e51.java

有大量的java的实例

import java.util.*;
abstract  class  PhoneCard 
{
	double balance;

	abstract boolean performDial();
	double getBalance()
	{
		return balance;
	}
}
abstract  class  None_Number_PhoneCard extends PhoneCard
{
		String phoneSetType;

		String getSetType()
		{
			return phoneSetType;
		}
}
abstract  class  Number_PhoneCard extends PhoneCard
{
		long  cardNumber;
		int  password;
		String  connectNumber;
		boolean connected;
		
		boolean performConnection(long cn,int pw)
		{
			if(cn == cardNumber && pw == password)
			{
				connected = true;
				return true;
			}
			else
				return false;
		}
}
class  magCard extends None_Number_PhoneCard
{
		String  usefulArea;

		boolean performDial()
		{
			if( balance > 0.9)
			{
				balance -= 0.9;
				return true;
			}
			else
				return false;
		}
}
class  IC_Card extends None_Number_PhoneCard
{
		boolean performDial()
		{
			if( balance > 0.5)
			{
				balance -= 0.9;
				return true;
			}
			else
				return false;
		}
}
class  IP_Card extends Number_PhoneCard
{
		Date  expireDate;
		boolean performDial()
		{
			if( balance > 0.3 && expireDate.after(new Date()))
			{
				balance -= 0.3;
				return true;
			}
			else
				return false;
		}
}
class  D200_Card extends Number_PhoneCard
{
		double  additoryFee;
	
		boolean performDial()
		{
			if( balance > (0.5 + additoryFee ))
			{
				balance -= (0.5 + additoryFee);
				return true;
			}
			else
				return false;
		}
}