")+ "公积金：" + fundCompany + "    " + fundPersonal+ System.getProperty("line.separator") + "个人所得税：" + taxes+ System.getProperty("line.separator")+ "----------------------------------------------"+ System.getProperty("line.separator") +"税前月薪："+key+"  税后月薪：     "+ actual_wages;return returnStr;}