BigDecimal精度问题

import java.math.BigDecimal;
import java.math.RoundingMode;
import java.text.DecimalFormat;

public class Test {

/**
* 保留2位小数
*
* @param money
*            金额
* @param scale
*            精度
* @return
*/
public static String ratioTransform(double money) {
BigDecimal moneyDev = new BigDecimal(money).setScale(2,
RoundingMode.HALF_UP);

return moneyDev.toString();
}

/**
* 保留2位小数
*
* @param money
*            金额
* @param scale
*            精度
* @return
*/
public static String ratioTransform2(double money) {
DecimalFormat df = new DecimalFormat("0.00");
df.setRoundingMode(RoundingMode.HALF_UP);
return df.format(money);
}

public static void main(String[] arg) {
/** 输出14.00 */
System.out.println(ratioTransform(14.00));
System.out.println(ratioTransform2(14.00));

/** 输出14.12 */
System.out.println(ratioTransform(14.115));
System.out.println(ratioTransform2(14.115));

/** 输出12345.68 */
System.out.println(ratioTransform(12345.6789));
System.out.println(ratioTransform2(12345.6789));
}
}