simplebankdemo.java

来自「JAVA程序设计课程中各章节的程序实例。」· Java 代码 · 共 44 行

/**
*A very simple bank program in Java
* in order to demonstrates OOP syntax in Java
*2005.2.23. xhcprince
*/

class BankAccount
{
	private double balance;

	public BankAccount(double openAccount)
	{
		balance = openAccount;
	}

	public void deposit(double amount)
	{
		balance += amount;
	}

	public void withdraw(double amount)
	{
		balance -= amount;
	}

	public void display()
	{
		System.out.println("Balance = " + balance);
	}
}

class simpleBankDemo
{
	public static void main(String args[])
	{
		BankAccount obj = new BankAccount(100);

		obj.deposit(100);
		obj.display();

		obj.withdraw(20);
		obj.display();
	}
}