bankaccount.java

一些java的小程序.包括排序,一些bank的小计算,

public class BankAccount
{
	// Declare instance variables accountNumber, name, balance.


	//[add here]
	
	private int accountNumber;
	private String name;
	private double balance;

	// Leave this declaration
	private static int accountCount = 1;		// Start account numbers at 1.

	public BankAccount(String ownersName, double openingBalance)
	{
		// Assign unique account number to this instance of bank account
		accountNumber = accountCount++;

		// initialize instance variables.
		//[add here]
		name = ownersName;
		balance = openingBalance;
	}

	// insert get and set methods for the class here.
	// [add here]
	public void setName(String ownersName)
	{
		name = ownersName;
	}
	
	public void setBalance(double aBalance)
	{
		balance = aBalance;
	}
	
	public String getName()
	{
		return name;
	}
	
	public double getBalance()
	{
		return balance;
	}

	// Withdraw an amount from this account
	public void withdraw(double amount)
	{
		double tempBalance = balance;
		if((tempBalance - amount) >= 0)
		{
			balance -= amount;
		}
		
	}

	// Deposit an amount to this account
	public void deposit(double amount)
	{
		balance += amount;
	}

	// This method returns a String representing the state of this account.
	public String toString()
	{
		// create a string to return here.
		StringBuffer info = new StringBuffer(10);
		info.append("Account Number: ");
		info.append(accountNumber);
		info.append('\n');
		info.append(" Owner's Name: ");
		info.append(name);
		info.append("\n");
		info.append(" Balance: ");
		info.append(balance);
		
		return info.toString();
	}

}