缓存读者按照行读取文件

package ba;

import java.io.*;

public class huanchong {

	public static void main(String[] args) {
		FileInputStream fis=null;
		InputStreamReader reader=null;
		BufferedReader buf=null;
		File f=new File("G:/javakc.txt");
		try {
			fis=new FileInputStream(f);
			reader=new InputStreamReader(fis);
			buf=new BufferedReader(reader);
			String s=null;
			try {
				while((s=buf.readLine())!=null){
					System.out.println(s);
				}
			} catch (IOException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
			
		} catch (FileNotFoundException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}finally{
			if(buf!=null){
				try {
					buf.close();
				} catch (IOException e) {
					// TODO Auto-generated catch block
					e.printStackTrace();
				}
			}
		}

	}

}