package?student;
import?java.io.BufferedReader;
import?java.io.BufferedWriter;
import?java.io.File;
import?java.io.FileReader;
import?java.io.FileWriter;
import?java.io.IOException;

public?class?Information?{;
		?static?int?increacenum=10;
		?static?String?[]its=new?String[40];
		?Information（）
		?{
			read（）;
		?}
		?public?static?void?read（）
		{
		????????String?pathname?=?“interest.txt“;
				File?file?=?new?File（pathname）;
				?BufferedReader?reader?=?null;??
				?String?[]?temp?=?new?String?[40];
			????????int?line=0;??
			????????try{??
			????????????????reader=new?BufferedReader（new?FileReader（file））;??
			????????????????while（（temp[line]=reader.readLine（））!=null）{??			????????????????	
			????????????????????if（line>=temp.length-1）?{
			????????????????????	temp=increa（temptemp.length）;
			????????????????????}
			????????????????????line++;??
			????????????????	}
			????????????????????setinterest（templine）;
			?????????????????
			???????????????
			????????}??
			????????catch（Exception?e）{??
			????????????e.printStackTrace（）;??
			????????}??
			}
		????public?void?write（String?x）?{
		????	String?pathname?=?“interest.txt“;
		????????try?{
		????????	FileWriter?fw?=?new?FileWriter（pathnametrue）;
		????????????BufferedWriter?bw?=?new?BufferedWriter（fw）;
		????????????bw.write（“\r\n“）;
		????????????bw.write（x）;		????????????
		????????????bw.close（）;
		????????????fw.close（）;
		????????}?catch?（Exception?e）?{
		????????????e.printStackTrace（）;
		????????}
		????	}

				
			
		????public?static??String[]?increa（String[]?aint?num）
			{
				String?[]?b?=?new?String?[num+increacenum];
				its=new?String[num+increacenum];
				System.arraycopy（b0a0num）;
				return?b;
				
			}
			public?static??void?setinterest（String[]?aint?x）
			{
				its=new?String[x];
				for（int?i=0;i					its[i]=a[i];			
			}
			public??String[]?getinterest（）{
				return?its;
				
			}
			public??int?change（?int?n?String?newStr）??{
				String[]?dd=new?String[its.length];
			?????int?k=0;
				??FileWriter?writer?=?null;??
			????????try?{?????
			????????????//?打開一個寫文件器，構造函數中的第二個參數true表示以追加形式寫文件false表示覆蓋的方式寫入
			????????????writer?=?new?FileWriter（“interest.txt“?false）;?
			????????????for（int?i=0;i			????????????{
			????????????	if（i==n）
			????????????	{
			????????????		dd[i]=newStr;
			????????????		k++;
			????????????	}
			????????????	else
			????????????	dd[i]=its[i];
			????????????}
		????????????BufferedWriter?bw?=?new?BufferedWriter（writer）;
		????????????for（int?j=0;j		????????????{
		????????????	if（j==0）
		????????????		bw.write（dd[j]）;
		????????????	else?{
			????????????bw.write（“\r\n“）;
			????????????bw.write（dd[j]）;
		????????????	}
		????????????}
			????????????bw.close（）;
			????????????writer.close（）;????
			????????}?catch?（IOException?e）?{?????
			????????????e.printStackTrace（）;?????
	

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2018-03-21?21:51??student\
?????文件?????????301??2018-03-05?23:23??student\.classpath
?????文件?????????383??2018-03-05?23:23??student\.project
?????目錄???????????0??2018-03-05?23:23??student\.settings\
?????文件?????????598??2018-03-05?23:23??student\.settings\org.eclipse.jdt.core.prefs
?????目錄???????????0??2018-12-23?11:14??student\bin\
?????目錄???????????0??2018-12-23?11:14??student\bin\student\
?????文件????????3127??2018-12-23?11:14??student\bin\student\Information.class
?????文件?????????669??2018-12-23?11:14??student\bin\student\Jiemain$1.class
?????文件?????????673??2018-12-23?11:14??student\bin\student\Jiemain$10.class
?????文件????????1038??2018-12-23?11:14??student\bin\student\Jiemain$11.class
?????文件????????1041??2018-12-23?11:14??student\bin\student\Jiemain$12.class
?????文件????????1040??2018-12-23?11:14??student\bin\student\Jiemain$13.class
?????文件?????????674??2018-12-23?11:14??student\bin\student\Jiemain$14.class
?????文件????????2800??2018-12-23?11:14??student\bin\student\Jiemain$15.class
?????文件?????????672??2018-12-23?11:14??student\bin\student\Jiemain$16.class
?????文件????????1500??2018-12-23?11:14??student\bin\student\Jiemain$17.class
?????文件????????1479??2018-12-23?11:14??student\bin\student\Jiemain$18.class
?????文件????????1502??2018-12-23?11:14??student\bin\student\Jiemain$19.class
?????文件?????????668??2018-12-23?11:14??student\bin\student\Jiemain$2.class
?????文件?????????775??2018-12-23?11:14??student\bin\student\Jiemain$20$1.class
?????文件????????3362??2018-12-23?11:14??student\bin\student\Jiemain$20$2.class
?????文件????????4560??2018-12-23?11:14??student\bin\student\Jiemain$20.class
?????文件????????1279??2018-12-23?11:14??student\bin\student\Jiemain$21.class
?????文件?????????669??2018-12-23?11:14??student\bin\student\Jiemain$3.class
?????文件?????????667??2018-12-23?11:14??student\bin\student\Jiemain$4.class
?????文件?????????670??2018-12-23?11:14??student\bin\student\Jiemain$5.class
?????文件?????????672??2018-12-23?11:14??student\bin\student\Jiemain$6.class
?????文件?????????681??2018-12-23?11:14??student\bin\student\Jiemain$7.class
?????文件?????????679??2018-12-23?11:14??student\bin\student\Jiemain$8.class
?????文件?????????679??2018-12-23?11:14??student\bin\student\Jiemain$9.class
............此處省略16個文件信息