Java通过BufferedWriter追加内容到文件末尾的几种常用方法

Java代码  

 import java.io.BufferedWriter;
 import java.io.FileOutputStream;
 import java.io.FileWriter;
 import java.io.IOException;
 import java.io.OutputStreamWriter;
 import java.io.RandomAccessFile;


 public class WriteStreamAppend {

     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 {
                  out.close();
              } catch (IOException e) {
                  e.printStackTrace();
              }
          }
      }


     public static void method2(String fileName, String content) {
         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
              FileWriter writer = new FileWriter(fileName, true);
              writer.write(content);
              writer.close();
          } catch (IOException e) {
              e.printStackTrace();
          }
      }


     public static void method3(String fileName, String content) {
         try {
             // 打开一个随机访问文件流，按读写方式
              RandomAccessFile 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);
              randomFile.close();
          } catch (IOException e) {
              e.printStackTrace();
          }
      }

     public static void main(String[] args) {
          System.out.println("start");
          method1("c:/test.txt", "追加到文件的末尾");
          System.out.println("end");
      }