package?tax;

import?java.util.Scanner;

public?class?TaxCalculator?{
	public?double?getIncome（String?sinput）?throws?TaxException?{
		//?稅前收入
		double?pretaxIncome?=?0;
		//?應(yīng)納稅所得額
		double?taxableIncome?=?0;
		//?個人所得稅
		double?tax?=?0;
		//?實際收入
		double?realIncome?=?0;

		//?輸入字符串轉(zhuǎn)為稅前收入
		try?{
			if?（sinput?==?null）?{
				throw?new?TaxException（TaxException.MUST_BE_NUMBER）;
			}
			pretaxIncome?=?Double.parseDouble（sinput）;
			if?（pretaxIncome?				throw?new?TaxException（TaxException.MUST_NOT_LESS_THAN_ZERO）;
			}?else?if?（pretaxIncome?>?1000000）?{
				throw?new?TaxException（TaxException.MUST_NOT_RATHER_THAN_MILLION）;
			}
		}?catch?（NumberFormatException?e）?{
			throw?new?TaxException（TaxException.MUST_BE_NUMBER）;
		}

		//?計算應(yīng)納稅所得額
		taxableIncome?=?pretaxIncome?-?TaxParameters.TAX_THRESHOLD;

		//?計算個人所得稅
		if?（taxableIncome?<=?0）?{
			tax?=?0;
		}?else?if?（taxableIncome?>?0?&&?taxableIncome?<=?TaxParameters.MaxBound.LEVEL1）?{
			tax?=?taxableIncome?*?TaxParameters.Rate.LEVEL1?-?TaxParameters.QuickDeduction.LEVEL1;
		}?else?if?（taxableIncome?>?TaxParameters.MaxBound.LEVEL1?&&?taxableIncome?<=?TaxParameters.MaxBound.LEVEL2）?{
			tax?=?taxableIncome?*?TaxParameters.Rate.LEVEL2?-?TaxParameters.QuickDeduction.LEVEL2;
		}?else?if?（taxableIncome?>?TaxParameters.MaxBound.LEVEL2?&&?taxableIncome?<=?TaxParameters.MaxBound.LEVEL3）?{
			tax?=?taxableIncome?*?TaxParameters.Rate.LEVEL3?-?TaxParameters.QuickDeduction.LEVEL3;
		}?else?if?（taxableIncome?>?TaxParameters.MaxBound.LEVEL3?&&?taxableIncome?<=?TaxParameters.MaxBound.LEVEL4）?{
			tax?=?taxableIncome?*?TaxParameters.Rate.LEVEL4?-?TaxParameters.QuickDeduction.LEVEL4;
		}?else?if?（taxableIncome?>?TaxParameters.MaxBound.LEVEL4?&&?taxableIncome?<=?TaxParameters.MaxBound.LEVEL5）?{
			tax?=?taxableIncome?*?TaxParameters.Rate.LEVEL5?-?TaxParameters.QuickDeduction.LEVEL5;
		}?else?if?（taxableIncome?>?TaxParameters.MaxBound.LEVEL5?&&?taxableIncome?<=?TaxParameters.MaxBound.LEVEL6）?{
			tax?=?taxableIncome?*?TaxParameters.Rate.LEVEL6?-?TaxParameters.QuickDeduction.LEVEL6;
		}?else?if?（taxableIncome?>?TaxParameters.MaxBound.LEVEL6）?{
			tax?=?taxableIncome?*?TaxParameters.Rate.LEVEL7?-?TaxParameters.QuickDeduction.LEVEL7;
		}

		//?實際收入
		realIncome?=?pretaxIncome?-?tax;
		return?realIncome;
	}

}

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????文件?????1224090??2018-12-28?09:20??TIM圖片20181228143913.png
?????目錄???????????0??2018-12-28?14:34??TaxTest\
?????文件?????????353??2018-12-28?14:34??TaxTest\.classpath
?????文件?????????383??2018-12-28?14:34??TaxTest\.project
?????目錄???????????0??2018-12-28?14:34??TaxTest\bin\
?????目錄???????????0??2018-12-28?14:34??TaxTest\bin\tax\
?????文件????????1536??2018-12-28?14:34??TaxTest\bin\tax\TaxCalculator.class
?????文件????????2938??2018-12-28?14:34??TaxTest\bin\tax\TaxCalculatorTest.class
?????文件?????????808??2018-12-28?14:34??TaxTest\bin\tax\TaxException.class
?????文件?????????415??2018-12-28?14:34??TaxTest\bin\tax\TaxParameters$MaxBound.class
?????文件?????????427??2018-12-28?14:34??TaxTest\bin\tax\TaxParameters$QuickDeduction.class
?????文件?????????435??2018-12-28?14:34??TaxTest\bin\tax\TaxParameters$Rate.class
?????文件?????????348??2018-12-28?14:34??TaxTest\bin\tax\TaxParameters.class
?????目錄???????????0??2018-12-28?14:34??TaxTest\src\
?????目錄???????????0??2018-12-28?14:34??TaxTest\src\tax\
?????文件????????2439??2018-12-28?14:34??TaxTest\src\tax\TaxCalculator.java
?????文件?????????501??2018-12-28?14:34??TaxTest\src\tax\TaxException.java
?????文件?????????658??2018-12-28?14:34??TaxTest\src\tax\TaxParameters.java
?????目錄???????????0??2018-12-28?14:34??TaxTest\test\
?????目錄???????????0??2018-12-28?14:34??TaxTest\test\tax\
?????文件????????3970??2018-12-28?14:34??TaxTest\test\tax\TaxCalculatorTest.java