Java 类和对象

 1     String bankAccountNumber;
 2     String name;
 3     double cunKuanYu_e;
 4     double cunKuan;
 5     double quKuan;
 6     double yu_E_ChaXun;
 7 
 8     void cunkuan(double cunkuan) {
 9         yu_E_ChaXun = cunKuanYu_e + cunkuan;
10         cunKuanYu_e = yu_E_ChaXun;
11         System.out.println(name + "你的账号为：" + bankAccountNumber + "的账户中存入" + cunkuan + "元，现有余额" + yu_E_ChaXun);
12     }
13 
14     void qukuan(double qukuan) {
15         yu_E_ChaXun = cunKuanYu_e - qukuan;
16         if (yu_E_ChaXun >= 0) {
17             cunKuanYu_e = yu_E_ChaXun;
18             System.out.println(name + "你的账号为：" + bankAccountNumber + "的账户中取出" + qukuan + "元，现有余额" + yu_E_ChaXun);
19         } else {
20             System.out.println(name + "你的账号为：" + bankAccountNumber + "的账户中余额不足！");
21         }
22     }
23 
24     void yu_echaxun(double ck, double qk) {
25 
26         double yu_E_ChaXun = cunKuanYu_e + ck - qk;
27         if (yu_E_ChaXun >= 0) {
28             cunKuanYu_e=yu_E_ChaXun;
29             System.out.println(name + "你的账号为：" + bankAccountNumber + "的账户中余额=" + yu_E_ChaXun);
30         } else {
31             System.out.println(name + "你的账号为：" + bankAccountNumber + "的账户中余额不足");
32         }
33     }

 1         Account ren1=new Account();
 2         ren1.bankAccountNumber="622848123456789";
 3         ren1.name="张三";
 4         ren1.cunKuanYu_e=587.54;
 5         
 6         ren1.qukuan(600.0);
 7         ren1.cunkuan(1000);
 8         ren1.yu_echaxun(280, 150);
 9         ren1.yu_echaxun( 0, 200);
10         
11         Account ren2=new Account();
12         ren2.bankAccountNumber="622848987654321";
13         ren2.name="李四";
14         ren2.cunKuanYu_e=87.54;
15         
16         ren2.yu_echaxun(600, 7000);
17         ren2.yu_echaxun(600,0);