caculator.java

计算税收的程序

package TaxCaculator;

import java.io.IOException;

public class Caculator
{  static Parameter para=new Parameter();
 public static void main(String[] args) throws IOException 
{  double income=para.inputIncome();
   double free=para.inputFree();
   double P1=para.inputPer1();
   double P2=para.inputPer2();
   double P3=para.inputPer3();
   double P4=para.inputPer4();
   double P5=para.inputPer5();
    double tax=0; 
    double taxBase;   taxBase=income-free; 
    if (taxBase>=20000) 
    { 
    	taxBase-=20000; 
         tax+=taxBase*P5*0.01; 
         taxBase=20000;  
    } 
    if (taxBase>=5000)  
    { 
    	taxBase-=5000; 
         tax+=taxBase*P4*0.01; 
         taxBase=5000;   
    } 
    if (taxBase>=2000)  
    { 
    	taxBase-=2000; 
        tax+=taxBase*P3*0.01; 
        taxBase=2000;    
    } 
    if (taxBase>=500)  
    { 
    	taxBase-=500; 
        tax+=taxBase*P2*0.01; 
        taxBase=500;   
    }  
     if (taxBase>=0) 
     { 
        tax+=taxBase*P1*0.01; 
     } 
     else
	  {
		  System.out.println("你不需要交税");
		  return;
	  }
System.out.println("应交税额:"+tax); 
} 
}