course.java

JAVA CLONE 用于CLASS范式的CLONE

package baseClass;
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Collections;


public class Course {
	private String courseId;
	private String courseName;
	private String courseMark;
	public String getCourseId() {
		return courseId;
	}
	public void setCourseId(String courseId) {
		this.courseId = courseId;
	}
	public String getCourseName() {
		return courseName;
	}
	public void setCourseName(String courseName) {
		this.courseName = courseName;
	}
	public String getCourseMark() {
		return courseMark;
	}
	public void setCourseMark(String courseMark) {
		this.courseMark = courseMark;
	}
	public Course()
	{
		
	}
	public Course(String pcid,String pcname,String pcmark)
	{
		courseId=pcid;
		courseName=pcname;
		courseMark=pcmark;
	}
	public ArrayList loadAllCourse()
	{
		ArrayList alldate=new ArrayList();
		try
		{
			String[] classmessage=new String[2];
			File read = new File(GlobalValue.COURSEDATESOURSE);//第一行表示有多少条数据，后面行表示实际数据
		    if(!read.exists())   
		    	read.createNewFile();
			BufferedReader br = new BufferedReader(
					new FileReader(read));
			String temp = null;
			temp = br.readLine();
			int i=0,j=0;
			if(temp != null)//读取数据条数
			{

					j=Integer.parseInt(temp);
					temp = br.readLine();
			}			
			while(temp != null)//读取数据
			{
				classmessage=temp.split(GlobalValue.SPLITCHAR);
				Course tempstudent=new Course();
				tempstudent.courseId=classmessage[0];
				tempstudent.courseName=classmessage[1];
				tempstudent.courseMark=classmessage[2];
				alldate.add(tempstudent);
				temp = br.readLine();
			}

			br.close();
			alldate.trimToSize();
			//showMessage(alldate);
			return alldate;
		}
		catch(FileNotFoundException e){ //文件未找到
			System.out.println (e);
		}catch(IOException e){
			System.out.println (e);
		}
		catch(Exception e){
			System.out.println (e);
		}
		return null;
	}
	public int addnewcourse(Course newclass)
	{
		//1为可添加 0为数据为空可添加 2为数据已有 3为新添加成功
		ArrayList allcourse=loadAllCourse();
		for(int i=0;i<allcourse.size();i++)
		{
			if(newclass.equals((Class)allcourse.get(i)))
			{
				return 2;
			}
		}
		allcourse.add(newclass);
		allcourse.trimToSize();
		Couresecomparator classco=new Couresecomparator();
		
		Collections.sort(allcourse,classco);  
		saveAllStudent(allcourse);
		return 3;
	}
	public boolean equals(Course newclass)
	{
		//if(courseId==newclass.courseId&&courseName==newclass.courseName&&newclass.courseMark==courseMark)
		if(courseId==newclass.courseId)
		{
			return true;
		}
		else
		{
			return false;
		}
	}
	public void saveAllStudent(ArrayList allclass)
	{
		try
		{
			File write = new File(GlobalValue.COURSEDATESOURSE);
		    if(!write.exists())   
		    	write
		    	.createNewFile();
			BufferedWriter bw = new BufferedWriter(
					new FileWriter(write,false));
			int i=0;
			if(allclass!=null)//写入数据行数
			{
				bw.write(allclass.size()+"\n");	
				for(int j=0;j<allclass.size();j++)//读取数据
				{
					Course tempstudent=(Course)allclass.get(i);
					String temp=tempstudent.courseId+"GlobalValue.SPLITCHAR"+tempstudent.courseName+"GlobalValue.SPLITCHAR"+tempstudent.courseMark+"\n";
					bw.write(temp);
				}
			}
			else
			{
				bw.write(0+"\n");	
			}
			bw.close();

		}
		catch(FileNotFoundException e){ //文件未找到
			System.out.println (e);
		}catch(IOException e){
			System.out.println (e);
		}
		catch(Exception e){
			System.out.println (e);
		}
	}
	public void showMessage(ArrayList classArray)
	{
		if(classArray!=null)
		{
			for(int i=0;i<classArray.size();i++)
			{
				System.out.println("课程编号："+((Course)classArray.get(i)).courseId+"  课程名称:"+((Course)classArray.get(i)).courseName+" 课程学分："+((Course)classArray.get(i)).courseMark);
			}
		}
		else
		{
			System.out.println("没有数据！");
		}
	}
	public static void main(String[] arg)
	{
		Course temp=new Course();
		ArrayList message=temp.loadAllCourse();
		//temp.saveAllStudent(message);
	}
}