java double和BigDecimal类型的加减乘除工具类_java double和bigdecimal 相乘

我不写代码，我只是代码的搬运工。

double和BigDecimal类型的加减乘除工具类

public class CalculateUtil {

	/**
	 * 数据处理除法
	 * 
	 * @return
	 */
	public static Double doubleDiv(Double one, Integer two) {
		Double res = one / two;
		return (double) Math.floor(res * 100) / 100;

	}

	/**
	 * 数据处理乘法
	 * 
	 * @return
	 */
	public static Double doubleMult(Double one, Integer two) {
		Double res = one * two;
		return (double) Math.floor(res * 100) / 100;

	}

	/**
	 * 数据处理-减法
	 * 
	 * @return
	 */
	public static Double doubleSub(Double one, Double two) {
		Double res = one - two;
		if (res < 0) {
			return 0.0;
		}
		return (double) Math.floor(res * 100) / 100;
	}

	/**
	 * 数据处理-加法
	 * 
	 * @return
	 */
	public static Double doubleAad(Double one, Double two) {
		Double res = one + two;
		return (double) Math.floor(res * 100) / 100;
	}

	/**
	 * double类型加密
	 * 
	 * @param param
	 * @return
	 */
	public static String doubleEncoder(Double param) {
		String ss = param.toString();
		String sss = ss.replace("0", "q").replace("1", "a").replace("2", "z").replace("3", "x").replace("4", "s")
				.replace("5", "w").replace("6", "e").replace("7", "d").replace("8", "c").replace("9", "v")
				.replace(".", "=");
		return sss;
	}
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/**
 * double类型解密
 * 
 * @param param
 * @return
 */
public static String doubleDecoder(String param) {
	return param.replace("q", "0").replace("a", "1").replace("z", "2").replace("x", "3").replace("s", "4")
			.replace("w", "5").replace("e", "6").replace("d", "7").replace("c", "8").replace("v", "9")
			.replace("=", ".");
}

/**
 * Integer 数据处理-减法
 * 
 * @param one
 * @param two
 * @return
 */
public static Integer integerSub(Integer one, Integer two) {
	Integer res = one - two;
	return res;
}

/**
 * 加法 BigDecimal
 * 
 * @param one
 * @param two
 * @return
 */
public static String BigAdd(String one, String two) {
	BigDecimal bignum1 = new BigDecimal(one);
	BigDecimal bignum2 = new BigDecimal(two);
	BigDecimal add = bignum1.add(bignum2);
	return add.toString();
}

/**
 * 减法 BigDecimal
 * 
 * @param one
 * @param two
 * @return
 */
public static String BigSub(String one, String two) {
	BigDecimal bignum1 = new BigDecimal(one);
	BigDecimal bignum2 = new BigDecimal(two);
	BigDecimal subtract = bignum1.subtract(bignum2);
	return subtract.toString();
}

/**
 * 乘法 BigDecimal
 * 
 * @param one
 * @param two
 * @return
 */
public static String BigMult(String one, String two) {
	BigDecimal bignum1 = new BigDecimal(one);
	BigDecimal bignum2 = new BigDecimal(two);
	BigDecimal multiply = bignum1.multiply(bignum2);
	multiply = new BigDecimal(multiply.toString());
	multiply = multiply.setScale(2, BigDecimal.ROUND_FLOOR);
	return multiply.toString();
}

/**
 * 除法 BigDecimal
 * 
 * @param one
 * @param two
 * @return
 */
public static String BigDiv(String one, String two) {
	BigDecimal bignum1 = new BigDecimal(one);
	BigDecimal bignum2 = new BigDecimal(two);
	BigDecimal divide = bignum1.divide(bignum2, 2, RoundingMode.HALF_UP);
	return divide.toString();
}

public static void main(String[] args) {
	String bigMult = CalculateUtil.BigDiv("12.401", "3");
	System.out.println(bigMult);
}
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