Encapsulation Class-saving money

1  PackageCOM.HANQI.Z1P1;2 3  Public classAccount {4 5 String Bnumber;6     DoubleYuE;7     8Account (String Bnumber,DoubleYuE)9     {Ten         //Initialize One          This. Bnumber=Bnumber; A          This. Yue=YuE; -     } -      the      -      -     //Deposit -     //a method with no return value with parameters +     DoubleCunDoubleQianshu) -     { +         //Validation A         if(qianshu<0) at         { -System.out.println ("The money is wrong!" "); -              -}Else -         { -System.out.println ("Saved" +Qianshu); in          This. yue+=Qianshu; -         } to         return  This. YuE; +     } -     //Withdrawals the     // *     voidQuDoubleQianshu) $     {Panax Notoginseng         if(qianshu>YuE) -         { theSYSTEM.OUT.PRINTLN ("Insufficient balance!") "); +             return; A         } theSystem.out.println ("took" +Qianshu); +          This. yue-=Qianshu; -          $     } $     //methods with no parameters for return values -     DoubleGetyue () -     { the          -         return  This. YuE;Wuyi     } the      -          Wu      -}

1  PackageCOM.HANQI.Z1P1;2 3  Public classHomework0516 {4 5      Public Static voidMain (string[] args) {6         //TODO Auto-generated method stubs7              //test the function of the account class in the main class8         //member variables "account" and "Deposit balance", member methods are "deposit", "withdrawal" and "Balance Enquiry"9 TenAccount ac=NewAccount ("100001", 1000); One  AAc.cun (-100); -System.out.println ("Check balance:" +Ac.getyue ()); -Ac.qu (300); theSystem.out.println ("Check balance:" +Ac.getyue ()); -          -          -          +     } -  +}

Operation Result:

Encapsulation Class-saving money