creditcard-creditcard.html

来自「经典的数据结构源代码（java 实现）」· HTML 代码 · 共 52 行

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<html><head><title>Code Fragment</title></head><body text=#000000><center></center><br><br><dl><dd><pre><font color=#8000a0>public</font> <font color=#8000a0><font color=#ff8000>class</font> </font>CreditCard {  <font color=#ff0080>// Instance variables:</font>  <font color=#8000a0><font color=#8000a0>private</font> </font><font color=#8000a0>String</font> number;  <font color=#8000a0><font color=#8000a0>private</font> </font><font color=#8000a0>String</font> name;  <font color=#8000a0><font color=#8000a0>private</font> </font><font color=#8000a0>String</font> bank;  <font color=#8000a0><font color=#8000a0>private</font> </font><font color=#8000a0>double</font> balance;  <font color=#8000a0><font color=#8000a0>private</font> </font><font color=#8000a0>int</font> limit;  <font color=#ff0080>// Constructor:</font>  <font color=#0000ff>CreditCard</font>(<font color=#8000a0>String</font> no, <font color=#8000a0><font color=#8000a0>String</font> </font>nm, <font color=#8000a0><font color=#8000a0>String</font> </font>bk, <font color=#8000a0><font color=#8000a0>double</font> </font>bal, <font color=#8000a0><font color=#8000a0>int</font> </font>lim) {    number = no;    name = nm;    bank = bk;    balance = bal;    limit = lim;  }  <font color=#ff0080>// Accessor methods:</font>  <font color=#8000a0><font color=#8000a0>public</font> </font><font color=#8000a0>String</font> <font color=#0000ff>getNumber</font>() { <font color=#8000a0><font color=#ff8000>return</font> </font>number; }  <font color=#8000a0><font color=#8000a0>public</font> </font><font color=#8000a0>String</font> <font color=#0000ff>getName</font>() { <font color=#8000a0><font color=#ff8000>return</font> </font>name; }  <font color=#8000a0><font color=#8000a0>public</font> </font><font color=#8000a0>String</font> <font color=#0000ff>getBank</font>() { <font color=#8000a0><font color=#ff8000>return</font> </font>bank; }  <font color=#8000a0><font color=#8000a0>public</font> </font><font color=#8000a0>double</font> <font color=#0000ff>getBalance</font>() { <font color=#8000a0><font color=#ff8000>return</font> </font>balance; }  <font color=#8000a0><font color=#8000a0>public</font> </font><font color=#8000a0>int</font> <font color=#0000ff>getLimit</font>() { <font color=#8000a0><font color=#ff8000>return</font> </font>limit; }  <font color=#ff0080>// Action methods:</font>  <font color=#8000a0><font color=#8000a0>public</font> </font><font color=#8000a0>boolean</font> <font color=#0000ff>chargeIt</font>(<font color=#8000a0>double</font> price) { <font color=#ff0080>// Make a charge </font>    <font color=#ff8000>if</font><font color=#0000ff> </font>(price + balance &gt;<font color=#0000ff> </font>(<font color=#8000a0>double</font>) limit)       <font color=#8000a0><font color=#ff8000>return</font> </font>false; <font color=#ff0080>// There is not enough money left to charge it</font>    balance += price;    <font color=#8000a0><font color=#ff8000>return</font> </font>true; <font color=#ff0080>// The charge goes through in this case</font>  }  <font color=#8000a0><font color=#8000a0>public</font> </font><font color=#8000a0>void</font> <font color=#0000ff>makePayment</font>(<font color=#8000a0>double</font> payment) { <font color=#ff0080>// Make a payment</font>    balance -= payment;   }  <font color=#8000a0><font color=#8000a0>public</font> </font><font color=#8000a0>static</font> <font color=#8000a0><font color=#8000a0>void</font> </font><font color=#0000ff>printCard</font>(CreditCard c) { <font color=#ff0080>// Print a card's information </font>    System.out.<font color=#0000ff>println</font>(<font color=#008000>"Number = "</font> + c.<font color=#0000ff>getNumber</font>());    System.out.<font color=#0000ff>println</font>(<font color=#008000>"Name = "</font> + c.<font color=#0000ff>getName</font>());    System.out.<font color=#0000ff>println</font>(<font color=#008000>"Bank = "</font> + c.<font color=#0000ff>getBank</font>());    System.out.<font color=#0000ff>println</font>(<font color=#008000>"Balance = "</font> + c.<font color=#0000ff>getBalance</font>()); <font color=#ff0080>// Implicit cast</font>    System.out.<font color=#0000ff>println</font>(<font color=#008000>"Limit = "</font> + c.<font color=#0000ff>getLimit</font>()); <font color=#ff0080>// Implicit cast</font>  }}</dl></body></html>

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