test.java

有大量的java的实例

public class test
{
public static void main(String args[])
{
	D200_Card my200 = new D200_Card(12345);
	System.out.println(my200.toString());
}
}
abstract class PhoneCard
{
	double balance;

	abstract boolean performDial();
	double getBalance()
	{
		return balance;
	}
}
abstract class Number_PhoneCard extends PhoneCard
{
	long  cardNumber;
	int  password;
	String  connectNumber;
	boolean connected;
    String test;

	Number_PhoneCard()
	{
	   test="hello!";
	}
	Number_PhoneCard(long cn)
	{
		//this();
		cardNumber = cn;
	}
	Number_PhoneCard(long cn,int pw)
	{
		this(cn);
		password = pw;
	}
	Number_PhoneCard(long cn,int pw,double b)
	{
		this(cn,pw);
		balance = b;
	}
	Number_PhoneCard(long cn,int pw,double b,String c)
	{
		this(cn,pw,b);
		connectNumber = c;
	}
		boolean performConnection(long cn,int pw)
	{
		if(cn == cardNumber && pw == password)
		{
			connected = true;
			return true;
		}
		else
			return false;
	}
}
class  D200_Card extends Number_PhoneCard
{
	double  additoryFee;
    D200_Card()
    {}
	D200_Card(long cn)
    {
	    super(cn);
	    //cardNumber=cn;
    }
	D200_Card(long cn,int pw,double a)
	{
		super(cn,pw);
		additoryFee = a;
	}
	D200_Card(long cn,int pw,double b,double a)
	{
		super(cn,pw,b);
		additoryFee = a;
	}
	D200_Card(long cn,int pw,double b,String c,double a)
	{
		super(cn,pw,b,c);
		additoryFee = a;
	}
	boolean performDial()
	{
		if(!connected)
			return false;
		if( balance > (0.5 + additoryFee ))
		{
			balance -= (0.5 + additoryFee);
			return true;
		}
		else
			return false;
	}
	boolean performDial(long cn,int pass)
	{
		if(performConnection(cn,pass))
			return performDial();
		else
			return false;
	}
	double getBalance()
	{
		if(connected)
			return balance;
		else
			return -1;
	}
	public String toString()
	{
		return("电话卡接入号码："+connectNumber
			+"\n电话卡卡号："+cardNumber
			+"\n电话卡密码："+password
			+"\n卡中的金额："+balance
			+"\n通话附加费："+additoryFee
			+"\n问候："+test);
}
}