- import <a href="http://lib.csdn.net/base/17" class=‘replace_word‘ title="Java EE知识库" target=‘_blank‘ style=‘color:#df3434; font-weight:bold;‘>Java</a>.io.BufferedWriter;
- import java.io.File;
- import java.io.FileOutputStream;
- import java.io.FileWriter;
- import java.io.IOException;
- import java.io.OutputStreamWriter;
- import java.io.RandomAccessFile;
-
- public class AppendFile {
-
- public static void method1(String file, String conent) {
- BufferedWriter out = null;
- try {
- out = new BufferedWriter(new OutputStreamWriter(new FileOutputStream(file, true)));
- out.write(conent);
- } catch (Exception e) {
- e.printStackTrace();
- } finally {
- try {
- if(out != null){
- out.close();
- }
- } catch (IOException e) {
- e.printStackTrace();
- }
- }
- }
-
-
- public static void method2(String fileName, String content) {
- FileWriter writer = null;
- try {
-
- writer = new FileWriter(fileName, true);
- writer.write(content);
- } catch (IOException e) {
- e.printStackTrace();
- } finally {
- try {
- if(writer != null){
- writer.close();
- }
- } catch (IOException e) {
- e.printStackTrace();
- }
- }
- }
-
-
- public static void method3(String fileName, String content) {
- RandomAccessFile randomFile = null;
- try {
-
- randomFile = new RandomAccessFile(fileName, "rw");
-
- long fileLength = randomFile.length();
-
- randomFile.seek(fileLength);
- randomFile.writeBytes(content);
- } catch (IOException e) {
- e.printStackTrace();
- } finally{
- if(randomFile != null){
- try {
- randomFile.close();
- } catch (IOException e) {
- e.printStackTrace();
- }
- }
- }
- }
-
- public static void main(String[] args) {
- try{
- File file = new File("d://text.txt");
- if(file.createNewFile()){
- System.out.println("Create file successed");
- }
- method1("d://text.txt", "123");
- method2("d://text.txt", "123");
- method3("d://text.txt", "123");
- }catch(Exception e){
- System.out.println(e);
- }
- }
- }
Java追加文件内容的三种方法
原文:http://www.cnblogs.com/yiguangchao9999/p/5462846.html