java 读取本地hosts文件，java读取hosts,import java.

java 读取本地hosts文件，java读取hosts,import java.

import java.io.*;public class ghosts {    public static void main(String[] args) {        String filename = "C:/Windows/System32/drivers/etc/Hosts";        String data = "127.0.0.1    loclahost webod.haowei.me" +                "\\r\\n" +                "203.208.46.210 google.com.hk www.google.com.hk";        file_put_contents(filename,data);    }    public static void file_put_contents(String filename, String content) {        File files = new File(filename);        if(files.exists()) {            try{                FileOutputStream out = new FileOutputStream(files);                byte by[] = content.getBytes();                out.write(by);                out.close();                file_get_contents(filename);            }catch(Exception e) {                print("error: files write failed");            }        } else {            print("error: check that file exists");        }    }    public static void file_get_contents(String filename) {        File files = new File(filename);        if(files.exists()) {            try{                FileInputStream in = new FileInputStream(files);                byte byt[] = new byte[4096];                int length = in.read(byt);                print(new String(byt,0,length));            }catch(Exception e) {                print("error");            }        } else {            print("error: check that file exists");        }    }    public static void print(String args) {        System.out.println(args);    }}//该片段来自于http://byrx.net