concretestudentmanager.java

自己编的学籍管理系统

package myprojects.studymanager;
import java.util.*;
import java.lang.*;
import java.io.*;

public class ConcreteStudentManager extends AbstractStudentManager 
			implements Serializable{
	List StuManager;

	public ConcreteStudentManager(List Stu)
	{
		StuManager=Stu;
	}
	public boolean addStudent(AbstractStudent student) throws SameStudentIDException
	{
		if(StuManager.contains(student))
		    throw new SameStudentIDException();
		else 
			StuManager.add(student); 
		return true;	
	}
	
    public AbstractStudent removeStudent(String studentID) throws StudentNotFoundException
    {
    	AbstractStudent temp=new GraStudent("temp",0,studentID,"temp",0,0);
    	int index =StuManager.indexOf(temp);
    	if(index==-1)
    	throw new StudentNotFoundException(); 
    	AbstractStudent removeStu=(AbstractStudent)(StuManager.get(index));
    	StuManager.remove(temp);
    	return removeStu;
    }
    	
    public AbstractStudent NamesearchStudent(String name) throws StudentNotFoundException
    {
    	
    	ListIterator it=StuManager.listIterator();
    	while(it.hasNext())
    	{
    		
    		AbstractStudent next=(AbstractStudent)(it.next());
    	//	System.out.println(name+"1");
    	//	System.out.println(next.getS_name()+"1");
    		if(name.equals(next.getS_name()))
    		{
    			return next;
    	 	}
    	}
    	throw new StudentNotFoundException();
  
    }

    public AbstractStudent IDsearchStudent(String studentID) throws StudentNotFoundException
    {
    	AbstractStudent temp=new GraStudent("temp",0,studentID,"temp",0,0);
    	int index =StuManager.indexOf(temp);
    	if(index==-1)
    	throw new StudentNotFoundException();
    	return (AbstractStudent)(StuManager.get(index));
    }
    	
    public void showAllStudentsInfo()
    {	
    	ListIterator it=StuManager.listIterator();
    	while(it.hasNext())
    	{
    		((AbstractStudent)(it.next())).showStudentInfo();
    		System.out.println("\n");
    	}
    }
}