showfeestrans.java

来自「国外的数据结构与算法分析用书」· Java 代码 · 共 30 行

package Transactions;

import Sets.StudentSet;
import Entities.*;

/**	The fee information for a student */
public class ShowFeesTrans
{
	public double totalFees;
	public double totalPaid;

	public void execute(Student user)
	{
		totalFees = user.calculateFees();
		totalPaid = user.totalPaid();
	}
	
	public void executeReg(int studNum)
	{
		Student student = (Student)StudentSet.rep.obtain(new Integer(studNum));
		if (student != null)
			execute(student);
		else
		{
			totalFees = 0;
			totalPaid = 0;
		}
	}
	
} /* end of ShowFeesTrans */