Java read txt file

package com.Yang;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.InputStreamReader;

public class Parser {

    /**
     * @param args
     */
    public static void main(String[] args) {
        // TODO Auto-generated method stub
        String filePath = "bigtable_dns.txt";
//      "res/";
        readTxtFile(filePath);
    }
    public static void readTxtFile(String filePath){
        try {
                String encoding="GBK";
                File file=new File(filePath);
                if(file.isFile() && file.exists()){ //判断文件是否存在
                    InputStreamReader read = new InputStreamReader(
                    new FileInputStream(file),encoding);//考虑到编码格式
                    BufferedReader bufferedReader = new BufferedReader(read);
                    String lineTxt = null;
                    while((lineTxt = bufferedReader.readLine()) != null){
                        
                        System.out.println(lineTxt);
                    }
                    read.close();
        }else{
            System.out.println("找不到指定的文件");
        }
        } catch (Exception e) {
            System.out.println("读取文件内容出错");
            e.printStackTrace();
        }
     
    }

}