java常用文件操作

import java.io.*;/** * Created by archur on 2016/10/17. */public class FileOperate {    // 如果文件不存在会自己创建    public static void writeFile(String fileName,String content,boolean isAppend){        File file = new File(fileName);        BufferedWriter bw = null;        try {            if (!file.exists()) {                file.createNewFile();            }            bw = new BufferedWriter(new FileWriter(fileName,isAppend));            bw.write(content);        } catch (IOException e) {            e.printStackTrace();        } finally{            file = null;            try {                bw.close();            } catch (IOException e) {                e.printStackTrace();            }        }    }    // 读文件以及统计文件行数    public static int readFile(String fileName){        int count = 0;        File file = new File(fileName);        BufferedReader br = null;        try {            br = new BufferedReader(new FileReader(fileName));            String str = null;            while((str = br.readLine())!=null){                System.out.println(str);                count++;            }        } catch (FileNotFoundException e) {            e.printStackTrace();        } catch (IOException e) {            e.printStackTrace();        } finally {            try {                br.close();            } catch (IOException e) {                e.printStackTrace();            }        }        return count;    }}