在Java編程中,賬務類(Accounting Class)是非常重要的一個類別,它可以用來實現日常賬務的管理和操作。下面我們來介紹一下如何編寫和測試Java賬務類。
首先,我們需要定義一個Accounting類,該類至少應該包含以下幾個成員變量:
public class Accounting { private String name; // 賬戶名 private int balance; // 賬戶余額 private int income; // 賬戶收入 private int expense; // 賬戶支出 }
接下來,我們需要編寫一些操作方法,以支持賬務類的管理和操作,例如存款、取款、查詢余額等。下面是一些常用的操作方法:
public void deposit(int amount) { this.balance += amount; this.income += amount; } public void withdraw(int amount) { if (this.balance< amount) { throw new RuntimeException("余額不足"); } this.balance -= amount; this.expense += amount; } public int getBalance() { return this.balance; } public int getIncome() { return this.income; } public int getExpense() { return this.expense; }
在編寫完成賬務類后,我們需要對其進行測試。一般來說,我們會編寫一些測試用例,以測試賬戶類的各種操作是否實現正確。下面是一些測試用例的示例代碼:
public class AccountingTest { @Test public void testAccounting() { Accounting account = new Accounting(); account.deposit(1000); assertEquals(1000, account.getBalance()); account.withdraw(500); assertEquals(500, account.getBalance()); account.deposit(100); assertEquals(600, account.getBalance()); assertEquals(1100, account.getIncome()); assertEquals(500, account.getExpense()); } @Test(expected = RuntimeException.class) public void testWithdraw() { Accounting account = new Accounting(); account.withdraw(1000); } }
以上就是Java賬務類的簡單介紹,希望可以對Java初學者有所幫助。