数字字符加减乖除运算，数字字符运算,import java.

数字字符加减乖除运算，数字字符运算,import java.

import java.math.BigDecimal;import java.text.ParseException;import java.text.SimpleDateFormat;import java.util.Calendar;import java.util.Date;import java.util.regex.Matcher;import java.util.regex.Pattern;import org.aspectj.org.eclipse.jdt.internal.compiler.batch.Main;/** * 小学数学老师类  */@SuppressWarnings("unused")public class MyGodBasic {    /**     * 判断数据字符是否是数字（能转成数字的）     * @param str 数字字符     * @return 是数字字符返回true,不是返回false     */    public static boolean isNumber(String strNumber){        boolean bolResult = false;        BigDecimal temp;        try {            temp = new BigDecimal(strNumber);            bolResult = true;        } catch (NumberFormatException e) {            e.getStackTrace();        }        return bolResult;    }    /**     * 数学相加     * @param augend加数     * @param augend2 被加数     * @return strResult     */    public static String addStr(String augend, String augend2) {        String strResult = IBasic.NOT_NUMBER_STRING;        if(isNumber(augend)&&isNumber(augend2)){            BigDecimal bdAugend = new BigDecimal(augend);            BigDecimal bdAugend2 = new BigDecimal(augend2);            bdAugend = bdAugend.add(bdAugend2);            strResult = bdAugend.toString();        }        return strResult;    }    /**     * 数据相减     * @param augend减数     * @param augend2被减数     * @return augend-augend2     */    public static String reduceStr(String augend, String augend2) {        String strResult = IBasic.NOT_NUMBER_STRING;        if(isNumber(augend)&&isNumber(augend2)){            BigDecimal bdAugend = new BigDecimal(augend);            BigDecimal bdAugend2 = new BigDecimal(augend2);            bdAugend = bdAugend.subtract(bdAugend2);            strResult = bdAugend.toString();        }        return strResult;    }    /**     * String数字相乘     * @param multiplicand1 乘数1     * @param multiplicand2 乘数2     * @param scale小数保留位数     * @return 运算结果     */    public static String multiplyStr(String multiplicand1,            String multiplicand2, int scale) {        String strResult = IBasic.NOT_NUMBER_STRING;        if(isNumber(multiplicand1)&&isNumber(multiplicand2)){            BigDecimal bdCand1 = new BigDecimal(multiplicand1);            BigDecimal bdCand2 = new BigDecimal(multiplicand2);            bdCand1 = bdCand1.multiply(bdCand2);            strResult = bdCand1.setScale(scale, BigDecimal.ROUND_HALF_UP).toString();        }        return strResult;    }    /**     * String数字相除     * @param divisor除数     * @param dividend被除数     * @param scale小数保留位数     * @return 运算结果     */    public static String divideStr(String divisor, String dividend, int scale) {        String strValue = IBasic.NULL_TO_ZERO;        if(isNumber(divisor)&&isNumber(dividend)){            if(isNumberAndNotZero(dividend)){                    BigDecimal bdCand1 = new BigDecimal(divisor);                    BigDecimal bdCand2 = new BigDecimal(dividend);                    bdCand1 = bdCand1.divide(bdCand2, scale, BigDecimal.ROUND_HALF_UP);                    strValue = bdCand1.toString();                }else{                strValue=IBasic.DIVIDEND_IS_ZERO;            }        }        return strValue;    }    /**     * 判断数字字符是否是数字且不等于0     * @param strNumb     * @return     */    public static boolean isNumberAndNotZero(String strNumb){        boolean bolResult = false;        int intResult = 0;        if(!isNull(strNumb)){            if(isNumber(strNumb)){                BigDecimal objBigDecimal = new BigDecimal(strNumb);                BigDecimal objBigDecimal2 = new BigDecimal(IBasic.NUMBER_ZERO);                intResult = objBigDecimal.compareTo(objBigDecimal2);            }        }        if(intResult!=0){            bolResult = true;        }        return bolResult;    }    /**     * 判断数字字符是否是数字且等于0     * @param strNumb     * @return     */    public static boolean isNumberAndZero(String strNumb){        boolean bolResult = false;        int intResult = 0;        if(!isNull(strNumb)){            if(isNumber(strNumb)){                BigDecimal objBigDecimal = new BigDecimal(strNumb);                BigDecimal objBigDecimal2 = new BigDecimal(IBasic.NUMBER_ZERO);                intResult = objBigDecimal.compareTo(objBigDecimal2);            }        }        if(intResult==0){            bolResult = true;        }        return bolResult;    }}//该片段来自于http://byrx.net