java 读文件,按行读取,将读取的结果放入数组中

import java.io.*;

public class ReadCardType
{
	public static void main(String[] args)throws  IOException
	{
		  BufferedReader in = null ;
			String s = new String();
			String cartTypeCode,cardTypeStr;
			int index = 0 ,pos=0,i=0;
			String[][] cardType ;
			
			in = new BufferedReader(new FileReader("cardtype.cfg"));
			while((s = in.readLine()) != null){
				index++;
			}
			cardType = new String[index][2];
			in.close();
			
			in = new BufferedReader(new FileReader("cardtype.cfg"));
			while((s = in.readLine()) != null)
			{
				pos = s.indexOf('=');
				System.out.println("pos="+pos);
				cartTypeCode = s.substring(0,pos);
				cardTypeStr = s.substring(pos+1);
				System.out.println("cartTypeCode="+cartTypeCode);
				System.out.println("cardTypeStr="+cardTypeStr);
				cardType[i][0] = cartTypeCode ;
				cardType[i][1] = cardTypeStr ;
				i++ ;
			}
			in.close();
			
			for(int j = 0 ;j < index ; j++){
				System.out.println("card type:"+cardType[j][0]+cardType[j][1]);
			}
			
	}		
}