Java追加文件内容的三种方法

import java.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;

/**
*
* @author malik
* @version 2011-3-10 下午10:49:41
*/
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();
}
}
}

/**
* 追加文件：使用FileWriter
*
* @param fileName
* @param content
*/
public static void method2(String fileName, String content) {
FileWriter writer = null;
try {
// 打开一个写文件器，构造函数中的第二个参数true表示以追加形式写文件
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();
}
}
}

/**
* 追加文件：使用RandomAccessFile
*
* @param fileName 文件名
* @param content 追加的内容
*/
public static void method3(String fileName, String content) {
RandomAccessFile randomFile = null;
try {
// 打开一个随机访问文件流，按读写方式
randomFile = new RandomAccessFile(fileName, "rw");
// 文件长度，字节数
long fileLength = randomFile.length();
// 将写文件指针移到文件尾。
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);
}
}
}