银行账户管理

实验结果

package 类的继承;

 import java.util.Scanner; 
 import java.math.*; 
 class Account{ 
     String name; 
     static int count=0; 
     static String[] opea=new String[100000]; 
     static double[] val=new double[1000]; 
     double balance; 
     static  String accountID="1234567891011121314"; 
     String id; 
     public Account(String name,double balance,String id){ 
         this.set(name,balance,id); 
     } 
     public void set(String name,double balance,String id){ 
         this.name=name; 
         this.balance=balance; 
         if(id.length()>18||id.length()<1){ 
             System.out.println("Input ID Error !"); 
             return ; 
         } 
         this.id=id; 
         accountID=add(accountID); 
     } 
     public void inquire(){ 
         System.out.println("-------账户余额信息 -------"); 
         System.out.println("balance : "+this.balance); 
         for(int i=0;i<count;i++){ 
             System.out.println(opea[i]+" "+val[i]); 
         } 
     } 
     public String getName(){ 
         return "AccoutName : "+this.name+" AccountID "+this.accountID+" ID: "+id.substring(0,6)+"********"+id.substring(14,id.length()); 
     } 
     public double balance(){ 
         return this.balance; 
     } 
     public boolean put(double value){ 
         this.balance+=value; 
         if(value==0){ 
             return false; 
         } 
         opea[count]="put"; 
         val[count++]=value; 
         return true; 
     } 
     public double get(double value){ 
         if(value>this.balance){ 
             System.out.println("lack of balance !!!"); 
             return 0; 
         } 
         opea[count]="get"; 
         val[count++]=value; 
         this.balance-=value; 
         return value; 
     } 
     public boolean exit(){ 
         return true; 
     } 
     public static String add(String str){ 
             char[] c=new char[19]; 
             int leng=19; 
             int sign=0,i; 
             for(i=0;i<19;i++){ 
                 leng=leng-1; 
                 int sum=0; 
                 sum+=str.charAt(leng)-'0'; 
                 if(i==0){ 
                     sum+=1; 
                 } 
                 sum+=sign; 
                 c[leng]=(char)(sum+48); 
                 if(sum>=10){ 
                     sign=1; 
                     c[leng]=(char)(sum%10+48); 
                 }else{ 
                     sign=0; 
                 } 
             } 
             return String.valueOf(c); 
     } 
 } 
 

package 类的继承;
class Main{ 
    public static void main(String[] args){ 
        Account p=new Account("infinite",4000,"1111111111111111"); 
        System.out.println("-------账户信息-------"); 
        System.out.printf(p.getName()); 
        System.out.println(); 
        System.out.println("balance : "+p.balance()); 
        p.put(153213); 
        p.inquire(); 
        System.out.println(); 
         
       
    } 
}