java检测文件内是否包含指定内容

package com.test;

import java.io.BufferedReader;
import java.io.FileInputStream;
import java.io.FileReader;
import java.io.IOException;
import java.io.InputStreamReader;

/**
 * 检测client文件是否包含指定名称
 * @author Wdnncey
 *
 */

public class Baohan {

    public static void main(String[] args) throws Exception {
        readF1("e:\\test.txt");
//        readF2("e:\\test.txt");
    }

    public static final void readF1(String filePath) throws IOException {
        BufferedReader br = new BufferedReader(new InputStreamReader(
                new FileInputStream(filePath)));  

        for (String line = br.readLine(); line != null; line = br.readLine()) {
            System.out.println(line);
        }
        br.close();  

    }  

    public static final void readF2(String filePath) throws IOException {
        FileReader fr = new FileReader(filePath);
        BufferedReader bufferedreader = new BufferedReader(fr);
        String instring;
        while ((instring = bufferedreader.readLine().trim()) != null) {
            if (0 != instring.length()) {
                System.out.println(instring);
            }
        }
        fr.close();
    }  

}