在java中如何使用IO包中的相关的API来进行文件的读写，下面给出具体的代码
代码如下：
package com.multilayerNetwork;import java.io.BufferedReader;import java.io.BufferedWriter;import java.io.File;import java.io.FileInputStream;import java.io.FileOutputStream;import java.io.InputStreamReader;import java.io.OutputStreamWriter;import java.util.ArrayList;import java.util.List;/*** 用来读取文件和保存文件* @author Administrator**/public class FileUtil {// //读取文件public static ArrayList<String> getFile(String filename) {BufferedReader br = null;ArrayList<String> list = new ArrayList<String>();try {br = new BufferedReader(new InputStreamReader(new FileInputStream(new File(filename)), "UTF-8"));String str = br.readLine();while (str != null) {list.add(str);str = br.readLine();}br.close();} catch (Exception e) {e.printStackTrace();}return list;}// 保存文件public static void savefile(List<String> list, String filename) {BufferedWriter bout = null;try {bout = new BufferedWriter(new OutputStreamWriter(new FileOutputStream(filename), "UTF-8"));for (String str : list) {if (str != null && !str.equals("")) {bout.write(str);bout.newLine();}}bout.flush();bout.close();} catch (Exception e) {e.printStackTrace();}}}
