package?ExceptionDemo;
import?java.util.Scanner;
//銀行取款超支異常類，并在程序中使用它
class?WithdrawalException?extends?Throwable
{
	public?WithdrawalException（String?s）
	{
		super（s）;
	}
}
class?Bank
{
	private?double?balance;????????//余額
	Bank（double?b）
	{
		balance=b;
	}
	public?void?deposite（double?dAmount）??//存錢
	{
		if（dAmount>0.0）?balance?+=dAmount;
	}
	public?void?withdrawal（double?dAmount）?//取錢
	{
		try
		{
			if（balance				throw?new?WithdrawalException（“您的余額不足，請查詢后輸入！“）;
			else
				balance=balance-dAmount;
				System.out.println（“取

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????文件????????1206??2020-04-23?16:11??JAVA銀行取款異常處理程序.java