Job 5.2

 PackageTest;ImportJava.io.BufferedReader;ImportJava.io.InputStreamReader;ImportJava.util.Scanner; Public classSizeyunsuan { Public Static voidMain (string[] args) {String condition= ""; intx, y;        String Z, P,P1; Scanner INR=NewScanner (system.in); BufferedReader in=NewBufferedReader (NewInputStreamReader (system.in));  Do{System.out.print ("Please enter the first number:") ;  while(true)        {            Try{p=In.readline (); X=Integer.parseint (P); if(x>-1000| | x<1000) {System.out.println ("\ n") ; }                 Break; }            Catch(Exception e) {System.out.println ("\ n Error") ; }} System.out.print ("Please enter a second number:") ;  while(true)        {                        Try{P1=In.readline (); Y=Integer.parseint (p1); if(y>-1000| | y<1000) {System.out.println ("\ n") ; }                 Break; }            Catch(Exception e) {System.out.println ("\ n Error") ; }} System.out.println ("Please enter operator (+,-, *,/):"); Z=Inr.nextline (); System.out.println ("\ n" +x+ "" +z+ "" +y+ "="); Core Test=Newcore ();        Test.yunsuan (z, x, y); System.out.print ("Do you want to continue?" Y: Continue, any character: End "); Condition=Inr.nextline (); } while("Y". Equals (condition)); }}

 PackageTest; Public classCore { Public voidYunsuan (String cc,DoubleADoubleb) {js test1=NewJS (); if(Cc.equals ("+") {Test1.jia (A, b); }      Else if(Cc.equals ("-") {Test1.jian (A, b); }     Else if(Cc.equals ("*") {Test1.cheng (A, b); }     Else if(Cc.equals ("/")) {                         if(b! = 0) {Test1.chu (A, b); }                 Else{System.out.println ("Dividend can't be 0!" "); Throw NewArithmeticException (); }         }      Else{System.out.println ("Operator does not match! "); }    }}

 PackageTest; Public classJS {/**     * @paramargs*/      Public Static  DoubleJiaDoubleADoubleb) {DoubleResult=0; Result=a+b; System.out.println (A+"+"+b);        SYSTEM.OUT.PRINTLN (result); returnresult; }                Public Static  DoubleJianDoubleADoubleb) {DoubleResult=0; Result=a-b; System.out.println (A+"-"+b);        SYSTEM.OUT.PRINTLN (result); returnresult; }                Public Static  DoubleChengDoubleADoubleb) {DoubleResult=0; Result=a*b; System.out.println (A+"*"+b);        SYSTEM.OUT.PRINTLN (result); returnresult; }                Public Static  DoubleChuDoubleADoubleb) {DoubleResult=0; Result=a/b; System.out.println (A+"/"+b);        SYSTEM.OUT.PRINTLN (result); returnresult; }}

 PackageTest;Import Staticorg.junit.assert.*;Importorg.junit.Test; Public classjstest {@Test Public voidtestJia1 () {DoubleA; JS Test2=NewJS (); A=js.jia (5,2); } @Test Public voidTestJian1 () {Doubleb; JS Test2=NewJS (); b=js.jian (10,1); } @Test Public voidTestChen1 () {DoubleC; JS Test2=NewJS (); C=js.cheng (8,3); } @Test Public voidtestChu1 () {DoubleD; JS Test2=NewJS (); D=js.chu (6,2); }}

My little buddy. 06 Liu Zehao http://www.cnblogs.com/wsnd/

Job 5.2