package?com.cee.common.expression;

//=========================================================================================???
//標(biāo)準(zhǔn)運算符號的實現(xiàn)類：???
//????命名約定：???
//????單目運算符的實現(xiàn)類以?S?開頭???
//????雙目運算符的實現(xiàn)類一?D?開頭????
//================================================================================???
//第三級別實現(xiàn)類==================================================================???
//加法運算實現(xiàn)類???
public?class?DAdd?implements?DOperator?{
	public?object?calculate（object?op_num1?object?op_num2）
			throws?DataInvalidException?{
		try?{
			double?x?=?Double.parseDouble（op_num1.toString（））;//?取被加數(shù)
			double?y?=?Double.parseDouble（op_num2.toString（））;//?取加數(shù)
			double?result?=?x?+?y;
			return?new?Double（result）;
		}?catch?（Exception?e）?{
			throw?new?DataInvalidException（“您輸入的字符串表達(dá)式，不符合格式要求，“
					+?“導(dǎo)致無法計算，請檢測您的輸入表達(dá)式“）;
		}//?end?try-catch
	}//?end?calculate
}//?end?DAdd

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件????????934??2011-07-20?16:44??expression\CVS\Entries

?????文件?????????39??2011-07-20?16:44??expression\CVS\Repository

?????文件?????????43??2011-07-20?16:44??expression\CVS\Root

?????文件???????1089??2011-07-15?13:36??expression\DAdd.java

?????文件????????173??2011-07-15?13:31??expression\DataInvalidException.java

?????文件????????636??2011-07-15?13:36??expression\DDec.java

?????文件????????630??2011-07-15?13:39??expression\DDiv.java

?????文件????????638??2011-07-15?13:41??expression\DMod.java

?????文件????????831??2011-07-15?13:38??expression\DMul.java

?????文件???????1053??2011-07-15?13:16??expression\DOperator.java

?????文件????????656??2011-07-15?13:43??expression\DPow.java

?????文件????????620??2011-07-15?13:50??expression\SCos.java

?????文件????????717??2011-07-15?13:45??expression\SDao.java

?????文件????????544??2011-07-15?13:54??expression\SExp.java

?????文件????????551??2011-07-15?14:02??expression\SLn.java

?????文件????????546??2011-07-15?13:55??expression\SLog.java

?????文件????????651??2011-07-15?13:58??expression\SN.java

?????文件???????1037??2011-07-15?13:18??expression\SOperator.java

?????文件????????540??2011-07-15?13:47??expression\SSin.java

?????文件????????544??2011-07-15?13:46??expression\SSqrt.java

?????文件????????619??2011-07-15?13:51??expression\STan.java

?????文件??????20121??2011-07-15?15:15??expression\Strexpression.java

?????文件????????540??2011-07-15?14:00??expression\SX2.java

?????文件????????546??2011-07-15?13:59??expression\SX3.java

?????目錄??????????0??2011-07-20?16:44??expression\CVS

?????目錄??????????0??2011-07-20?16:44??expression

-----------?---------??----------?-----??----

????????????????34298????????????????????26