ADD file via upload

Bank.java

@@ -0,0 +1,47 @@
+package xue;
+
+public class Bank {
+    private  static int num=10000;
+    private long ide;
+    private double money;
+    private String name,time;
+    public Bank(long ide_init,double money_init,String name_init,String time_init)
+    {
+        ide=ide_init;money=money_init;name=name_init;time=time_init;
+        System.out.println("创建账户成功！");
+        num++;
+    }
+    public void income(double save)
+    {
+        if(save>0)
+        {
+            money+=save;
+            System.out.println("成功存款"+save+"元！");
+        }
+        else
+            System.out.println("存款失败！");
+    }
+    public double takeout(double take)
+    {
+        if(take<=money)
+        {
+            money-=take;
+            System.out.println("取款成功！");
+            return take;
+        }
+        else
+        {
+            System.out.println("取款失败！");
+            return 0;
+        }
+    }
+    public void display()
+    {
+        System.out.println("您的银行卡号为："+num);
+        System.out.println("姓名："+name);
+        System.out.println("身份证号："+ide);
+        System.out.println("您当前的余额："+money+"元！");
+        System.out.println("银行卡创建时间："+time);
+    }
+
+}