1 public class Caculator {
 2     public static float commission(int Headphone,int Shell,int Protector){
 3         int All = Headphone*80+Shell*10+Protector*8; float commission = 0; 
 4         if(All<1000&&All>=0) 
 5             commission = (float) (All*0.1); System.out.println("本次销售所得佣金为："+commission);
 6         else if(All>=1000 && All<=1800) 
 7             commission = (float) (100+(All-1000)*0.15);System.out.println("本次销售所得佣金为："+commission);
 8         else if(All>1800)
 9             commission = (float) (100+800*0.15+(All-1800)*0.2);  System.out.println("本次销售所得佣金为："+commission);
10         return commission; 
11     }
12     public static void main(String[] args){
13         while(true)
14         { 
15             int Headphone=0;
16             int Shell=0;
17             int Protector=0;
18             Scanner scanner=new Scanner(System.in) ;
19             try{
20                     System.out.println("请输入耳机的销售情况：");
21                     Headphone=scanner.nextInt();
22                     System.out.println("请输入手机壳的销售情况：");
23                     Shell=scanner.nextInt();
24                     System.out.println("请输入手机膜的销售情况：");
25                     Protector=scanner.nextInt();
26                     scanner.close();
27             }catch(Exception e){
28                 System.out.println("出现异常："+e);
29                 System.exit(-1);
30             }
31             if(Headphone>=0&&Shell>=0&&Protector>=0)
32                 commission(Headphone,Shell,Protector);
33             else
34                 System.out.println("输入有误，请重新输入！");             
35         }
36     }
37 }

 1 import org.junit.Test;    
 2 import static org.junit.Assert.assertEquals;
 3 import java.util.Arrays;  
 4 import java.util.Collection;    
 5 import org.junit.runner.RunWith;  
 6 import org.junit.runners.Parameterized;  
 7 import org.junit.runners.Parameterized.Parameters; 
 8 
 9 @RunWith(Parameterized.class)
10 
11 public class test1Test {
12 
13      private int a;
14      private int b;
15      private int x ;
16      private float expected;
17      @Parameters
18      @SuppressWarnings("unchecked")  
19      public static Collection date(){ 
20          Object[][] object={{1,6,9,21.2f},{16, 5, 9,160.3f},{15, 6, 5,145.0f},{30, 11, 22,397.2f}};  
21          return Arrays.asList(object);
22      }
23      public test1Test(int a,int b,int x,float expected)
24      {
25          this.a=a;
26          this.b=b;
27          this.x=x;
28          this.expected=expected;
29      }
30 
31     @Test
32     public void testAdd() {
33         Caculator c=new Caculator();
34          float result=0;
35          result=c.ca(a,b,x);
36          System.out.println(result);
37          assertEquals(expected,result,0.01);
38 }
39 }